# Lock vs StudyKey

The clearest difference is update cadence: StudyKey at every 9 days against Lock's every 7 months. Lock's advantage is iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Lock sells 2 in-app purchases, starting at $0.99 per 3 months and StudyKey sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Lock ships an update every 7 months, StudyKey every 9 days. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Lock | StudyKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 9 days** |
| Size | 42 MB | 16 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kerem Cebi](https://appshunter.io/developer/1452328491) | [BERAT ONER](https://appshunter.io/developer/6783454346) |

## What reviewers say

### Lock

[App page](https://appshunter.io/ios/app/lock-screen-time-control/id6760575363)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Aylık | $0.99 | per 3 months |
| Annual | $1.99 | per year |


### StudyKey

[App page](https://appshunter.io/ios/app/studykey-learn-and-focus/id6791251481)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is Lock free?

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

### Is StudyKey free?

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

### Do Lock or StudyKey have ads?

Neither Lock nor StudyKey shows ads.

### Which is updated more often, Lock or StudyKey?

Lock ships an update every 7 months, and StudyKey every 9 days. Most recently, Lock was updated on November 13, 2026 and StudyKey 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.*