# rectify vs NeckSense

The clearest difference is ads: NeckSense at none against rectify's shown. rectify's advantage is iOS requirement (15.6 vs 18.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. rectify sells 1 in-app purchase, starting at $4.99 per month and NeckSense sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | rectify | NeckSense |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | — |
| Size | 189 MB | 10 MB |
| Requires iOS | **15.6** | 18.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Mac |
| Age rating | 12+ | 12+ |
| Developer | [MinkTec GmbH](https://appshunter.io/developer/1634767386) | [shicheng huang](https://appshunter.io/developer/1798113389) |

## What reviewers say

### rectify

[App page](https://appshunter.io/ios/app/rectify-posture-tracking/id1634767384)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AirPods Head Tracking | $4.99 | per month |


### NeckSense

[App page](https://appshunter.io/ios/app/necksense/id6754149962)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $19.99 | per year |
| Premium Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is rectify free?

rectify is free to download, with in-app purchases available.

### Is NeckSense free?

NeckSense is free to download, with in-app purchases available.

### Do rectify or NeckSense have ads?

rectify shows ads; NeckSense does not.

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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.*