# AccelVisu2 vs 555 Timer & Oscillators Pro

The clearest difference is price: AccelVisu2 at Free against 555 Timer & Oscillators Pro's $4.99. AccelVisu2 also leads on iOS requirement (8.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

AccelVisu2 is free to download; 555 Timer & Oscillators Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | AccelVisu2 | 555 Timer & Oscillators Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 11 MB | 22 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Stephan Lueck](https://appshunter.io/developer/479664499) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### AccelVisu2

[App page](https://appshunter.io/ios/app/accelvisu2/id1093117794)

**In-app purchases:** none


### 555 Timer & Oscillators Pro

[App page](https://appshunter.io/ios/app/555-timer-and-oscillators-pro/id6504415162)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AccelVisu2 free?

AccelVisu2 is free to download, with no in-app purchases.

### Is 555 Timer & Oscillators Pro free?

555 Timer & Oscillators Pro costs $4.99, with no in-app purchases.

### Do AccelVisu2 or 555 Timer & Oscillators Pro have ads?

Neither AccelVisu2 nor 555 Timer & Oscillators Pro shows ads.

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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.*