Comparison

FormFix vs Notch

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FormFix

This AI-powered app analyzes your lifting form in real-time, offering instant feedback and corrections for exercises like squats. Record and review your lifts in slow motion to refine technique and achieve your fitness goals.

Highlights
  • Real-time AI form tracking
  • Instant feedback on technique
  • Detailed analysis for squats
  • Slow-motion lift review
  • Technique refinement
  • Performance enhancement
Features
Read full description

Introducing our AI-powered lifting app that tracks your body mechanics in real time, providing instant feedback on your form. With detailed analysis and corrections for squats, you'll learn exactly where improvements are needed. Plus, record your lifts to review your angles in slow motion, allowing you to refine your technique and enhance your performance. Perfect your lifts and reach your fitness goals with our innovative tool. In the world of strength training, proper technique is paramount. Whether you’re a beginner or a seasoned lifter, mastering your lifts Terms of Use: https://app.formfix.com.co/terms-of-service Privacy Policy: https://app.formfix.com.co/privacy-policy

About

Notch

Features
Read full description

Stop forgetting to practice. Start notching reps. Notch is the Watch-first app built for Grease the Groove training, the proven method of doing small sets throughout your day to build strength without burning out. Raise your wrist. Tap. Hang. Tap when done. That's it. WHAT IS GREASE THE GROOVE? Coined by strength coach Pavel Tsatsouline, Grease the Groove (GTG) means doing frequent, sub-maximal sets of one movement throughout the day. Never to failure, always fresh. It's how you go from 3 pull-ups to 15. It's how desk workers build dead hang strength into their commute. It's how you get stronger without a gym membership. The catch is you have to remember to do the sets. That's where Notch comes in. ON YOUR APPLE WATCH - Timer-based logging for dead hangs, planks, L-sits, and any hold exercise - Rep-based logging for pull-ups, push-ups, squats. Tap to confirm a set - Live countdown with haptic ticks and a finish buzz - Optional heart rate capture during holds - Today count and streak right on your wrist - Daily reminder if you haven't logged anything yet ON YOUR IPHONE - History of every set you've ever logged - Progression charts so you can see strength build over weeks - Personal bests and longest streak - Settings, exercise library, reminder time - Watch and phone stay synced in the background FREE VS PRO Free forever: - Core watch logging (timer and reps) - Today's set count - Basic streak - Up to 3 exercises Pro, a $4.99 one-time purchase: - Full history with progression charts - Personal bests and longest streak - Unlimited exercises - Complication and Smart Stack widget No subscription. No ads. No upsells. You buy it once. PRIVACY Your sets, heart rate samples, and streaks live in a local database on your devices. No third-party analytics. No ad networks. No tracking SDKs. The watch reads heart rate via HealthKit only while a hold timer is running. The iPhone can save each finished set to Apple Health as a workout if you allow it. WHO IT'S FOR - Climbers training dead hangs between meetings - Desk workers building plank time - Calisthenics folks running pull-up GTG protocols - Anyone building a strength habit in 30 seconds at a time - People tired of fitness apps that bury logging behind four taps If you've ever stuck a pull-up bar in a doorway and forgotten about it for three weeks, Notch is for you. Built by one developer. Watch-first.

Screenshots

FormFix3 screens
Notch4 screens

Verdict

The call

The clearest difference is update cadence: Notch at every 3 days against FormFix's every 3 weeks. FormFix's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FormFix sells 2 in-app purchases, starting at $8.99 per month and Notch sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FormFix ships an update every 3 weeks, Notch every 3 days. Both last shipped on October 24, 2026.

Scorecard2 real differences · 8 level
FormFix versus Notch: the parameters behind the verdict, then further details
ParameterFormFixNotch
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.6 — better17.0
Further details — not scored
Size67 MB31 MB
Age rating4+4+
DeveloperSolomon HaberkostCode to Muscle

In-app purchases

2 purchases

FormFix

Subscriptions2
  • 1 Month Premium7 Days trial$8.991 Month
  • 1 Year Premium7 Days trial$99.991 Year
1 purchases

Notch

One-time1
  • Notch Pro Unlock$4.99

Questions

Is FormFix free?
FormFix is free to download, with in-app purchases available.
Is Notch free?
Notch is free to download, with in-app purchases available.
Do FormFix or Notch have ads?
Neither FormFix nor Notch shows ads.
Which is updated more often, FormFix or Notch?
FormFix ships an update every 3 weeks, and Notch every 3 days. Most recently, FormFix was updated on October 24, 2026 and Notch on October 24, 2026.

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