Privacy Policy

Last updated: November 14, 2026

SyncFix is a free iOS app that imports workout files (FIT, GPX, TCX) into Apple Health and fills in data that other apps left out. It has no account, no server and no analytics: everything it does with your data happens on your iPhone.

What the developer receives

Nothing from the app. SyncFix has no server, no account, no analytics and no advertising or other third-party code, so it has nowhere to send your data and no way to identify you.

Apple runs two channels of its own that reach the developer, and both are your choice: crash reports, if you turned on “Share With App Developers” in Settings → Privacy & Security → Analytics & Improvements, and the crash logs and feedback you send through TestFlight if you use a beta build. SyncFix adds nothing to either.

What SyncFix reads from Apple Health, and why

SyncFix asks to read the types below and uses them only on your iPhone.

• Workouts, with their heart rate, active energy, distance, speed, power, cycling cadence, workout routes and effort scores: to list your workouts, show what each one is missing, draw the charts and the map on a workout’s screen, find the workout a file belongs to, fill in a workout you fix, and build the file when you export one.
• Weight, resting heart rate, VO2max (cardio fitness), date of birth and sex: inputs for estimating calories and effort when a file does not carry them.

Distance means walking and running, cycling, swimming, rowing, paddle sports, skating, cross-country skiing, downhill snow sports and wheelchair distance; speed and power mean the cycling and running types.

You decide each type on Apple’s permission sheet, and SyncFix works with whatever you allow. Apple Health does not tell an app what it may read: where reading is off, that data simply looks empty to SyncFix.

What SyncFix writes to Apple Health

When you save an import, SyncFix writes one workout with what your files contained: heart rate, active energy, distance, speed, power, cycling cadence, the route and an effort score, plus the workout’s pauses, laps and details (indoor or outdoor, elevation gain, time zone, title, the file types it was built from, the app the original workout came from, and whether calories or effort were estimated). A computed effort score is written as an estimate; only a score you set yourself is written as your own rating.

SyncFix cannot change or delete what other apps wrote. It deletes Health data in two cases only, and only data it wrote itself: when you tap “Delete from Apple Health” on a workout SyncFix saved, and when you import a file for a workout SyncFix already saved, where the new copy replaces the old one.

Files you open

• A file another app hands over (Share, “Open in SyncFix”, AirDrop, Mail) arrives as a copy that iOS places in SyncFix’s storage. SyncFix deletes that copy as soon as it has read it, whether you then save the workout, cancel, or the file turns out to be unreadable.
• A file you choose in the Files browser is read where it is. SyncFix never changes or deletes it.

While the import screen is open, the file’s contents are held in memory and nowhere else.

What SyncFix keeps on your iPhone

• A copy of each workout it saved. The merged second-by-second data (route, elevation, heart rate, power, cadence, speed, distance, temperature, pauses, laps and which file each value came from) is stored in the app’s private storage, so a workout’s screen can show what Apple Health has no place for, such as running cadence. This copy is left out of iCloud and computer backups, is protected by iOS file encryption while the iPhone is locked, and never leaves the device.
• Your settings: appearance, the import defaults and, if you entered them, your body weight, maximum heart rate and heart-rate zones. These are ordinary app preferences and, like any app’s preferences, are part of your iPhone’s backup if you have backups turned on.

SyncFix does not use iCloud and stores nothing else.

Exporting and sharing

SyncFix can turn a workout from Apple Health back into a FIT or GPX file. This happens only when you choose Export on a workout: SyncFix creates the file in its temporary storage and opens the share sheet. The file, with its route and heart rate, goes where you send it and nowhere else; SyncFix removes its own copy the next time it starts.

Maps

A workout’s route is drawn on a map from Apple Maps. To show it, your iPhone requests the map of that area from Apple. SyncFix does not send the route, your workouts or anything that identifies you; the request is handled by Apple under Apple’s privacy policy. This is the only time the app uses the network.

Deleting your data

• One workout: open a workout SyncFix saved and tap “Delete from Apple Health”. This removes the workout and everything SyncFix wrote with it from Apple Health, together with the copy SyncFix kept.
• Everything SyncFix keeps: delete the app. Its storage goes with it, including every kept copy and your settings. Workouts already saved to Apple Health stay there until you delete them in SyncFix or in the Health app.
• If you delete a SyncFix workout in the Health app instead, SyncFix removes the copy it kept the next time you open it, as long as it is still allowed to save workouts to Apple Health. Otherwise that copy goes when you delete the app.
• Access: to stop SyncFix reading or writing Health data, turn the switches off in Settings → Apps → Health → Data Access & Devices → SyncFix.

If a later version asks to share data

Everything above describes SyncFix as it is today: your data stays on your iPhone unless you send it somewhere yourself.

A later version may add optional features that work differently, for example guidance shaped by your own training, or a way to contribute workout data that helps develop and improve features like that. If that happens:

• It will be off until you turn it on. SyncFix will ask on a screen of its own. Using the app, updating it or accepting these documents will never count as a yes.
• The request will be specific. It will say which data would leave your iPhone, what it would be used for, who would process it and how long it would be kept.
• No name attached. Data you contribute would go without your name or contact details. A route can still show where you were, so the request will say whether routes are included.
• Saying no changes nothing. Importing, fixing and exporting workouts will work exactly as they do now.
• You can change your mind. A switch in Settings will stop the sharing, and the request will say what happens to data already contributed.
• This policy changes first. It and the app’s privacy details on the App Store will be updated before such a feature appears, not after.

Changes

If this policy changes, the new version is published at this address with a new date.

Contact

SyncFix is made by an individual developer, named as the seller on the app’s App Store page. Questions about this policy or your data: support@syncfix.olum.app.