# マッスルロック vs SquatLock™

The clearest difference is review sentiment: マッスルロック at 100% against SquatLock™'s 60%. マッスルロック also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence, monetization model and device support there is nothing between them.

Both are free to download. SquatLock™ sells 1 in-app purchase, starting at $3.99 per month. マッスルロック asks for nothing beyond the download.

マッスルロック ships an update every 10 days, SquatLock™ weekly. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | マッスルロック | SquatLock™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/squatlock-screen-time-limit/id6754959979/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 60 MB | 56 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [yuto kobayashi](https://appshunter.io/developer/1604355732) | [SAKIPARU, LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1834185273) |

## What reviewers say

### マッスルロック

[App page](https://appshunter.io/ios/app/id6749794210)

This app helps combat smartphone addiction by replacing the urge to open locked apps with physical exercises. Users complete custom workouts to unlock their chosen apps for a limited time, building focus and physical strength simultaneously.

**Highlights:** Replace app usage with custom workouts, Randomized exercise missions, Timed app unlocking, Track workout progress and screen time, Customizable exercise routines, Schedule-based app locking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SquatLock™

[App page](https://appshunter.io/ios/app/squatlock-screen-time-limit/id6754959979)

This app locks distracting applications until you complete a squat, using motion sensors to track your progress. It offers team challenges and an SOS mode for accountability, helping you reduce screen time by making app access physically demanding.

**Highlights:** Smart app blocking via Screen Time API, Motion sensor-based squat detection, Team challenges for accountability, SOS rescue mode with friend accountability, Apple Health sync for squats and calories, Focus mode for deep work sessions, Streaks and medals for progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |


## Frequently asked questions

### Is マッスルロック free?

マッスルロック is free to download, with no in-app purchases.

### Is SquatLock™ free?

SquatLock™ is free to download, with in-app purchases available.

### Do マッスルロック or SquatLock™ have ads?

SquatLock™ shows ads; マッスルロック does not.

### Which is updated more often, マッスルロック or SquatLock™?

マッスルロック ships an update every 10 days, and SquatLock™ weekly. Most recently, マッスルロック was updated on November 5, 2026 and SquatLock™ on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*