Terms and Conditions

Last updated:

Terms of Use

Effective Date: 26 March 2026 Last Revised: 26 March 2026

Article 1 (Purpose)

The purpose of these Terms is to set out the rights, obligations, and responsibilities between Ridio Company (a UK corporation, hereinafter the "Company") and Members in relation to the use of the Marejo mobile application (hereinafter the "App" or "Service") and related services provided by the Company, as well as other necessary matters.

Article 2 (Definitions)

The terms used in these Terms are defined as follows.

  1. "Service" means all voice-based personal assistant services provided by the Company through the Marejo app, including features such as voice diary, voice calendar, reminders, to-do management, AI chat, voice transcription, text-to-speech (TTS), AI image generation, web search, and photo attachments.

  2. "Member" means a person who agrees to these Terms, completes registration, and uses the Service.

  3. "Content" means all information created, entered, or stored by a Member in the course of using the Service, including diaries, calendar events, reminders, to-dos, chat messages, and photos.

  4. "AI Assistant" means an AI-based feature within the Service that provides conversational support to Members, and is referred to by the name designated by the Member (default: "Marejo").

  5. "Credits" means virtual usage units granted to Members to manage usage volume of certain features such as AI chat and text-to-speech (TTS).

  6. "Voice Transcription" means the feature that converts a Member’s speech into text.

  7. "Text-to-Speech (TTS)" means the feature that converts the AI Assistant’s text responses into spoken audio for playback.

Article 3 (Posting and Amendment of Terms)

  1. The Company shall post these Terms on the in-app settings screen or on the Company website so that Members can easily review them.

  2. The Company may amend these Terms to the extent that such amendments do not violate applicable laws and regulations.

  3. If the Company amends these Terms, it shall specify the effective date and reason for amendment and provide notice, together with the current Terms, through in-app notices, push notifications, or similar methods from at least 7 days before the effective date. However, where changes are unfavourable to Members, notice shall be provided from at least 30 days before the effective date.

  4. If the Company gives notice under the preceding paragraph and clearly informs Members that "failure to express refusal by the effective date of the revised Terms will be deemed consent," and a Member does not expressly indicate refusal, that Member shall be deemed to have agreed to the revised Terms.

  5. If a Member does not agree to the revised Terms, either the Company or the Member may terminate the service agreement.

Article 4 (Provision of Service)

  1. The Company provides the following services.

Voice Diary: Converts the Member’s speech into text (raw transcript) and stores both the raw transcript and an AI-polished version. Includes emotion classification and photo attachment features.

Voice Calendar: Provides event creation, editing, and deletion via voice or text input. AI may automatically detect future schedules in conversation and register them in the calendar.

Reminders: Delivers reminder messages via push notifications at times specified by the Member.

To-Do Management: Provides task creation, editing, completion, and deletion based on priority and due date.

AI Chat: Provides Q&A, information support, and everyday conversation through a conversational AI assistant.

Voice Transcription: Uses the OpenAI Whisper API to convert Korean and English speech into text.

Text-to-Speech (TTS): Uses ElevenLabs to convert the AI Assistant’s text responses into spoken audio.

AI Image Generation: Uses Google Gemini to generate images upon Member request (limited to 5 times per day).

Web Search: Uses Tavily to search real-time web information and reflect it in the AI Assistant’s responses.

Photo Attachments: Allows photos to be attached to content such as diaries and stored in cloud storage.

  1. In principle, the Service is provided 24 hours a day, 365 days a year. However, the Company may temporarily suspend all or part of the Service when necessary, such as for system maintenance.

  2. The Service is provided through iOS and Android mobile platforms.

Article 5 (Changes to and Suspension of Service)

  1. The Company may change all or part of the Service as required for operational or technical reasons, and shall provide prior notice to Members through in-app notices, push notifications, or similar methods before such changes.

