# MSCLS — Private Gym & Strength Tracker for iPhone

> A beautifully crafted, on-device gym and strength tracking app for iPhone. Free to download, with an optional full-version unlock. No accounts, no personal data collected. Privacy at its core.

MSCLS is an iOS app for logging strength training workouts. It is built with Apple's native design language and follows Apple Human Interface Guidelines. All workout data stays on your device — there are no accounts and no personal data collection. The app collects a small set of anonymous usage events (e.g. tutorial completion) via PostHog (EU region) to help improve the app; no personal data is included and users can opt out in Settings. If iCloud is enabled, sync stays within the user's own iCloud account.

MSCLS is free to download and use, with a genuinely useful free tier. An optional full-version unlock (a one-time lifetime purchase, or a monthly subscription with a 30-day free trial) opens the remaining features. It is available on the App Store (id 6772619596).

## Free version and full unlock

The free tier covers everyday training: logging workouts (sets, reps, weight, and gym cardio), the dynamic muscle heatmap, the full exercise library, workout history and personal records, body-weight tracking, a starter set of routines, one gym, and a few custom exercises — plus Strava export, Apple Health sync, Apple Watch heart rate, and shareable workout cards.

The full version adds: Garmin integration (heart rate plus recording native strength activities to Garmin Connect), progress analytics (weight and volume trend charts, and per-gym personal-record breakdowns), and unlimited routines, gyms, and custom exercises. The app is sold as-is.

## Key features

- **Thermal Muscle Heatmap**: A dynamic 7-day heatmap across male and female body figures shows which muscles were trained and how hard. Helps identify overtraining and neglected muscle groups at a glance.
- **Live Workout Runner**: A focused active view for logging sets, weights, and reps. Personal records are detected and surfaced in real time.
- **Multi-Gym Tracking**: Logs and personal records are kept separate per gym location, so different equipment and plate weights never blur together. One gym on the free tier; multiple gyms and per-gym record breakdowns in the full version.
- **Smart Exercise Library**: A searchable, filterable picker for every exercise. Effective weight for bodyweight variants is calculated automatically.
- **Optional Heart Rate**: Heart rate is strictly opt-in. The iPhone runs the session on its own; a paired Apple Watch or Garmin watch can stream heart rate when desired.
- **Apple Health Sync**: Finished sessions, durations, and heart-rate data can be synced to Apple Health.
- **Strava Export**: Opt-in upload of finished workouts to Strava as rich strength activities, including a muscle heatmap, heart-rate chart, and per-exercise breakdown.
- **Garmin Connect Recording** (full version): Opt-in — with a paired Garmin watch, a finished strength workout is recorded as a native activity in Garmin Connect (with heart rate), counting toward Garmin training metrics just like a watch-recorded workout. Writing strength sessions into Garmin Connect is an integration most gym trackers do not offer.
- **Privacy by Design**: No account or login required. No personal data collected. Workout data never leaves the device unless the user explicitly chooses to share it. Anonymous usage events (opt-out) help improve the app.

## Ideal for

- People who want a gym tracker that doesn't collect or monetize their health data
- Lifters who train at multiple gyms and need separate logs per location
- Anyone who wants to visualize weekly muscle load and recovery
- iPhone users who value native iOS design and do not want a subscription to a cloud service
- Users who want optional Strava or Apple Health integration without being forced into it
- Garmin users who want their gym sessions recorded to Garmin Connect, not just their runs and rides

## Platform

- **Requires**: iPhone with iOS 17 or later
- **Optional**: Apple Watch for heart-rate streaming, or a Garmin watch for heart-rate streaming and optional recording of workouts to Garmin Connect (no logging on watch required)
- **Languages**: English
- **Privacy**: No account, no personal data collected; anonymous usage events only (opt-out in Settings)

## Pricing

- Free to download and use, with a genuinely useful free tier
- Full-version unlock — Lifetime: €24.99 one-time purchase, or Monthly: €1.49/month with a 30-day free trial
- Current pricing is always shown on the App Store listing

## Links

- [Website](https://mscls.app/): Homepage with feature overview and FAQ
- [Privacy Policy](https://mscls.app/privacy.html): Full privacy policy
- [App Store](https://apps.apple.com/app/id6772619596): Download on the App Store
- [Instagram](https://www.instagram.com/mscls.app): @mscls.app
- [Contact](mailto:mscls.app@icloud.com): mscls.app@icloud.com