# Math Challenge by 0011.uk vs LockStudy

The clearest difference is in-app purchases: Math Challenge by 0011.uk at none against LockStudy's 2. Math Challenge by 0011.uk also leads on update cadence (every 2 weeks vs monthly) and iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. LockStudy sells 2 in-app purchases, starting at $1.99 per month. Math Challenge by 0011.uk asks for nothing beyond the download.

Math Challenge by 0011.uk ships an update every 2 weeks, LockStudy monthly. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Math Challenge by 0011.uk | LockStudy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 35 MB | 8 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Panupong Sakulsaeng](https://appshunter.io/developer/1848610895) | [Glanz Studio](https://appshunter.io/developer/1785357972) |

## What reviewers say

### Math Challenge by 0011.uk

[App page](https://appshunter.io/ios/app/math-challenge-by-0011uk/id6755386689)

**Features:** macOS Compatibility

**In-app purchases:** none


### LockStudy

[App page](https://appshunter.io/ios/app/lockstudy-built-for-focus/id6756006023)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LockStudy Pro Monthly | $1.99 | per month |
| LockStudy Pro Lifetime | $22.99 | one-time |


## Frequently asked questions

### Is Math Challenge by 0011.uk free?

Math Challenge by 0011.uk is free to download, with no in-app purchases.

### Is LockStudy free?

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

### Do Math Challenge by 0011.uk or LockStudy have ads?

Neither Math Challenge by 0011.uk nor LockStudy shows ads.

### Which is updated more often, Math Challenge by 0011.uk or LockStudy?

Math Challenge by 0011.uk ships an update every 2 weeks, and LockStudy monthly. Most recently, Math Challenge by 0011.uk was updated on October 15, 2026 and LockStudy on October 9, 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.*