  2. The Company may restrict or temporarily suspend all or part of the Service in any of the following cases.

    • Where necessary for facility maintenance such as regular system inspections, expansion, or replacement

    • Where normal service provision is impossible due to power outages, equipment failures, or surges in service traffic

    • Where third-party service providers (e.g. Google, OpenAI, ElevenLabs, Tavily) experience service failures or policy changes

    • Where force majeure events occur, such as natural disasters, national emergencies, war, or civil disturbances

    • Where service suspension is otherwise necessary based on the Company’s reasonable judgement

  3. If the Company suspends the Service, it shall notify Members in advance through in-app notices, push notifications, or similar methods. However, where prior notice is impossible due to force majeure, notice may be given afterwards.

  4. The Company shall not be liable for damages incurred by Members due to changes to or suspension of the Service, unless caused by the Company’s wilful misconduct or gross negligence.

Article 6 (Registration)

  1. A person wishing to use the Service shall apply for membership after agreeing to these Terms, and registration is completed when the Company accepts such application.

  2. Registration may be completed by any of the following methods.

    • Google Sign-In: Simple sign-up using a Google account

    • Email/Password: Sign-up by directly setting an email address and password

  3. Children under the age of 14 may not register. If the Company becomes aware that a child under 14 has attempted registration, it may immediately delete the account.

  4. The Company may refuse registration or terminate the service agreement after registration in any of the following cases.

    • Where a person registers by misappropriating another person’s information

    • Where mandatory information is falsely entered at registration

    • Where a person who previously lost membership due to violation of these Terms attempts to re-register

    • Where accepting registration is deemed to significantly hinder the Company’s technology or business operations

  5. After registration is complete, Members may set the AI Assistant’s name and how the Assistant addresses them during onboarding.

Article 7 (Withdrawal and Loss of Membership)

  1. Members may request withdrawal (account deletion) at any time via the in-app settings screen, and the Company shall process this immediately.

  2. Upon withdrawal, the following data will be deleted in sequence.

    • Diaries (including raw transcripts, AI-polished versions, emotions, and photos)

    • Calendar events

    • Reminders

    • To-do lists

    • AI chat history

    • Attached photos and cloud storage files

    • User preferences (AI Assistant name, forms of address, notification settings, etc.)

    • Remaining credit balance

  3. Deleted data cannot be restored. Members must back up any necessary data themselves before withdrawal.

  4. The Company may suspend or revoke membership status after prior notice if a Member engages in any of the following acts. However, in urgent circumstances, immediate action may be taken without prior notice, in which case notice will be provided afterwards.

    • Where false information was registered at sign-up

    • Where another person’s use of the Service is interfered with, or another person’s information is misappropriated

    • Where the Service is used for acts prohibited by laws or these Terms

    • Where operation of the Service is intentionally obstructed

    • Where Article 9 (Member Obligations) of these Terms is violated

  5. If membership status is revoked, data in the relevant account shall be deleted within the scope permitted by applicable laws and regulations.

Article 8 (Notices to Members)

  1. Where the Company gives notice to Members, it may do so by the email address registered by the Member, in-app notices, push notifications, or similar methods.

  2. For notices to an unspecified number of Members, the Company may substitute individual notice by posting the notice in-app.

  3. Members must keep the contact information registered with the Company up to date, and the Company is not liable for disadvantages caused by failure to update such information.

Article 9 (Member Obligations)

  1. Members must not engage in any of the following acts.

    • Misappropriating or unlawfully using another person’s personal information

    • Using the Company’s Service to create, store, or distribute illegal content

    • Using the AI Assistant to induce generation of illegal or harmful content

    • Accessing the Service or generating bulk requests using automated means (bots, scripts, crawlers, etc.)

    • Interfering with stable operation of the Service or imposing excessive load on systems

    • Impersonating another person, or impersonating the Company’s officers, employees, or affiliates

    • Harassing, threatening, or defaming others through the Service

    • Using the Service for commercial purposes without prior approval from the Company

    • Exploiting vulnerabilities in the Service or accessing the Service by unauthorised means

    • Uploading or generating via AI content that infringes a third party’s intellectual property rights

    • Any other act that violates applicable laws or offends public morals or social order

  2. Members must comply with these Terms, applicable laws and regulations, the Company’s posted usage policies, and notices relating to the Service.

  3. Members must securely manage their own account information (passwords, authentication means, etc.) and must not transfer or share it with others. The Company is not liable for damages caused by negligent account management.

