Terms of Service
Last Updated: February 23, 2026
Please read these Terms of Service carefully before using Daivry. By registering or using the App, you agree to be bound by these Terms.
1. Service Description
1.1 App Overview
Daivry is a smart diary application that provides:
- Diary Recording: Multi-format input including text, photos, voice, and video
- Online AI (Pro): Cloud AI for in-depth summaries, smart Q&A, and advanced features
- Cloud Sync (Pro): End-to-end encrypted cross-device data synchronization
1.2 Service Availability
- Local features work offline without network connectivity
- Online features require a network connection and an active Pro subscription
- We will make reasonable efforts to ensure online service availability but do not guarantee uninterrupted or error-free service
2. Accounts
2.1 Registration
- An account is required to use online features
- You may register via email or Sign in with Apple
- You must provide truthful and accurate registration information
- You are responsible for maintaining account security, including safeguarding your password
2.2 Account Security
- You must not transfer or share your account with others
- If you discover unauthorized use of your account, contact us immediately
- We are not liable for losses resulting from your failure to safeguard account information
2.3 Account Deletion
- You may delete your account at any time in the App settings
- Upon deletion, all server-side data will be permanently removed
- Local diary data on your device will not be affected
3. Subscriptions and Payments
3.1 Free Features
The following features are permanently free:
- Unlimited diary entries
- Multiple notebook management
- Data import and export
- Full-text search
3.2 Pro Subscription
- Pro subscriptions are offered through Apple App Store in-app purchases
- Plans: Monthly ($1.99/month) or Yearly ($14.99/year)
- Subscriptions auto-renew through your Apple account within 24 hours before expiration
- You can manage or cancel subscriptions at any time in your Apple device's Settings > Apple ID > Subscriptions
- After cancellation, Pro features will remain available until the end of the current billing period
- Refund policies follow Apple App Store guidelines
3.3 AI Credits
- Pro subscriptions include a monthly AI credit allowance
- Different AI features consume different amounts of credits
- Unused credits do not carry over to the next month
- When credits are exhausted, AI features will be unavailable for the remainder of the month
4. User Content
4.1 Ownership
- All diary content you create (text, photos, voice, etc.) belongs to you
- We do not claim any intellectual property rights over your content
- You retain all rights to your content
4.2 Content Responsibility
- You are solely responsible for content you create and store
- You must not use the App to store content that violates applicable laws
- We do not proactively review your local content
4.3 AI-Generated Content
- AI-generated summaries, tags, descriptions, and other content are for reference only
- AI-generated content may not be entirely accurate; you should assess its suitability yourself
- We are not responsible for the accuracy or completeness of AI-generated content
5. Data and Privacy
5.1 Data Storage
- Local data is stored in your device's app sandbox
- Cloud sync data is stored after end-to-end encryption
- For detailed data handling practices, please refer to our Privacy Policy
5.2 Data Retention
- Cloud sync files are retained while your account is active, until you delete the files, disable sync, or delete your account
- Deleted local diary entries are moved to trash and permanently deleted after 30 days
- Temporary AI processing data is automatically deleted after 24 hours
- Accounts inactive for over 365 days will receive an email reminder; if still inactive 30 days after the reminder, account data will be deleted
5.3 Data Backup
- We recommend regularly backing up important data using the export feature
- We are not responsible for local data loss due to device failure, system updates, or other causes
- Enabling cloud sync provides additional backup protection
5.4 Encryption Keys
When end-to-end encryption is enabled, your encryption key is derived from your password. Please remember your password — if lost without recovery codes, encrypted cloud data cannot be recovered. We cannot help recover encryption keys or decrypt your data.
6. Acceptable Use
6.1 Permitted Use
- Personal diary recording and life review
- Reasonable use of AI features
6.2 Prohibited Conduct
- Attempting to reverse engineer, decompile, or crack the App
- Abusing AI services (e.g., large-scale automated requests)
- Interfering with or attempting to disrupt our servers or networks
- Using the App for any illegal activities
- Renting, selling, or transferring your account to third parties
- Circumventing or attempting to circumvent usage limits or security measures
7. Intellectual Property
7.1 App Intellectual Property
- The design, code, interface, trademarks, and other intellectual property of the App belong to us
- Without our written permission, you may not copy, modify, or distribute any part of the App
7.2 Open Source Components
- The App uses certain open-source software components
- These components are governed by their respective open-source licenses
8. Disclaimers
8.1 "As Is" Service
- The App is provided on an "as is" and "as available" basis
- We do not guarantee uninterrupted, secure, or error-free operation
- We make no express or implied warranties regarding suitability, reliability, or accuracy
8.2 Limitation of Liability
- To the maximum extent permitted by law, we are not liable for any indirect, incidental, special, or consequential damages arising from the use or inability to use the App
- Our total liability shall not exceed the fees you paid to us in the past 12 months
8.3 AI Feature Disclaimer
- AI feature outputs are for reference only and do not constitute professional advice
- AI may produce inaccurate, incomplete, or biased content
- You should not rely solely on AI-generated content for important decisions
9. Changes to Terms
- We may modify these Terms from time to time
- Significant changes will be communicated through in-app notifications or other appropriate means in advance
- Continued use of the App after changes take effect constitutes acceptance of the modified Terms
- If you disagree with the changes, please stop using the App
10. Termination
10.1 User Termination
- You may stop using the App at any time
- You may delete your account at any time
10.2 Our Termination
- If you violate these Terms, we reserve the right to suspend or terminate your account
- We will make reasonable efforts to notify you before termination (except in emergencies)
10.3 Effects of Termination
- Upon termination, your right to use online services ceases immediately
- Your local data is not affected, and you may continue using the App in offline mode
11. Contact Us
If you have any questions about these Terms, please contact us:
- Email: support@91ai.app