# KneeFit vs re.flex

The clearest difference is update cadence: re.flex at every 3 weeks against KneeFit's every 71 months. KneeFit's advantage is ratings volume (4 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for KneeFit against 5.0 for re.flex. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

KneeFit ships an update every 71 months, re.flex every 3 weeks. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | KneeFit | re.flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/kneefit/id899101811/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/reflex/id1308263322/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 71 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 4 MB | 231 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alex Paul](https://appshunter.io/developer/524382614) | [Kineto Tech Rehab](https://appshunter.io/developer/1308263321) |

## What reviewers say

### KneeFit

[App page](https://appshunter.io/ios/app/kneefit/id899101811)

Strengthen and stretch your knees with daily exercises designed to promote knee health and fitness. This app is suitable for active individuals, those undergoing therapy, or anyone looking to maintain an active lifestyle.

**Highlights:** Strength exercises, Stretch exercises, Daily routines, Knee health maintenance, Therapy support, Fitness lifestyle integration

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is KneeFit free?

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

### Is re.flex free?

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

### Which has better reviews, KneeFit or re.flex?

KneeFit and re.flex are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

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

Neither KneeFit nor re.flex shows ads.

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

KneeFit ships an update every 71 months, and re.flex every 3 weeks. Most recently, KneeFit was updated on October 7, 2026 and re.flex on October 3, 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.*