Comparison

Interval Timer □ HIIT Timer vs Group Fitness Class Timer

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

Head to head
About

Interval Timer □ HIIT Timer

Create custom workout timers with adjustable intervals for exercise and rest. Track your progress with detailed history and statistics, and repeat past workouts easily. Enjoy audio cues without interrupting your music.

Highlights
  • Customizable intervals
  • Workout and rest timers
  • Voice or beep guides
  • Background audio support
  • Workout history and statistics
  • Repeat previous workouts
Features
Read full description

A simple and beautiful interval timer. 1. Drag to set your custom intervals for workout, rest, rounds, etc 2. Tap to start. Interval Timer doesn't interfere with your music or other apps: ∙ Listen to your music apps while you workout. ∙ Voice or beep guides for every workout. ∙ You can leave the app and still listen to the audio guides, in order to follow a workout you found online. And no need to manually record your workouts: ∙ Detailed history and statistics pages to track your progress. ∙ Repeat a previous workout from your history, so you don't need to set it again. If you have any ideas for how to improve the app, just tap "Contact Support' inside the app and let us know! We are always trying to improve Interval Timer This app includes an optional auto-renewable subscription (Premium Pass): Premium Pass beings with a free trial period, then an auto-renewable monthly subscription when trial ends. Payment will be charged to your Apple account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hrs before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your Apple Account Settings after purchase. Any unused portion of the free initial period will be forfeited when you purchase a subscription. Privacy Policy: https://float.support/interval-timer/privacy Terms of Use: https://float.support/interval-timer/terms

About

Group Fitness Class Timer

This app helps group fitness instructors plan and lead classes. It combines class structuring, an interval timer, and an exercise library into one tool. Instructors can create custom routines, track time, and even integrate music.

Highlights
  • Class planning and structuring
  • Interval timer with auto-advance
  • Library of 800+ exercises
  • Music integration
  • Apple Watch companion app
  • Custom exercise creation
Features
Read full description

More than a timer. Group Fit Studio is the all-in-one class planner and interval timer built for group fitness instructors. Design how your class flows, fill it with movements from our curated library of 900+ exercises, then press play to teach with your plan and timer working together. Whether you teach HIIT, Tabata, circuits, bootcamp, strength, yoga, Pilates, or barre, Group Fit Studio adapts to your format. Plan, timer, and music live in one app, and the class you build is exactly what the timer runs. GET STARTED IN MINUTES Pick a ready-made starter class and make it yours, or start from a blank page. Rehearse it as a live session before you teach it for real. ONE CLASS, ONE PLACE Each class gets one workspace: timed blocks, group intervals, and station rotations, plus warm-up and cool-down. Set the structure once, then refresh the moves week after week. PRESS PLAY Tap Start and the timer runs your class: work and rest countdowns, auto-advance, and skip forward or back on the fly. Pair an Apple Music playlist and it ducks under the countdown beeps. WEAR IT ON YOUR WRIST Your Apple Watch mirrors the live session, controls it from your wrist, and records the class as a workout in Health. BUILD YOUR LIBRARY 900+ exercises with step-by-step instructions and muscle targeting. Create your own and use them right away, or submit them to the shared catalog. MIX & MATCH WITH COMBOS Studio Combos put several exercises in one slot. Use the community's or build your own. BUILT FOR INSTRUCTORS - Ready-made starter classes to get you teaching in minutes - One workspace per class — structure and this week's exercises side by side - Studio Combos — pre-built or custom exercise groups for any slot - Timed, group, and station-based blocks — HIIT, Tabata, circuits, rounds, and more - Timed blocks with a sequence of moves — each gets its share of the clock, and the live timer calls out what's next - Suggested resistance for every move: Light, Medium, or Heavy, plus what to use, like 15 lb dumbbells or 2 white springs - Live session timer with work/rest countdowns, auto-advance, and interval navigation - Apple Watch companion with on-wrist session controls - Apple Music playlist pairing with auto-ducking countdown beeps - Exercise library with 900+ movements and muscle/equipment filters - Create your own exercises and use them immediately in your classes - Offline support — your classes and sessions work without a connection - Session history to track what you taught and when Designed by a group fitness instructor with 19 years of teaching. Group Fit Studio is free to try. A subscription unlocks unlimited classes. --- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Interval Timer □ HIIT Timer4 screens
Group Fitness Class Timer4 screens

