Comparison

Interval 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

Features
Read full description

Your ultimate workout companion for HIIT, Tabata, circuit training, and any interval-based workout. Designed to be simple, powerful, and distraction-free — so you can focus on your training, not your phone. Set up your workout in seconds. Customize every detail of your interval timer with just a few taps: set your Work and Rest durations, number of Exercises, Rounds, and Round Reset time. The app instantly calculates your total workout time so you always know what you're getting into. Stay focused while you train. A bold, full-screen countdown with a circular progress ring keeps you on track. Always know which phase you're in — Work or Rest — along with your current exercise, round, and total time remaining. Audio cues alert you to every transition so you never have to glance at the screen. Track your consistency. The built-in Workout History tracks your Total Workouts, Total Time, and current Streak. A color-coded calendar lets you see your training days at a glance, and tapping any date reveals a detailed breakdown of every session — including work/rest intervals, exercises, and rounds. Build the habit. Watch your streak grow day by day. Nothing beats seeing a wall of green on your calendar. Why you'll love it: - Clean, intuitive dark-themed interface - Fully customizable Work, Rest, Rounds, Exercises & Round Reset - Large, glanceable timer with circular progress indicator - Audio cues for seamless hands-free transitions - Pause, resume & skip controls mid-workout - Workout history with calendar view & daily streaks This app offers subscription plans. If you choose to subscribe, your payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current billing period. You can manage or cancel your subscription at any time in your App Store account settings. https://sites.google.com/view/polyhootprivacypolicy/privacy-policy https://sites.google.com/view/polyhootprivacypolicy/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 Timer4 screens
Group Fitness Class Timer4 screens

Verdict

The call

The clearest difference is iOS requirement: Interval Timer at 13.0 against Group Fitness Class Timer's 26.0. On price, update cadence, 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 sells 2 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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 8, 2026 and October 22, 2026 respectively.

Scorecard1 real difference · 8 level
Interval Timer versus Group Fitness Class Timer: the parameters behind the verdict, then further details
ParameterInterval TimerGroup Fitness Class Timer
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.0 — better26.0
Further details — not scored
Size55 MB39 MB
Age rating4+4+
DeveloperPratik KhomanePaul Krause

In-app purchases

2 purchases

Interval Timer

Subscriptions1
  • PRO ACCESS$1.991 Month
One-time1
  • Lifetime Access$12.99
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 free?
Interval 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.
Do Interval Timer or Group Fitness Class Timer have ads?
Neither Interval Timer nor Group Fitness Class Timer shows ads.
Which is updated more often, Interval Timer or Group Fitness Class Timer?
Interval Timer ships an update every 2 days, and Group Fitness Class Timer every 2 days. Most recently, Interval Timer was updated on October 8, 2026 and Group Fitness Class Timer on October 22, 2026.

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