Comparison

Rest Timer vs HIIT Timer

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

Head to head
About

Rest Timer

This app provides a simple countdown timer for rest periods during workouts. It features customizable sounds, notification-based restarts, and dynamic display support. Easily manage your workout intervals without interrupting your music or unlocking your phone.

Highlights
  • One-tap timer start
  • Customizable rest periods
  • Plays music during countdown
  • Restart from notification
  • Dynamic Island and Live Activity support
  • Adjust timer while running
Features
Read full description

Free app. No ads. Start the timer with one tap. Keeps playing music after a short alarm sound. Restart the timer from the notification. Dynamic Island and Live Activity supported. This is the simplest countdown timer out there, with a set of convenience features you can't find in any other similar app. It's primarily used for timing rest periods during a strength training workout. It works great in the gym, at home, and outdoors. Let your phone notify you when it's time to start the next set or exercise. *** Instructions *** Start the countdown by pressing one of the 9 timer buttons. Reset it if you don't need it anymore. Press'n'hold the button to change its timer duration. === Important! === Please make sure to allow the app to send you notifications, otherwise, you might not hear sound warnings, and it won't work with the screen locked. *** What makes this app better than the others? *** You can change the timer duration while the timer is already running. The app recalculates the remaining time and keeps the time that has already passed. Sometimes there is not enough energy in the tank, and you need an extra minute to rest. Or you started the wrong timer and want to change it to the correct one. The app uses carefully selected custom sounds that play nicely with your workout music. They are noticeable enough not to miss them but still easy on your ears. A gentle sound warning signals you to start preparing for the next set (for time intervals of 30 seconds and higher). Another more distinct sound follows when the time is up. When you're done with the set, you can restart the timer from the notification without unlocking the screen! No need to think about how long your rest time is after each set. *** FAQ *** Q. I can't hear the sound notifications. What's wrong? A. Please make sure that you have allowed the app to send you notifications. Go to Settings App -> Notifications -> find WaitWaitGo! -> Allow notifications and Sounds need to be On. Also, make sure that the silent switch on the phone is off, and if you have any iOS focus modes active, make sure they allow notifications from WaitWaitGo!. As a last resort, go to Settings -> Sounds and make sure that the Ringer And Alerts volume slider is set to some higher value.

About

HIIT Timer

This app helps you create and follow custom interval training routines for various fitness activities. It provides clear visual cues, voice announcements, and haptic feedback to keep you focused. Track your progress with a detailed dashboard of completed workouts and training streaks.

Highlights
  • Customizable workout creation
  • Visual and audio cues
  • Haptic feedback
  • Progress tracking dashboard
  • Background audio support
  • Pause/continue functionality
Features
Read full description

Train with precision. HIIT Timer is a simple and powerful interval timer built for HIIT, Tabata, circuit training, cardio, boxing, and other interval-based workouts. Set your work and rest times, choose your rounds, and start training. Clear visual cues and easy-to-follow timers help you stay focused on your workout instead of watching the clock. KEY FEATURES • Custom Intervals Set your own work time, rest time, number of rounds, and training structure. • Built for HIIT & Tabata Perfect for high-intensity interval training, Tabata sessions, circuit workouts, cardio, and more. • Clear Workout Timer See your current interval, remaining time, and workout progress at a glance. • Flexible Training Use it at the gym, at home, outdoors, or anywhere you train. • Great for Different Workouts Use HIIT Timer for bodyweight workouts, strength circuits, boxing sessions, cardio intervals, and other timed training. • Simple & Focused No complicated setup. Create your workout, start the timer, and focus on training. CREATE YOUR OWN INTERVALS Whether you prefer: • 20 seconds work / 10 seconds rest • 30 seconds work / 30 seconds rest • 40 seconds work / 20 seconds rest • 45 seconds work / 15 seconds rest You can create an interval structure that fits your workout. IDEAL FOR • HIIT • Tabata • Circuit training • Cardio intervals • Boxing workouts • Bodyweight training • Strength circuits • Home workouts • Gym workouts Stop adjusting a basic stopwatch between every set. Build your intervals once and let HIIT Timer guide you through the workout. Download HIIT Timer and make every interval count. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pulseset-api.pulseset-timer.workers.dev/privacy

Screenshots

Rest Timer3 screens
HIIT Timer4 screens

Verdict

The call

The clearest difference is review sentiment: Rest Timer at 100% against HIIT Timer's 0%. Rest Timer also leads on rating (4.9 vs 3.0) and in-app purchases (none vs 2). HIIT Timer's advantage is update cadence (every 9 days vs every 2 months). On price, ads, device support and iOS requirement 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. HIIT Timer sells 2 in-app purchases, starting at $2.99 per month. Rest Timer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Rest Timer holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Rest Timer has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Rest Timer's written reviews are positive against 0% of HIIT Timer's.

UpkeepUpdate frequency

Rest Timer ships an update every 2 months, HIIT Timer every 9 days. The most recent releases landed on September 26, 2026 and September 19, 2026 respectively.

Scorecard6 real differences · 4 level
Rest Timer versus HIIT Timer: the parameters behind the verdict, then further details
ParameterRest TimerHIIT Timer
PriceFreeFree
Rating4.9 (11 ratings) — better3.0 (1 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings11 — better1
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size20 MB32 MB
Age rating4+4+
DeveloperSrdan Stanic浩祖 彭

Customer experience

Rest Timer

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HIIT Timer

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Rest Timer

No in-app purchases

2 purchases

HIIT Timer

Subscriptions1
  • Monthly Premium7 Days trial$2.991 Month
One-time1
  • Lifetime Pass$19.99

Questions

Is Rest Timer free?
Rest Timer is free to download, with no in-app purchases.
Is HIIT Timer free?
HIIT Timer is free to download, with in-app purchases available.
Which has better reviews, Rest Timer or HIIT Timer?
Rest Timer is rated higher. Rest Timer averages 4.9 out of 5 from 11 ratings, while HIIT Timer averages 3.0 from 1 ratings.
Do Rest Timer or HIIT Timer have ads?
Neither Rest Timer nor HIIT Timer shows ads.
Which is updated more often, Rest Timer or HIIT Timer?
Rest Timer ships an update every 2 months, and HIIT Timer every 9 days. Most recently, Rest Timer was updated on September 26, 2026 and HIIT Timer on September 19, 2026.

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