# DoReMi on Guitar vs Sample for Science

The clearest difference is ads: Sample for Science at none against DoReMi on Guitar's shown. Sample for Science also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, update cadence 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.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | DoReMi on Guitar | Sample for Science |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Size | 17 MB | 58 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 9+ | +4 |
| Developer | [Kenta Shorakui](https://appshunter.io/developer/1546188715) | [Universidade Federal Fluminense - UFF](https://appshunter.io/developer/739312311) |

## What reviewers say

### DoReMi on Guitar

[App page](https://appshunter.io/ios/app/doremi-on-guitar/id6447275143)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sample for Science

[App page](https://appshunter.io/ios/app/sample-for-science/id6470819452)

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

**In-app purchases:** none


## Frequently asked questions

### Is DoReMi on Guitar free?

DoReMi on Guitar is free to download, with no in-app purchases.

### Is Sample for Science free?

Sample for Science is free to download, with no in-app purchases.

### Do DoReMi on Guitar or Sample for Science have ads?

DoReMi on Guitar shows ads; Sample for Science does not.

### Which is updated more often, DoReMi on Guitar or Sample for Science?

DoReMi on Guitar ships an update every 6 weeks, and Sample for Science every 6 weeks. Most recently, DoReMi on Guitar was updated on October 10, 2026 and Sample for Science on October 19, 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.*