1. Who We Are
Kairos is an iOS fitness tracking application developed by Pawin Peetawan, an independent developer ("we", "us", "our"). You can reach us at [email protected].
2. Data We Collect
Kairos is a fully offline, local-first app. All data is stored in a private SQLite database and system preferences on your device. The following categories of information may be stored:
| Category | Examples | Required? |
|---|---|---|
| Personal profile | Display name, date of birth, sex, height, body weight, fitness goal, activity level, equipment preference | Required |
| Body measurements | Weight, chest, waist, arms, hips, thighs, neck, calves, shoulders; progress photos | Optional |
| Workout data | Exercise names, sets, reps, weight lifted, duration, distance, rest periods, personal records, workout notes | Required |
| Custom exercises | User-created exercise names, instructions, muscle targets, custom images or icons you provide | Optional |
| App preferences | Theme, sound settings, measurement units, coach mode preferences, notification toggles | Optional |
We do not collect your email address, phone number, username, device identifiers, IP address, location, or any information that identifies you to us or any third party.
3. How We Use Your Data
Data you enter into Kairos is used solely to operate the app features you have requested:
- Tracking your workouts and exercises over time
- Calculating and displaying personal records, progress charts, and analytics
- Estimating calorie targets using your profile (BMR / TDEE calculation)
- Running the Coach Mode guided workout experience
- Restoring your session if the app is closed and reopened during a workout
Your data is never used for advertising, profiling, or any purpose beyond operating the features described above.
4. Data Storage & Security
All data is stored locally on your device in a private application directory. On iOS this is within the app sandbox, protected by the operating system. No data is sent to our servers because we do not operate any servers.
Your data is protected by the same device-level security you use to lock your phone (passcode, Face ID, Touch ID). We do not apply additional encryption beyond what iOS provides by default.
Deleting the app permanently removes all associated data from your device.
5. Data Sharing & Third Parties
We do not sell, rent, license, or share your personal data with any third party.
The only way data leaves your device is when you explicitly choose to share it:
- Workout summaries — you can share a text or image summary of a completed workout via the iOS share sheet. You choose the recipient (Messages, email, AirDrop, etc.).
- Workout plan export (.kros files) — you can export a structured training plan as a compressed file to share with others or keep as a backup. These files contain exercise and plan structure only — no personal biometric data.
- Measurement reports — you can share a progress report of your body measurements as text or CSV via the iOS share sheet.
All sharing is opt-in, user-initiated, and delivered via the iOS native share system. We are not involved in or informed of these share actions.
Kairos does not integrate with any analytics providers, advertising networks, crash reporting services, or social platforms.
6. Device Permissions
Kairos may request the following device permissions:
- Camera — only if you choose to photograph a custom exercise or take a progress photo. Never accessed automatically.
- Photo Library — only if you choose to select an existing photo for a custom exercise or progress photo. We do not scan your library or access photos you have not explicitly selected.
Kairos does not request access to your location, contacts, microphone, health data, calendar, or any other device feature.
7. Health Platform Integration
Kairos does not read from or write to Apple Health, HealthKit, or any other health platform. Your workout data exists only within Kairos and is not synchronised with any external health database.
8. Children's Privacy
Kairos is not directed at children under 13 years of age. We do not knowingly collect personal information from children. If you believe a child under 13 has provided personal information through the app, please contact us and we will assist with data removal.
9. Your Rights & Data Control
Because all your data is stored locally on your device, you have complete control at all times:
- Access — all data is visible within the app (workout history, measurements, profile settings).
- Deletion — you can delete individual workouts, exercises, or measurements from within the app. Deleting the app removes all data entirely.
- Export — you can export your workout plans as .kros files and your measurement history as CSV.
- Correction — all profile and workout data can be edited directly in the app.
As we do not receive or store any of your data on our systems, there is no additional action we need to take on our end to fulfil deletion or access requests. If you have questions, contact us at [email protected].
10. Changes to This Policy
If we make material changes to this privacy policy, we will update the "Last updated" date at the top of this page and, where appropriate, provide notice within the app. Continued use of Kairos after changes are posted constitutes your acceptance of the updated policy.
11. Contact
Questions, concerns, or requests about this policy:
- Email: [email protected]
- Website: trainkairos.com