# NumLock vs MathBlocker

The clearest difference is in-app purchases: MathBlocker at none against NumLock's 2. NumLock's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. NumLock sells 2 in-app purchases, starting at $4.99 per month. MathBlocker asks for nothing beyond the download.

## The numbers

| Metric | NumLock | MathBlocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mathblocker-stop-scrolling/id6761896675/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Monetization | — | Free |
| Size | 2 MB | 32 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Peter Li](https://appshunter.io/developer/424298074) | [Andy Phu](https://appshunter.io/developer/1775862376) |

## What reviewers say

### NumLock

[App page](https://appshunter.io/ios/app/numlock-math-screen-lock/id6761402140)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NumLock Pro Monthly | $4.99 | per month |
| NumLock Pro Annual | $39.99 | per year |


### MathBlocker

[App page](https://appshunter.io/ios/app/mathblocker-stop-scrolling/id6761896675)

This app places a math problem between you and apps you overuse. Solve a math question to regain access to blocked applications, with difficulty levels and problem sets from standardized tests.

**Highlights:** Block any app or category, Adjustable math problem difficulty, Choose from various standardized test problem sets, Earn back app time by solving problems, Set daily, weekly, and per-app limits, Schedule blocks by time of day, Usage dashboard

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

**In-app purchases:** none


## Frequently asked questions

### Is NumLock free?

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

### Is MathBlocker free?

MathBlocker is free to download, with no in-app purchases.

### Do NumLock or MathBlocker have ads?

Neither NumLock nor MathBlocker shows ads.

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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.*