# 10,000 Hours vs Mastery Timer

The clearest difference is ads: Mastery Timer at none against 10,000 Hours's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 10,000 Hours sells 1 one-off in-app purchase and Mastery Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 10,000 Hours | Mastery Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 2 days |
| Size | 48 MB | 55 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Thieu Khue](https://appshunter.io/developer/1554439862) | [Arjun Gupte](https://appshunter.io/developer/1894098625) |

## What reviewers say

### 10,000 Hours

[App page](https://appshunter.io/ios/app/10000-hours-mastery-tracker/id6766202519)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Time Tracker Pro | $9.99 | one-time |


### Mastery Timer

[App page](https://appshunter.io/ios/app/mastery-timer/id6782785941)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Friends | $1.99 | one-time |


## Frequently asked questions

### Is 10,000 Hours free?

10,000 Hours is free to download, with in-app purchases available.

### Is Mastery Timer free?

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

### Do 10,000 Hours or Mastery Timer have ads?

10,000 Hours shows ads; Mastery Timer does not.

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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.*