Article 10 (Special Provisions for AI Services)

  1. Accuracy of AI Responses: Responses from the AI Assistant are automatically generated by AI models (such as Google Gemini 3 Flash) and are not guaranteed for accuracy, completeness, or timeliness. AI Assistant responses must be used for reference only, and important matters must always be verified through separate checks.

  2. Not Professional Advice: AI Assistant responses do not constitute professional advice in areas such as medical, legal, financial, tax, or psychological counselling. If professional advice is required, please consult a qualified professional in the relevant field.

  3. Automated Processing: Depending on conversational context, the AI Assistant may automatically perform the following tasks.

    • Recognising schedules from conversation and automatically registering them in the calendar

    • Automatically polishing voice diary content to create an organised version

    • Automatically classifying emotions

    • Recognising to-do items from conversation and creating them automatically

    • Automatically setting reminders

  4. Rights to Edit and Delete: Members may edit or delete content automatically created by the AI Assistant (such as events, diary entries, and to-dos) at any time.

  5. Characteristics of AI Models: As the AI Assistant is based on probabilistic language models, it may generate different responses to the same question each time and may produce factually incorrect information (so-called "hallucinations"). The Company is not liable for errors arising from these inherent characteristics of AI.

  6. AI Image Generation: The AI image generation feature is limited to 5 times per day, and generated images are automatically created by AI models, with no guarantee as to quality or suitability. Attempts to generate illegal or harmful images are prohibited.

  7. Web Search: Web search results provided by the AI Assistant are collected through a third-party service (Tavily), and their accuracy or currency is not guaranteed.

Article 11 (Voice Recording and Transcription)

  1. To use the Service’s voice input feature, consent is required for microphone access on the Member’s device. Microphone access consent may be withdrawn at any time in device settings, in which case voice input features cannot be used.

  2. Members’ voice data is converted into text via the OpenAI Whisper API. Voice data is transmitted to a third party (OpenAI) solely for transcription processing purposes, and once transcription is complete, the Company does not separately store the original voice files on its servers.

  3. The converted text (raw transcript) is stored on the server as Member content, and Members may view, edit, or delete it at any time.

  4. The text-to-speech (TTS) feature is provided through ElevenLabs and converts the AI Assistant’s text responses into spoken audio. The Member’s own voice is not used in this process.

  5. The quality of voice transcription and text-to-speech features may vary depending on network conditions, background noise, speech characteristics, and other factors, and the Company does not guarantee perfect transcription or synthesis quality.

Article 12 (Credits and Usage Limits)

  1. The Company operates a credit system to manage usage volume of certain features, such as AI chat and text-to-speech (TTS).

  2. Members are granted base credits (100 credits) upon sign-up, and credits are deducted when using AI chat and TTS.

  3. Where credits are exhausted, use of the relevant features may be restricted.

  4. The Company may change credit allocation amounts, deduction criteria, top-up methods, and related matters, and will provide advance notice of such changes.

  5. The AI image generation feature is separately limited to 5 uses per day, independent of credits.

  6. For stable operation of the Service, the Company may apply rate limits, including limits on API call frequency.

  7. Credits are not convertible into cash or other monetary value, are non-refundable, and may not be transferred between Members. Any remaining credits expire upon withdrawal.

Article 13 (Subscriptions and In-App Purchases)

  1. Types of Subscription Products: The Company offers the following auto-renewing subscription products (hereinafter "Subscriptions").

Marejo Premium Monthly Subscription period: 1 month Price: £2.00/month Free trial: 14-day free trial

Marejo Premium Yearly Subscription period: 1 year Price: £20.00/year Free trial: 14-day free trial

Both subscription plans provide the same premium features, and the yearly subscription includes a discount equivalent to approximately two months. The price displayed to Members may be automatically adjusted to the Member’s region and currency in accordance with Apple App Store or Google Play Store policies, and the price shown in-app at the time of purchase shall apply as the final charge amount.

  1. Free Trial: Each subscription includes a 14-day free trial period. Premium features may be used free of charge during the free trial period, and unless the subscription is cancelled before the free trial ends, it will automatically convert to a paid subscription and the applicable subscription fee will be charged. If a subscription product is purchased, any unused portion of the free trial period is forfeited.

