# GrindLock Screen Time Control vs Lock In Fit

The clearest difference is in-app purchases: Lock In Fit at none against GrindLock Screen Time Control's 4. GrindLock Screen Time Control's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (18.6 vs 26.0). On price there is nothing between them.

Both are free to download. GrindLock Screen Time Control sells 4 in-app purchases, starting at $14.99 per month. Lock In Fit asks for nothing beyond the download.

GrindLock Screen Time Control ships an update every 2 days, Lock In Fit every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | GrindLock Screen Time Control | Lock In Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (13 ratings)](https://appshunter.io/ios/app/grindlock-screen-time-control/id6761210069/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Subscription | — |
| Size | 190 MB | 120 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Slice of Life Ltd](https://appshunter.io/developer/896829956) | [dhruvil patel](https://appshunter.io/developer/1852555404) |

## What reviewers say

### GrindLock Screen Time Control

[App page](https://appshunter.io/ios/app/grindlock-screen-time-control/id6761210069)

This app transforms phone addiction into fitness by requiring exercise to unlock screen time. Earn minutes of app usage by completing pushups or squats, building an athletic physique while reducing digital distractions. It helps users regain control of their time and improve focus.

**Highlights:** Smart app blocker for addictive apps, Exercise-based screen time timer, Unlock minutes with pushups/squats, Pose detection for rep counting, Fitness progress tracking, Digital wellbeing tools and reports

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited (1 month) | $14.99 | per month |
| Unlimited (1 Year) | $19.99 | per year |
| Unlimited (1 year) | $29.99 | per year |
| Unlimited (1 year) | $49.99 | per year |


### Lock In Fit

[App page](https://appshunter.io/ios/app/lock-in-fit-app-blocker/id6770064937)

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

**In-app purchases:** none


## Frequently asked questions

### Is GrindLock Screen Time Control free?

GrindLock Screen Time Control is free to download, with in-app purchases available.

### Is Lock In Fit free?

Lock In Fit is free to download, with no in-app purchases.

### Which is updated more often, GrindLock Screen Time Control or Lock In Fit?

GrindLock Screen Time Control ships an update every 2 days, and Lock In Fit every 3 weeks. Most recently, GrindLock Screen Time Control was updated on October 31, 2026 and Lock In Fit on October 31, 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.*