Legal

Terms of Service

Last updated: April 11, 2026

These Terms of Service ("Terms") govern your use of the Skill Decay Tracker application ("App") developed by Pavel Kulitski ("we", "our", "us"). By downloading, installing, or using the App, you agree to be bound by these Terms.

1. Description of Service

Skill Decay Tracker is an AI-powered learning retention app that helps you track skill health using spaced repetition and the Ebbinghaus forgetting curve. The App generates personalised micro-challenges, visualises skill decay, and schedules review sessions to help maintain your knowledge portfolio.

2. Account and Data

The App does not require account creation. All skill data, practice history, and settings are stored locally on your device. No user accounts are created or maintained on our servers. Your display name and preferences are stored on-device only.

3. Subscriptions and Payments

4. Refunds

All purchases are processed by Apple through the App Store. Refund requests must be submitted directly to Apple in accordance with their refund policy. We do not process refunds independently.

5. AI-Generated Content

The App uses artificial intelligence (Claude, GPT-4o, Gemini) to generate practice challenges and evaluate answers. Please note:

6. API Keys

If you choose to use your own AI provider API key (Claude, OpenAI, or Gemini), you are responsible for:

Your API keys are stored securely in your device's Keychain and are never transmitted to our servers.

7. Acceptable Use

You agree not to:

8. Intellectual Property

The App, including its design, code, algorithms, and brand assets, is owned by Pavel Kulitski and protected by applicable intellectual property laws. Your subscription grants you a personal, non-transferable licence to use the App. AI-generated challenge content is provided for your personal educational use.

9. Limitation of Liability

To the maximum extent permitted by applicable law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or relating to your use of the App. This includes, but is not limited to, damages from reliance on AI-generated content, data loss due to device failure, or interruptions to AI service availability.

10. Disclaimer of Warranties

The App is provided "as is" and "as available" without warranties of any kind, either express or implied. We do not warrant that the App will be uninterrupted, error-free, or that AI-generated content will be accurate or suitable for any specific purpose.

11. Changes to These Terms

We reserve the right to update these Terms at any time. Changes will be posted on this page with an updated revision date. Continued use of the App after changes constitutes acceptance of the updated Terms. Material changes will be communicated through the App where practicable.

12. Governing Law

These Terms shall be governed by and construed in accordance with the laws applicable to your jurisdiction, without regard to conflict of law principles.

13. Contact

Questions about these terms?

Reach out at pavel.kulitski@icloud.com — we aim to respond within 24 hours.