# NumNumTile vs Mental Chronometry

The clearest difference is price: NumNumTile at Free against Mental Chronometry's $0.99. NumNumTile also leads on update cadence (every 4 months vs every 42 months) and iOS requirement (10.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

NumNumTile is free to download; Mental Chronometry costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NumNumTile ships an update every 4 months, Mental Chronometry every 42 months. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | NumNumTile | Mental Chronometry |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 42 months |
| Size | 9 MB | 201 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [淳 鲁](https://appshunter.io/developer/879071967) | [Paul Cohen](https://appshunter.io/developer/908777603) |

## What reviewers say

### NumNumTile

[App page](https://appshunter.io/ios/app/numnumtile/id1422373995)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mental Chronometry

[App page](https://appshunter.io/ios/app/mental-chronometry/id1574095844)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NumNumTile free?

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

### Is Mental Chronometry free?

Mental Chronometry costs $0.99, with no in-app purchases.

### Do NumNumTile or Mental Chronometry have ads?

Neither NumNumTile nor Mental Chronometry shows ads.

### Which is updated more often, NumNumTile or Mental Chronometry?

NumNumTile ships an update every 4 months, and Mental Chronometry every 42 months. Most recently, NumNumTile was updated on October 20, 2026 and Mental Chronometry on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*