Verdict

The call

The clearest difference is update cadence: Group Fitness Class Timer at every 2 days against Interval Timer □ HIIT Timer's every 5 weeks. Interval Timer □ HIIT Timer's advantage is ratings volume (87K vs 2) and iOS requirement (15.6 vs 26.0). On price, rating, ads and in-app purchases 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 □ HIIT Timer sells 5 in-app purchases, starting at $1.99 per month and Group Fitness Class Timer sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Group Fitness Class Timer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Interval Timer □ HIIT Timer has 87K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Interval Timer □ HIIT Timer ships an update every 5 weeks, Group Fitness Class Timer every 2 days. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
Interval Timer □ HIIT Timer versus Group Fitness Class Timer: the parameters behind the verdict, then further details
ParameterInterval Timer □ HIIT TimerGroup Fitness Class Timer
PriceFreeFree
Rating4.8 (87K ratings)5.0 (2 ratings) — better
Positive reviews60.8% of reviews—
Number of ratings87K — better2
Update frequencyEvery 5 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.6 — better26.0
Further details — not scored
Size34 MB39 MB
Age rating4+4+
DeveloperFloat Tech, LLCPaul Krause

Customer experience

Interval Timer □ HIIT Timer

All ratings85,854 ratings
Positive96.7%
Neutral1.2%
Negative2.1%
Written reviews1,839 reviews
Positive60.8%
Neutral6.2%
Negative33.0%

Group Fitness Class Timer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Interval Timer □ HIIT Timer

Reported bugs

3 issues
  • Timer not always accurate
  • Favorites/saved workouts feature not working
  • Inconsistent behavior when pausing/resuming

Requested features

3 requests
  • Ability to save and name custom workouts
  • More flexibility in exercise/rest time settings
  • Option to adjust volume of voice prompts

Group Fitness Class Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Interval Timer □ HIIT Timer

Subscriptions2
  • Premium Pass7 Days trial$1.991 Month
  • Premium Pass7 Days trial$2.991 Month
One-time3
  • Lifetime Pass$14.99
  • Lifetime Pass$19.99
  • Premium Forever Promo$29.99
2 purchases

Group Fitness Class Timer

Subscriptions2
  • Group Fit Studio Monthly$4.991 Month
  • Group Fit Studio Yearly$29.991 Year

Questions

Is Interval Timer □ HIIT Timer free?
Interval Timer □ HIIT Timer is free to download, with in-app purchases available.
Is Group Fitness Class Timer free?
Group Fitness Class Timer is free to download, with in-app purchases available.
Which has better reviews, Interval Timer □ HIIT Timer or Group Fitness Class Timer?
Group Fitness Class Timer is rated higher. Interval Timer □ HIIT Timer averages 4.8 out of 5 from 87K ratings, while Group Fitness Class Timer averages 5.0 from 2 ratings.
Do Interval Timer □ HIIT Timer or Group Fitness Class Timer have ads?
Neither Interval Timer □ HIIT Timer nor Group Fitness Class Timer shows ads.
Which is updated more often, Interval Timer □ HIIT Timer or Group Fitness Class Timer?
Interval Timer □ HIIT Timer ships an update every 5 weeks, and Group Fitness Class Timer every 2 days. Most recently, Interval Timer □ HIIT Timer was updated on October 23, 2026 and Group Fitness Class Timer on October 22, 2026.

Other comparisons