Enhance your fitness routine with a vast library of exercises and customizable training programs. Features include voice guidance, a built-in timer, and daily updated workouts, all available for free.
4.5(2 ratings)
Free
Best apps like Flex - Redefine Strength
7+ similar apps compared and reviewed
4.8 avg rating
7 free apps
Updated September 2026
Looking for something like Flex? We've analyzed 7+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.
Top Alternatives to Flex
5.0(3 ratings)
Free
This free application functions as a configurable timer, ideal for sports like billiards or pool. Its versatile design allows for use in various activities requiring timed intervals.
Boxing, HIIT, Interval timer by Mykhaylo Zhylevych
Workout. Tabata. Timed Right.Worth Considering
⚽ Sports
0.0(0 ratings)
Free
More apps like Flex
4
Personal Interval Timer
Timer, Boxing, HIIT, Tabata
Free
This app helps you manage timed workouts for sports like boxing, HIIT, and Tabata. It offers customizable presets, workout history tracking, and works with a locked screen and background music. Share your routines with friends and receive voice or bell notifications.
Works with locked screenPlays with background musicSaves custom presets
⚽ Sports
(14)
free with in-app purchases5
Harf Workout Timer
Free timer for workouts
Free
⚽ Sports
(0)
6
Pushup War
by francesco gugliuzzi
Free
⚽ Sports
(0)
7
Flex Fundraising
Raise More. Keep More. Do Less
Free
This app provides secure portals for organizations and their members to track fundraising progress. Leaders can monitor goals and send messages, while individuals benefit from incentive tracking, leaderboards, and easy sharing tools.
Secure participant portalsOrganizational progress trackingLeaderboards
⚽ Sports
(4)
ad-supported