Privacy Policy

Last updated: 7 October 2026

This policy explains how Chalkly for iPhone and Apple Watch handles your information. The short version: your data stays on your devices and in your own iCloud account. We don't collect it, sell it, or use it for advertising.

What the app stores

The app stores your workouts, routines, weekly schedule, custom exercises, personal records, bodyweight entries, and settings:

• On your devices. Data is saved in the app's private storage on your iPhone and Apple Watch.
• In your iCloud account (optional). If you're signed in to iCloud, a copy is kept in your private iCloud storage so you can restore it and use it across your devices. Apple operates iCloud; we can't access it.

We do not run servers that receive your workout data, and we don't use analytics or advertising tools. The app makes no network requests of its own beyond Apple's services (iCloud and Sign in with Apple).

Sign in with Apple

If you sign in with Apple, the app keeps the name, email address and anonymous user identifier that Apple provides, on your device only.

Apple Health

With your permission, the app uses Apple Health (HealthKit) to:

• save completed strength workouts, their duration, active calories and heart rate;
• read heart rate and active calories during a workout on Apple Watch;
• read and save your bodyweight.

Health data stays in Apple Health and on your device. We never use it for advertising or marketing, never sell it, and never share it with third parties. You can change these permissions at any time in Settings › Health › Data Access & Devices.

Coach summaries and on-device AI

After a workout, the app can show a short "Coach" summary of how it went.

• On iPhones that support Apple Intelligence, the summary is written by Apple's on-device language model (the Foundation Models framework). It runs entirely on your iPhone. Your workout details are not sent to us, to Apple, or to any third-party AI service, and they are not used to train any model.
• The model only sees a short list of facts about the workout you just finished, calculated by the app from your own history: exercises, sets, weights, reps, volume, and personal records.
• On other devices, the app writes the summary itself from the same facts, without AI.
• Summaries are shown once and are not stored.

The same on-device approach powers the app's other optional AI features:

• Weekly check-in on the Home screen, written from your last 7 days of training.
• Build with AI, which turns a request you type (for example "45 minutes, dumbbells only") into a routine. Only your request and the app's exercise list are given to the model.
• Exercise swaps during a workout. Only the exercise being replaced, the reason you type, and a shortlist of alternatives are given to the model.

Every suggestion is checked against the app's exercise library before it's shown, and nothing is saved unless you choose to.

Coach summaries and AI suggestions are general guidance, not personal training or medical advice, and AI-written text can occasionally be inaccurate.

Notifications

The app sends local notifications, for example when a rest timer finishes. These are created on your device; no notification data is sent to us.

Your choices

• Delete your data: Settings › Account › Delete Account & Data removes your data from the app and its iCloud backup.
• Export your data: Settings › iCloud Sync › Export Backup File.
• Revoke permissions: manage Health and notification access in iOS Settings.

Children

The app is not directed at children under 13 and doesn't knowingly collect information from them.

Changes

If this policy changes, we'll update it here and change the date above.

Contact

Questions about privacy: support@getchalkly.app