  2. Payments and Billing:

Payment is charged to the Apple ID account (for iOS) or Google account (for Android) upon purchase confirmation or when the free trial period ends.

Subscriptions automatically renew unless auto-renewal is cancelled at least 24 hours before the end of the current subscription period.

Renewal payment is charged within 24 hours before the end of the current subscription period at the subscription fee in effect at that time.

Subscription fees may change. In the event of a change, the Company will provide prior notice and, where required by applicable law, obtain Member consent, then apply the revised fee from the next renewal.

  1. Subscription Management and Cancellation: Members may manage subscriptions or cancel auto-renewal using the following methods.

iOS: Settings > [User Name] > Subscriptions > Select Marejo > Cancel Subscription Android: Google Play > Profile Icon > Payments and subscriptions > Subscriptions > Select Marejo > Cancel subscription

Cancellation takes effect after the current billing period ends. Premium features remain available until the end of the period already paid for. Unused portions of the current subscription period are non-refundable, except where provided under applicable law or Apple’s or Google’s refund policies.

  1. Refunds: Refund requests are handled according to Apple’s policies (for App Store purchases) or Google’s policies (for Google Play purchases). The Company does not process refunds directly. To request a refund, please contact Apple Support or Google Play Support as indicated on your purchase receipt.

  2. Subscription Entitlement: Members with a valid Marejo Premium subscription (monthly or yearly) may use all premium features of the app while the subscription remains active. If a subscription expires or is cancelled, access to premium features is restricted; however, previously stored data (such as diaries, calendar events, and reminders) is retained and can still be viewed.

Article 14 (Rights to Content)

  1. Ownership of Member Content: Rights to content created or entered by Members through the Service (including diaries, calendar events, reminders, to-dos, chat messages, and attached photos) belong to the relevant Member.

  2. Licence for Service Provision: For content generated when using the Service, Members grant the Company a non-exclusive, royalty-free licence to store, process, and transmit such content to the extent necessary to provide, operate, and improve the Service. This licence terminates when the Member withdraws from the Service or deletes the relevant content.

  3. AI-Generated Content: Responses generated by the AI Assistant, polished diary content, emotion classifications, AI images, and similar outputs may be freely used by Members for personal purposes to the extent permitted by applicable laws and regulations. However, ownership of intellectual property rights in AI-generated content is governed by applicable laws and regulations.

  4. Company Intellectual Property: Intellectual property rights relating to the Service itself—such as app design, logos, brand, software, technology, AI models, system prompts, and database structure—belong to the Company.

  5. Members may not reproduce, reverse engineer, decompile, disassemble, or create derivative works from all or any part of the Service without the Company’s prior written consent.

Article 15 (Personal Data Protection)

  1. To protect Members’ personal data, the Company establishes and discloses a privacy policy in accordance with applicable laws and regulations.

  2. Matters regarding the collection, use, provision, retention, and destruction of Members’ personal data are governed by the Company’s Privacy Policy (marejo.app/ko/legal/privacy-policy).

  3. In accordance with applicable laws and regulations and the Privacy Policy, the Company takes reasonable technical, administrative, and physical measures to protect Members’ personal data.

  4. For details on exercising rights related to personal data (including access, correction, deletion, and suspension of processing), please refer to the Privacy Policy.

Article 16 (Third-Party Services)

  1. The Service operates in reliance on the following third-party services.

    • Google (Gemini): AI chat response generation and AI image generation

    • OpenAI (Whisper): Voice transcription (speech-to-text)

    • ElevenLabs: Text-to-speech (TTS, text-to-voice conversion)

    • Tavily: Web search

    • Vercel: AI Gateway and hosting

    • Google: Social login, app distribution (Google Play)

    • Apple: App distribution (App Store)

    • Amazon Web Services (S3-compatible): Cloud storage for photos and files

    • Expo: Push notification delivery

  2. Some features of the Service may be restricted or unavailable due to failures, interruptions, policy changes, or termination of third-party services, and the Company will endeavour to provide alternatives within a reasonable scope.

  3. If a Member signs in via an account of a third-party service, that third party’s terms of use and privacy policy shall additionally apply.

