# CosmosLock vs TMSPrep

The clearest difference is update cadence: TMSPrep at monthly against CosmosLock's every 3 months. CosmosLock's advantage is iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CosmosLock sells 2 in-app purchases, starting at $4.99 per month and TMSPrep sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

CosmosLock ships an update every 3 months, TMSPrep monthly. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | CosmosLock | TMSPrep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 21 MB | 19 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Deutsch](https://appshunter.io/developer/1871320930) | [Juan Eduardo Huke](https://appshunter.io/developer/1860414223) |

## What reviewers say

### CosmosLock

[App page](https://appshunter.io/ios/app/cosmoslock-science-focus/id6758907723)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| CosmosLock Premium Yearly | $29.99 | per year |


### TMSPrep

[App page](https://appshunter.io/ios/app/tmsprep/id6759726604)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TMSPrep Pro Monatlich | $4.99 | per month |


## Frequently asked questions

### Is CosmosLock free?

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

### Is TMSPrep free?

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

### Do CosmosLock or TMSPrep have ads?

Neither CosmosLock nor TMSPrep shows ads.

### Which is updated more often, CosmosLock or TMSPrep?

CosmosLock ships an update every 3 months, and TMSPrep monthly. Most recently, CosmosLock was updated on October 16, 2026 and TMSPrep on October 11, 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.*