Comparison

Interval Timer □ HIIT Timer vs Restrr

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

Easily set up custom workout intervals with a simple drag-and-tap interface. This app provides audio cues and detailed history to track your fitness progress, even while listening to music.

Highlights
  • Customizable intervals
  • Drag-and-tap interface
  • Voice and beep guides
  • Background audio support
  • Detailed workout history
  • 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 work out. ∙ 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 offers an optional auto-renewable subscription, Premium Pass (monthly), and a one-time Lifetime Pass. Premium Pass starts with a 1-week free trial for eligible new subscribers, then renews automatically every month at the price shown in the app until you cancel. Payment is charged to your Apple Account when you confirm the purchase or, with a free trial, when the trial ends. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for the renewal within 24 hours before the end of the current period. You can manage the subscription and turn off auto-renewal at any time in your Apple Account settings. Cancelling stops the next renewal, and Premium stays active until the end of the period you've paid for. Any unused part of a free trial ends when you buy a subscription. Privacy Policy: https://float.support/interval-timer/privacy Terms of Use: https://float.support/interval-timer/terms

About

Restrr

Optimize your strength training and HIIT workouts with a smart rest countdown and automatic set counter. Stay focused with customizable notifications and live activity integration. Train more efficiently and effectively.

Highlights
  • Smart rest countdown
  • Automatic set counter
  • Live Activities & Dynamic Island integration
  • Customizable notifications
  • Workout optimization
Read full description

Tired of guessing your rest periods and losing track of sets? Gym Timer is the essential tool for every serious athlete and gym-goer. Designed to keep your strength training, muscle building, and HIIT workouts on track, our app ensures you make the most of every second. Stop wasting time and start training with purpose. Features That Optimize Your Workout - Smart Rest Countdown: Our clear, easy-to-read rest countdown ensures you hit your next set at the perfect time, every time. - Automatic Set Counter: Focus on your reps, not your count. The app automatically tracks your sets, making your workout seamless. - Live Activities & Dynamic Island: Stay connected to your workout timer directly from your lock screen or Dynamic Island. A quick glance is all you need. - Customizable Notifications: Get notified with a sound or vibration the moment your rest period is over. You'll never miss a beat. Whether you're a beginner or a seasoned lifter, the Gym Rest Timer is the personal coach you've been waiting for. It's more than just a timer—it's your key to a more efficient, focused, and effective workout. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Interval Timer □ HIIT Timer4 screens
Restrr4 screens

Verdict

The call

The clearest difference is review sentiment: Interval Timer □ HIIT Timer at 61% against Restrr's 0%. Interval Timer □ HIIT Timer also leads on rating (4.8 vs 3.0) and ratings volume (88K vs 2). On price, ads, in-app purchases and monetization model 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 Restrr sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Interval Timer □ HIIT Timer holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Interval Timer □ HIIT Timer has 88K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 61% of Interval Timer □ HIIT Timer's written reviews are positive against 0% of Restrr's.

UpkeepUpdate frequency

Interval Timer □ HIIT Timer ships an update every 5 weeks, Restrr every 3 months. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
Interval Timer □ HIIT Timer versus Restrr: the parameters behind the verdict, then further details
ParameterInterval Timer □ HIIT TimerRestrr
PriceFreeFree
Rating4.8 (88K ratings) — better3.0 (2 ratings)
Positive reviews60.6% of reviews — better0.0% of reviews
Number of ratings88K — better2
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.5
Further details — not scored
Size21 MB19 MB
Age rating4+4+
DeveloperFloat Tech, LLCMatija Gunther

Customer experience

Interval Timer □ HIIT Timer

All ratings87,539 ratings
Positive96.7%
Neutral1.2%
Negative2.1%
Written reviews1,851 reviews
Positive60.6%
Neutral6.2%
Negative33.2%

Restrr

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Restrr

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
1 purchases

Restrr

One-time1
  • Lifetime$3.99

Questions

Is Interval Timer □ HIIT Timer free?
Interval Timer □ HIIT Timer is free to download, with in-app purchases available.
Is Restrr free?
Restrr is free to download, with in-app purchases available.
Which has better reviews, Interval Timer □ HIIT Timer or Restrr?
Interval Timer □ HIIT Timer is rated higher. Interval Timer □ HIIT Timer averages 4.8 out of 5 from 88K ratings, while Restrr averages 3.0 from 2 ratings.
Do Interval Timer □ HIIT Timer or Restrr have ads?
Neither Interval Timer □ HIIT Timer nor Restrr shows ads.
Which is updated more often, Interval Timer □ HIIT Timer or Restrr?
Interval Timer □ HIIT Timer ships an update every 5 weeks, and Restrr every 3 months. Most recently, Interval Timer □ HIIT Timer was updated on November 11, 2026 and Restrr on November 4, 2026.

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