End User License Agreement (EULA)
CHinUP — End User License Agreement
1. Parties
This Agreement is between Boris Volkov ("Developer") and you ("User"). It governs your use of the CHinUP application ("App").
2. License Grant
The Developer grants you a revocable, non-exclusive, non-transferable, limited license to download, install, and use the App for your personal, non-commercial purposes strictly in accordance with this Agreement.
3. Restrictions
You agree not to:
- (a) Decompile, reverse engineer, disassemble, or attempt to derive the source code or underlying algorithms of the App;
- (b) Modify, translate, or create derivative works of the App;
- (c) Exploit the App for any commercial purpose.
4. Termination
This license is effective until terminated by you or the Developer. Your rights will terminate automatically without notice if you fail to comply with any term of this Agreement.
5. Governing Law
This Agreement is governed by the laws of the Republic of Kazakhstan.
Terms of Service
1. Acceptance
By using CHinUP, you agree to these Terms. If you do not agree, do not use the App.
2. Subscriptions & Billing
- Plans: CHinUP offers Monthly, Quarterly, and Yearly auto-renewing subscriptions.
- Free Trial: We may offer a 1-week free trial. If not cancelled at least 24 hours before it ends, you will be charged.
- Payment: Charged to your Apple ID upon confirmation of purchase.
- Management: Manage subscriptions in Account Settings.
- Refunds: All refund requests are handled by Apple per their policies.
3. User Conduct
You agree to use CHinUP only for lawful purposes, in a safe environment, ensuring adequate space for physical movement.
4. Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, BORIS VOLKOV SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, DATA LOSS, OR PHYSICAL INJURY ARISING FROM USE OF THE APP.
5. Contact
Email: [email protected]
Privacy Policy
We do not sell your data. CHinUP is designed with a "Local First" architecture — your data stays on your device.
What We Process (On-Device)
- Motion Data: Accelerometer/gyroscope data from your iPhone and headphone motion data from AirPods — used for posture detection. Processed and discarded in real-time.
- HealthKit: If authorized, we read/write health data. All data remains within Apple's HealthKit ecosystem.
- TrueDepth: Used for calibration, processed instantaneously on-device. Nothing is saved or transmitted.
What We Collect (Off-Device)
- We collect no personal identifiers (Name, Email, Address).
- We may receive anonymous crash reports via Apple to improve stability.
Third Parties
- We use no advertisers or data brokers.
- Apple Inc.: Processes payments and provides secure iOS backups.
Your Rights
You may request deletion of all data associated with your account at any time. Since data is stored locally, deleting the app permanently erases all data.
Medical Disclaimer & Safety Warning
⚠ IMPORTANT: READ BEFORE USE
General Wellness
CHinUP is a general wellness application. It is not intended to diagnose, treat, cure, or prevent any disease or medical condition (e.g., Scoliosis, Kyphosis, or other spinal disorders).
Consult a Professional
You should consult with a qualified healthcare provider before starting any new fitness or exercise program. Sensor-based feedback on posture interpretation may not be 100% accurate.
Assumption of Risk
You acknowledge that exercise involves inherent physical risks. You voluntarily assume full responsibility for any damages that may occur during use of the App.
Stop If Pain Occurs
If you experience pain, dizziness, discomfort, or shortness of breath while using the App, IMMEDIATELY stop and seek medical assistance.
GDPR Compliance Statement
1. Data Controller
Boris Volkov, sole developer and operator of CHinUP.
2. Data Minimization
In accordance with Art. 5(1)(c) GDPR, CHinUP follows a strict data minimization policy. All data is processed locally on the user's device. We collect only what is strictly necessary for app functionality.
3. Legal Basis
Processing is based on contractual necessity — the data is required to provide the posture tracking service you signed up for.
4. Right to Erasure
You may exercise your right to erasure at any time. Since all data is stored locally on your device, uninstalling the app permanently deletes all data.
5. Cross-Border Transfers
No cross-border data transfers occur. All processing is on-device. No data is sent to external servers.
Attributions & Credits
© 2026 Boris Volkov. All Rights Reserved.
Apple Technologies
CHinUP utilizes proprietary frameworks by Apple Inc., including: SwiftUI, Core Motion, HealthKit, WatchKit. Apple, AirPods, iPhone, Apple Watch, and HealthKit are trademarks of Apple Inc.
AI Disclosure
Portions of application logic were developed with assistance from intelligent tools (Claude by Anthropic). All ownership, rights, and copyright of the final functional code belong to Boris Volkov.
Components
- Fonts: San Francisco (SF Pro, SF Mono)
- Icons: SF Symbols
Hosting
Website and Privacy URL may be hosted via GitHub Pages or Tilda.