# re.flex vs JStepWatch

The clearest difference is price: re.flex at Free against JStepWatch's $0.99. re.flex also leads on update cadence (every 3 weeks vs every 24 months) and iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

re.flex is free to download; JStepWatch costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

re.flex ships an update every 3 weeks, JStepWatch every 24 months. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | re.flex | JStepWatch |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reflex/id1308263322/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 24 months |
| Monetization | Free | — |
| Size | 231 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kineto Tech Rehab](https://appshunter.io/developer/1308263321) | [Julian Werfel](https://appshunter.io/developer/1550842863) |

## What reviewers say

### re.flex

[App page](https://appshunter.io/ios/app/reflex/id1308263322)

This app helps you recover from joint pain at home with medically validated exercises. It uses patented sensor technology for accurate movement tracking and provides real-time feedback to improve exercise execution. Detailed reports track your progress and pain levels.

**Highlights:** Medically validated exercise programs, Patented sensor technology for movement tracking, Real-time acoustic and 3D visual feedback, Personalized digital exercise assistant, Detailed training and progress reports, Flexible training scheduling

**In-app purchases:** none


### JStepWatch

[App page](https://appshunter.io/ios/app/jstepwatch/id6463562157)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is re.flex free?

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

### Is JStepWatch free?

JStepWatch costs $0.99, with no in-app purchases.

### Do re.flex or JStepWatch have ads?

Neither re.flex nor JStepWatch shows ads.

### Which is updated more often, re.flex or JStepWatch?

re.flex ships an update every 3 weeks, and JStepWatch every 24 months. Most recently, re.flex was updated on October 3, 2026 and JStepWatch on September 29, 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.*