# FLEX Stronger — user reviews

> 7 indexed App Store user reviews of FLEX Stronger by Kinetic Performance, rated 4.40/5 from 8 ratings.

- Source: https://appshunter.io/ios/app/flex-stronger/id1452436164/reviews
- App overview in markdown: https://appshunter.io/ios/app/flex-stronger/id1452436164.md
- Rating breakdown: 5★ 6 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 1

## Most critical reviews (7 lowest-rated)

### 1/5 — Latest update crashes with iOS 18

*2024-10-09*

App keeps crashing on iOS 18. Delete and reinstall doesn’t help either

### 3/5 — App crashes frequently

*2021-04-28, version 1.10.6*

I’m sick of the app crashing in the middle of a workout. I lose my stats/progress and have to restart the workout. Sort the app out ASAP!
Consider including an option to continue favourite workouts that have not been completed.

### 4/5 — Great In-Set Interface

*2022-02-09*

Love it during the set. It’s not as intuitive looking back at information. 

What I need for 5 starts (please make this happen!!!)
1. I need ability to input pounds and not kilos when it asks what weight I’m lifting (dumb American here)

What I’d love to be able to do:
1. See all the graphs (velocity/force/work/power/bar path) more easily when reviewing results
2. If I use a tablet/laptop witha bigger screen can I see all those meters at the same

### 5/5 — Awesome!!!

*2020-07-02*

Great technical support.  Easy to use and a great tool to help train athletes or yourself.  Would highly recommend for anyone serious about training.

### 5/5 — Great device!

*2020-06-03, version 1.8.1*

Such a cool app!! Really easy to use and I really like how it displays bar path.

### 5/5 — Happy buyer

*2019-12-09, version 1.5*

The unit shipped quick enough and after a bit of playing around I figured out how I like to use the app best. My workouts are far better compared to not having Flex. Can’t imagine going back to training without it.

### 5/5 — Great app, great device

*2019-12-03, version 1.5*

Great training feedback and helps get the most out of sessions. So easy to use. Even has a social function so I my friends can see my sessions and comment.

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-06.*