iPhone Screenshots


A fun workout with friends

Flex is a fab and fun way to stay fit through quick face to face challenges with friends on video. You can play tag with these challenges on your friends and move up the levels to make them sweat it. At the end of every challenge, the scoreboard indicates the top performer, celebrating your triumph. Share screenshots of these crazy and witty moments during this thrilling multiplayer combat, on social platforms.


- More motivation & no lame excuses
- Collaborate to push each other, improving performance
- No need of any equipment, just some fun company
- You can add up to 6 friends to turn up the heat
- It can be short and sweet, keeping you fit even when you have a busy day
- No elaborate download or logins. Just share a link, your friends click on it and you're ready!
- Sweating it out hasn’t been more FUN!

What’s New

Version 1.2.6

In the run-up to the festive season, we decided to do some Diwali cleaning of our own. We cleaned up those bugs just in time to gift you a healthy and fit Diwali with Flex!

Ratings and Reviews

4.9 out of 5
19 Ratings

19 Ratings

reemabehl ,

The most exhilarating experience of my lockdown

Flex has got to be the coolest app that I have discovered during this lockdown! The idea that I can workout with my mom or my best friend without leaving my home and talk to them at the same time and compete with them (and win 🤭) all seemed too good to be true but one workout on Flex and I was sold! I now use the app daily for 10 mins and connect with so many of my friends, challenging them to different workouts and boy is it fun or what! PS: This will be the best gift you can give to yourself! Thank me later 💪💪

Developer Response ,

We are pleased that you enjoyed the app. If there is anything we can do for you, just let us know at feedback@ultrahuman.com!
Have a wonderful day!

sps_013 ,

Best app for group workouts.

This app means business, come to the app invite friends if you want to challenge them and you are already set to do a quick workout.
I hope they add more weight training circuits as well. Would fun to compete in that segment.

Developer Response ,

Thanks for the suggestion! That's a great idea for a new feature.

Regular customer *59282 ,

Fun app to workout.

Flex has changed the way I workout. Now I can invite my friends and have a great time! It’s just sending a link to them and jumping on a video call, couldn’t be easier.


112.7 MB

Requires iOS 13.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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