# BONEcheck vs Y

The clearest difference is iOS requirement: BONEcheck at 13.0 against Y's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BONEcheck ships an update every 4 days, Y every 8 days. The most recent releases landed on September 13, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | BONEcheck | Y |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 8 days |
| Size | 31 MB | 64 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Saigon Precision Medicine Research Center](https://appshunter.io/developer/1639983594) | [Institute of Population, Health and Development](https://appshunter.io/developer/1464719946) |

## What reviewers say

### BONEcheck

[App page](https://appshunter.io/ios/app/bonecheck/id6447424513)

**Features:** macOS Compatibility

**In-app purchases:** none


### Y

[App page](https://appshunter.io/ios/app/y-mind/id6748937099)

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

**In-app purchases:** none


## Frequently asked questions

### Is BONEcheck free?

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

### Is Y free?

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

### Do BONEcheck or Y have ads?

Neither BONEcheck nor Y shows ads.

### Which is updated more often, BONEcheck or Y?

BONEcheck ships an update every 4 days, and Y every 8 days. Most recently, BONEcheck was updated on September 13, 2026 and Y on September 12, 2026.

---

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