# iAlignTest vs Straightness

The clearest difference is update cadence: Straightness at every 2 months against iAlignTest's every 32 months. Straightness also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

iAlignTest ships an update every 32 months, Straightness every 2 months. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | iAlignTest | Straightness |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 2 months** |
| Size | 8 MB | 59 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [ACOEM Group](https://appshunter.io/developer/1495816959) |

## What reviewers say

### iAlignTest

[App page](https://appshunter.io/ios/app/ialigntest/id535606893)

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

**In-app purchases:** none


### Straightness

[App page](https://appshunter.io/ios/app/straightness/id6759055500)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iAlignTest free?

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

### Is Straightness free?

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

### Do iAlignTest or Straightness have ads?

Neither iAlignTest nor Straightness shows ads.

### Which is updated more often, iAlignTest or Straightness?

iAlignTest ships an update every 32 months, and Straightness every 2 months. Most recently, iAlignTest was updated on September 22, 2026 and Straightness on September 17, 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.*