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Privacy Policy

Effective date: October 30, 2026

Overview

Wolog is a workout tracking app developed by Taras Darchuk. Your privacy matters. This policy explains what data Wolog collects, how it is used, and your rights.

The short version: Your workout data stays on your device by default. We don't sell your data, we don't show ads, and we don't share your data for advertising or tracking. We only work with the service providers listed below that help us run the app.

Data Stored on Your Device

All workout data, exercise history, routines, body measurements, and progress photos are stored locally on your device using Apple's SwiftData framework. This data never leaves your device unless you choose to enable cloud sync by signing in.

Account & Cloud Sync

Signing in is completely optional. If you choose to sign in with Apple or Google, we store:

  • Your name (as provided by the sign-in provider)
  • Your email address (for account identification)
  • Authentication tokens (stored securely in your device's Keychain)

When signed in, your workouts, routines, body measurements, exercise library, and workout and measurement photos are synced to our servers so you can access them across devices. Photos are kept in our cloud file storage. Sync data is transmitted over HTTPS and stored securely.

We also sync the training profile you fill in when setting up the app: your goals, experience level, available equipment, training days per week, and preferred units. This keeps your setup the same on every device.

Apple HealthKit

Wolog integrates with Apple HealthKit to:

  • Read body weight and heart rate data to display in the app
  • Write completed workouts and body weight entries to your Health data

HealthKit data is never sent to our servers, shared with third parties, or used for any purpose other than displaying it within the app. This data stays entirely on your device and within Apple's HealthKit framework.

Subscriptions

Wolog Pro subscriptions are purchased through the App Store, and Apple processes all payments. We never see or store your payment information; Apple manages all billing, receipts, and refunds.

To verify purchases and check your Pro status, we use Adapty (adapty.io). Adapty receives an anonymous profile identifier and your App Store transaction details (such as the product, purchase date, and subscription status). Adapty does not see your payment information.

Analytics, Crash Reports & Diagnostics

We use TelemetryDeck for anonymous usage statistics. TelemetryDeck does not store IP addresses, email addresses, or any personal information. A per-install anonymous identifier (derived from a hashed, non-reversible value) is used purely for counting unique installs in aggregate.

In versions of Wolog downloaded from the App Store, we use Sentry (sentry.io) to receive crash and performance reports. Sentry data is stored in the EU (Frankfurt, Germany). A report includes:

  • The crash stack trace, device model, iOS version, and app version
  • App hangs and performance data from Apple's MetricKit
  • Recent technical events leading up to the issue, such as screen names and sync identifiers and counts

If you are signed in, a report is tagged with your internal account ID, a random identifier, so we can match a crash to your account when you contact support. Reports never include exercise names, notes, photos, HealthKit data, your name, or your email address. Sentry does not collect screenshots, view hierarchy, session recordings, network requests, or your IP address, and the data is not used for advertising or tracking.

In Settings > Help > Send Diagnostics, you can generate a text report that helps us with a support request. It contains the app and iOS versions, the number of your records (workouts, exercises, routines, and photos), sync status, and a technical log: only identifiers and counts, never names, notes, photos, or health data. You decide whether and where to send it using the system share sheet (for example, by email or a messaging app). Nothing is sent automatically.

Wolog does not include any advertising frameworks or tracking pixels.

Our website (this landing page) uses Vercel Analytics and Google Analytics for basic traffic metrics. These do not track individual users or connect to your app usage.

Data Deletion

You can delete your account and all associated server data at any time from Settings > Account > Delete Account within the app. Local data on your device can be removed by deleting the app.

Third-Party Services

Wolog uses the following third-party services:

  • Apple Sign In — for optional authentication
  • Google Sign In — for optional authentication
  • Apple HealthKit — for health data integration (on-device only)
  • Apple StoreKit — for subscription management
  • TelemetryDeck — for anonymous, privacy-preserving usage statistics
  • Sentry — for crash and performance reports (EU region)
  • Adapty — for subscription management (purchase verification and Pro status)

We don't sell your data or share it for advertising. Apart from the services listed above, which process data only to provide their function in Wolog, we don't share your data with anyone.

Children's Privacy

Wolog is not directed at children under 13. We do not knowingly collect personal information from children.

Changes to This Policy

We may update this privacy policy from time to time. Changes will be posted on this page with an updated effective date.

Contact

If you have questions about this privacy policy, contact us at taras.darchuk@gmail.com