Comparison

Radical Trainers vs Interval Timer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Radical Trainers

Features
Read full description

We’ve rebuilt the Radical Fitness App from top to bottom. The third generation Radical Fitness App is here now. Easier and friendlier to navigate - plus create your own playlists as simple as 123. Bigger, better, faster - download the new App today and get the same features and benefits, which have been significantly upgraded for the users' simplicity of use. Key features of the new App: • Design is now simpler to operate. • Program layout is now customized vertically, so much easier to click on the program and the release you want to access. Simply scroll for mix selection. • Users can now view six mixes on the screen compared to only two to three before. • Searching for tracks is smoother as you can easily move back to where you were previously without starting back at the beginning again. • A new indicator gives you a visual record of the tracks being downloaded. • Individual tracks can now be downloaded rather than the whole mix, meaning that you can also now delete a single track from a mix you’ve downloaded. This frees up space with tracks you won’t use. • Creating playlists is easier and more functional, and the deleting of tracks is a simple smooth double click. • In MY LIBRARY, you can view only the mixes that have been downloaded, which makes searching a breeze. • Searching for your favorite track just got easier as you can now search for a song by its name. • FAVORITES, you can select favorite tracks, making it easier to search for tracks you like. • In NOW PLAYING, you can view what track is coming up next. • In NOW PLAYING, you can also see the Beats per Min of each track, which allows you to see the peaks in a class. • If you get a new device, you will keep your playlists and favorites; you will only have to download them again or use them with an internet connection!

About

Interval Timer

This app provides a customizable interval timer for various training routines, including HIIT and Tabata. Easily set up custom workouts, track your progress, and stay motivated with visual cues and audio notifications. It's suitable for a wide range of activities from fitness to productivity.

Highlights
  • Customizable workout setup
  • Progress tracking with calendar
  • Saveable custom presets
  • Color-coded notifications
  • Listen to music/audiobooks
  • Large, full-screen display
  • Widget for easy access
Features
Read full description

Interval Timer: Tabata and HIIT is a customizable timer for sports. Use it for High-intensity interval training and workout. It's a free sports interval timer app that makes it easy to create your custom training routine. Use it as your timer for training or exercise. This sports timer is great for crossfit, fitness and running. The sports timer will also be useful for various activities such as crossfit, jogging, boxing,circuit training,breathing exercises and yoga. You can use this circuit timer as a productivity timer to focus on your work tasks. Key features: Setup workout Tracking your progress Customizable presets Notifications & colors Motivation Listening music or books Huge digits Widget SETUP WORKOUT Set up, edit and save your own workouts with the customizable feature. Add as many intervals as you like. You can add a 10 second rest period and a 20 second work period, as well as a 5 second interval between exercises. TRACKING PROGRESS Track your workouts with a Calendar. Plan and track events, and get notified when you have a training scheduled. With this feature, you will not miss a single workout and will keep track of your progress. CUSTOMIZABLE PRESETS Save your workouts in the presets section. It's also possible to create your own custom intervals. You can add an unlimited number of presets. NOTIFICATIONS & COLORS Each training phase is easy to distinguish by a different color and is initiated by an individually adjustable signal (sound, vibration, voice) MOTIVATION Each completed exercise motivates you to achieve higher goals. Enjoy your training and achieve your fitness goals with the interval timer. LISTENING MUSIC Listen to motivational audiobooks or your favorite music and get inspired and energized. Full screen color coded display is easy to read from a distance. Widget helps you train without being distracted by the constant unlocking of your phone. Interval Timer: Tabata and HIIT is an easy to use sports workout timer for your daily fitness training at home, at the gym or everywhere else.

Screenshots

Radical Trainers4 screens
Interval Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Radical Trainers at none against Interval Timer's 12. Radical Trainers also leads on ads (none vs shown). Interval Timer's advantage is update cadence (monthly vs every 3 months) and device support (4 vs 2). On price there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interval Timer sells 12 in-app purchases, starting at $2.09 per month. Radical Trainers asks for nothing beyond the download.

UpkeepUpdate frequency

Radical Trainers ships an update every 3 months, Interval Timer monthly. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Radical Trainers versus Interval Timer: the parameters behind the verdict, then further details
ParameterRadical TrainersInterval Timer
PriceFreeFree
Rating—4.9 (388 ratings) — better
Positive reviews—96.6% of reviews
Number of ratings—388 — better
Update frequencyEvery 3 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.015.0 — better
Further details — not scored
Size61 MB112 MB
Age rating4+4+
DeveloperRadical FitnessSimpleInnovation LLC

Bugs and requests

Radical Trainers

Not enough reviews yet to summarise bugs or requests.

Interval Timer

Reported bugs

2 issues
  • Occasional app crashes
  • Compatibility issues with older devices

Requested features

3 requests
  • More pre-designed workout routines
  • Ability to name and customize exercises
  • Option to adjust countdown time between intervals

In-app purchases

None

Radical Trainers

No in-app purchases

12 purchases

Interval Timer

Subscriptions8
  • Timer PRO for 1 month: 30% OFF7 Days trial$2.091 Month
  • Timer PRO for 1 month: 25% OFF7 Days trial$2.291 Month
  • Interval Timer PRO for 1 month$2.991 Month
Show 5 more
  • Interval Timer PRO for 1 month7 Days trial$2.991 Month
  • Interval Timer PRO - 30% OFF7 Days trial$15.001 Year
  • Interval Timer PRO - 25% OFF7 Days trial$16.491 Year
  • Interval Timer PRO for 1 year$21.991 Year
  • Tabata Timer PRO for 1 year7 Days trial$21.991 Year
One-time4
  • Interval Timer - no Ads$2.99
  • HIIT Timer PRO Forever 30% OFF$27.99
  • HIIT Timer PRO Forever 25% OFF$29.99
Show 1 more
  • Exercise Timer PRO Forever$39.99

Questions

Is Radical Trainers free?
Radical Trainers is free to download, with no in-app purchases.
Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Do Radical Trainers or Interval Timer have ads?
Interval Timer shows ads; Radical Trainers does not.
Which is updated more often, Radical Trainers or Interval Timer?
Radical Trainers ships an update every 3 months, and Interval Timer monthly. Most recently, Radical Trainers was updated on October 13, 2026 and Interval Timer on October 24, 2026.

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