  4. The Company does not guarantee the quality, accuracy, or availability of third-party services and shall not be liable for damages caused by third-party services unless caused by the Company’s wilful misconduct or gross negligence.

Article 17 (Disclaimers)

  1. Provided As Is: The Service is provided on an "AS-IS" and "AS-AVAILABLE" basis. The Company makes no warranties, express or implied, regarding the Service’s completeness, accuracy, reliability, suitability, or availability.

  2. AI-Related Disclaimer: The Company does not guarantee the accuracy, suitability, or legality of AI Assistant responses and is not liable for outcomes resulting from Members’ decisions or actions based on such responses.

  3. Data Loss: The Company strives to protect Member data through reasonable technical measures, but is not liable for data loss caused by system failures, hacking, natural disasters, or similar events unless caused by the Company’s wilful misconduct or gross negligence.

  4. Free Services: For services or features provided free of charge, the Company bears no separate liability except to the extent required by applicable laws and regulations.

  5. Disputes Between Members: The Company has no obligation to intervene in disputes arising between Members or between a Member and a third party through the Service and is not liable for resulting damages.

  6. The disclaimers in the preceding paragraph apply to the maximum extent permitted by applicable laws and regulations and are effective only insofar as they are not restricted by mandatory law.

Article 18 (Compensation for Damages)

  1. If the Company causes damage to a Member through wilful misconduct or gross negligence, the Company is liable to compensate for such damage.

  2. Unless otherwise provided by applicable laws and regulations, the Company’s liability for damages is limited to direct and ordinary damages incurred by Members.

  3. If a Member causes damage to the Company by violating these Terms, that Member shall compensate the Company for the resulting damage.

  4. If a third party files a lawsuit, claim, or similar action against the Company because a Member violated these Terms or applicable laws, that Member shall indemnify and hold the Company harmless at the Member’s own cost and responsibility, and shall compensate the Company for resulting damages (including legal fees and litigation costs).

Article 19 (Dispute Resolution)

  1. These Terms are governed by the laws of the United Kingdom, and disputes related to these Terms shall be interpreted in accordance with UK law.

  2. Notwithstanding the preceding paragraph, for Members residing in the Republic of Korea, mandatory Korean consumer protection laws—including the Framework Act on Consumers and the Act on the Consumer Protection in Electronic Commerce, etc.—shall apply, and actions may be filed with Korean courts.

  3. If a dispute arises between the Company and a Member in relation to use of the Service, both parties shall consult in good faith to resolve the dispute.

  4. If no resolution is reached through consultation under the preceding paragraph, both parties may apply for mediation through the Korea Internet & Security Agency (KISA) Personal Information Dispute Mediation Committee, the Korea Consumer Agency Consumer Dispute Mediation Committee, or other relevant dispute mediation bodies.

  5. If the dispute is not resolved through the above methods, either party may bring an action before the court having jurisdiction over the location of the Company’s head office or the court having jurisdiction under the Civil Procedure Act of the Republic of Korea.

Article 20 (Miscellaneous)

  1. Severability: If any specific provision of these Terms is determined to be invalid or unenforceable under applicable laws and regulations, only that provision shall be deemed invalid, and the remaining provisions shall remain in full force and effect.

  2. Entire Agreement: These Terms constitute the entire agreement between the Company and Members regarding use of the Service, and matters not specified herein shall be governed by applicable laws and regulations or established commercial practice.

  3. No Waiver: Failure by the Company to exercise any right under these Terms immediately shall not be deemed a waiver of such right.

  4. No Assignment: Members may not assign or transfer their rights or obligations under these Terms to a third party without the Company’s prior written consent.

  5. Contact: Enquiries, complaints, and claims for redress relating to use of the Service may be submitted via the contact details below.

Company Name: Ridio Company Representative: Sang Jin Lee Address: 71-75 Shelton Street, Covent Garden, London, United Kingdom, WC2H 9JQ Email: hello@ridiocompany.com Telephone: +44 020 4524 7944

Supplementary Provisions

  1. These Terms take effect on 26 March 2026.

  2. These Terms also apply to Members who registered before the effective date of these Terms.