FormLox
Analyse every rep you lift
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Record a set and turn your lift into numbers: bar path, tempo, time under tension, and your true 1RM. Plus an AI coach and a built-in video editor.
FormLox turns your phone into a lifting lab. Record a set and get instant, on-device analysis of how you actually moved the bar — no physical tracker, no guesswork.
Built for serious lifters who want to train by numbers, not by feel.
RECORD & ANALYZE
• Film a set and FormLox breaks down every rep
• Bar path, depth, and joint angles
• Tempo — eccentric vs concentric, rep by rep
• Time under tension across the whole set
• Estimated 1RM, RPE, and reps in reserve
• Auto-detects the lift you're doing
Analysis currently supports Squat, Overhead Press, and Deadlift, with more lifts on the way.
TRACK YOUR PROGRESS
• Estimated 1RM trends and personal records
• Weekly digest of volume, intensity, and effort
• Per-lift charts so you can watch your strength climb
YOUR AI COACH
• Chat with Lox for workout, recovery, and diet plans
• Macro-based meal plans in seconds
• Ask for tweaks and it revises on the spot
BUILT-IN VIDEO EDITOR
• Trim, add music, text, filters, and transitions
• Or just tell the AI what you want and it edits for you
• Share your lifts anywhere
REST TIMER & MORE
• Built-in rest timer and stopwatch
• A full library of lifts and variations
YOUR VIDEOS STAY PRIVATE
All form analysis runs on your device. Your training videos never leave your phone — we can't see them.
Follow @formlox_ on Instagram for updates and to share feedback.
—
FormLox offers optional auto-renewing subscriptions that raise your limits — more on-device form analyses, more AI coaching and saved plans, more video editing and AI edits, and longer history. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period; manage or cancel anytime in your App Store account settings.
Privacy Policy: https://formlox.com/privacy
Terms of Use: https://formlox.com/terms
Welcome to FormLox — our first release.
• Record a lift and get on-device form analysis: bar path, tempo, time under tension, and estimated 1RM
• AI coach (Lox) for workout, recovery, and diet plans
• Progress tracking with 1RM trends and personal records
• Built-in video editor — trim, caption, or just tell the AI what to change
More lifts and features are on the way. Follow @formlox_ on Instagram for updates and to share feedback.
The developer, Prerit Gupta, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Prerit Gupta
- Size
- 15.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- This app is rated 18+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls. - In-App Controls
Age Assurance
Frequent
Medical Treatment information
Contests
Contains
Advertising
Messaging and Chat
User-Generated Content
Health or Wellness Topics
- In-App Purchases
Yes
- FormLox Lox $99.99
- FormLox Lox $17.99
- FormLox Pro $59.99
- FormLox Pro $9.99
- Copyright
- © 2026 Prerit Gupta