Own Your
Fitness Data
A local-first, open-source fitness tracker. No accounts, no tracking, and no cloud. Just you and your gains.
View on GitHub
Built for Performance & Privacy
No telemetry, no tracking, no subscription. Just a powerful engine for your fitness journey.
Offline Strength Tracking
Log your sets and reps directly to your device. No internet required. Your data never leaves your pocket.
VIEW MOREPrivacy First
No sign-ups, no logins, and no third-party tracking. Musclog respects your digital sovereignty.
PRIVACY MANIFESTOOpen Source
Musclog is community-driven. Audit the code, contribute features, or fork it to make it your own.
VIEW SOURCEEverything You Need to Train Smarter
From AI-powered coaching to detailed analytics, Musclog gives you the tools to take full control of your fitness journey.
AI Coach (Loggy)
Chat with your AI fitness coach for personalized workout plans, nutrition advice, and meal photo estimation.
Barcode Scanner
Quickly add products by scanning barcodes. Access the Open Food Facts database with millions of products.
Weekly Check-ins
Automated 7-day analysis of your progress with dynamic goal adjustments to keep you on track.
Progress Analytics
Interactive charts for weight, body fat, and lifting progress. Track your TDEE with real data.
Cycle Awareness
Track menstrual phases and receive training recommendations optimized for your cycle.
Workout Templates
Create custom routines like PPL or Upper/Lower. Access an extensive exercise library with muscle targeting.
Health Connect
Sync with Google Health Connect to share data with other health and fitness apps on Android.
Encrypted Storage
Your sensitive health data is encrypted at rest using AES. Export anytime as JSON or Excel.
Screenshot reel
See Musclog in motion
A slow scrolling preview of real app screens. Hover to pause and click any card to open it larger.
How It Works
Get started in minutes. No complicated setup, no subscriptions, no data harvesting.
Download & Go
Install Musclog from the App Store or Google Play. No account required — just open and start tracking.
Log Your Training
Record sets, reps, and weights. Scan barcodes or snap photos to log meals. Everything stays on your device.
Track Progress
Review weekly check-ins, visualize trends, and let the AI coach help you optimize your approach.
"Musclog is the first app that respects my privacy while providing a world-class training experience. Local-first is the future."
Laura F.
Busy Developer
Ready to start?
Join thousands of athletes who use Musclog to track their progress without compromising privacy.
