# Re vs Joint Angle Measurement

The clearest difference is in-app purchases: Re at none against Joint Angle Measurement's 2. Re also leads on iOS requirement (16.0 vs 18.0). Joint Angle Measurement's advantage is update cadence (weekly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Joint Angle Measurement sells 2 in-app purchases, starting at $2.99 per month. Re asks for nothing beyond the download.

Re ships an update every 3 months, Joint Angle Measurement weekly. The most recent releases landed on November 9, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Re | Joint Angle Measurement |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Freemium | — |
| Size | 74 MB | 32 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Craig Short](https://appshunter.io/developer/1775242433) | [ryo muranaka](https://appshunter.io/developer/1606480078) |

## What reviewers say

### Re

[App page](https://appshunter.io/ios/app/recalibrate/id6737204151)

This app offers a data-driven approach to managing stress and anxiety, utilizing haptic feedback and AI analysis to provide personalized interventions. It focuses on efficacy and speed, stripping away gamification for a more direct tool to regulate your nervous system.

**Highlights:** Haptic-first grounding exercises, Context-aware AI stress analyst, Correlative habit insights, Live efficacy data visualization, One-tap access to relief

**Features:** Family Sharing

**In-app purchases:** none


### Joint Angle Measurement

[App page](https://appshunter.io/ios/app/joint-angle-measurement/id6752212531)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| subscription | $2.99 | per month |
| Subscription | $19.99 | per year |


## Frequently asked questions

### Is Re free?

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

### Is Joint Angle Measurement free?

Joint Angle Measurement is free to download, with in-app purchases available.

### Do Re or Joint Angle Measurement have ads?

Neither Re nor Joint Angle Measurement shows ads.

### Which is updated more often, Re or Joint Angle Measurement?

Re ships an update every 3 months, and Joint Angle Measurement weekly. Most recently, Re was updated on November 9, 2026 and Joint Angle Measurement on November 8, 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.*