# SimpleAcceleration vs yoctoHTRTFit

The clearest difference is iOS requirement: yoctoHTRTFit at 12.0 against SimpleAcceleration'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.

SimpleAcceleration ships an update every 3 weeks, yoctoHTRTFit monthly. Both last shipped on October 14, 2026.

## The numbers

| Metric | SimpleAcceleration | yoctoHTRTFit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 13 MB | 86 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [yuuki iwamoto](https://appshunter.io/developer/1039662444) | [YOCTO CO.,LTD.](https://appshunter.io/developer/381992814) |

## What reviewers say

### SimpleAcceleration

[App page](https://appshunter.io/ios/app/simpleacceleration/id1039662445)

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

**In-app purchases:** none


### yoctoHTRTFit

[App page](https://appshunter.io/ios/app/yoctohtrtfit/id6741189718)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SimpleAcceleration free?

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

### Is yoctoHTRTFit free?

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

### Do SimpleAcceleration or yoctoHTRTFit have ads?

Neither SimpleAcceleration nor yoctoHTRTFit shows ads.

### Which is updated more often, SimpleAcceleration or yoctoHTRTFit?

SimpleAcceleration ships an update every 3 weeks, and yoctoHTRTFit monthly. Most recently, SimpleAcceleration was updated on October 14, 2026 and yoctoHTRTFit on October 14, 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.*