Comparison

Interval Timer □ HIIT Timer vs Justfit

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

Justfit

This interval timer app allows users to create custom workout routines like Tabata, HIIT, or boxing circuits with customizable intervals and voice announcements. It offers background operation, Apple Watch integration, and detailed workout history.

Highlights
  • Unlimited custom intervals, sets, and rest periods
  • Voice announcements and countdowns
  • Background operation with large display
  • Apple Watch app and Lock Screen Live Activity
  • Workout history and weekly insights
  • Widgets and Siri integration
Features
Read full description

Justfit is the interval timer that stays out of your way. Build a circuit, Tabata, HIIT or boxing timer in seconds and let it run in the background with big, readable digits. WHAT YOU GET • Unlimited intervals, sets and rest — name and color each one • Voice announcements and 3-2-1 countdown, so you never look at the screen • Sounds that cut through your music, then get out of the way • Apple Watch app and complication, Live Activity on the Lock Screen • History, streaks and weekly insights • Widgets and Siri: "Start Tabata in Justfit" FREE VS PRO Free: 3 timers, all basic sounds, 7-day history. Pro unlocks unlimited timers, templates, premium sounds and full insights — monthly, yearly or one-time. PRIVACY No account, no tracking. Your timers stay on your device and, if you choose, in your iCloud. Terms of Use (EULA): https://www.nahitfidanci.com/justfit/terms Privacy Policy: https://www.nahitfidanci.com/justfit/privacy

Screenshots

Interval Timer □ HIIT Timer4 screens
Justfit4 screens

Verdict

The call

Interval Timer □ HIIT Timer and Justfit both sit at 4.8 stars, but that hides the real split: 100% of Justfit's written reviews are positive against 61% of Interval Timer □ HIIT Timer's. Justfit also leads on update cadence (every 3 days vs every 5 weeks). Interval Timer □ HIIT Timer's advantage is ads (none vs shown) and ratings volume (87K vs 1). On price, rating, 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 Justfit sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Justfit 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 1, 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 100% of Justfit's.

UpkeepUpdate frequency

Interval Timer □ HIIT Timer ships an update every 5 weeks, Justfit every 3 days. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Interval Timer □ HIIT Timer versus Justfit: the parameters behind the verdict, then further details
ParameterInterval Timer □ HIIT TimerJustfit
PriceFreeFree
Rating4.8 (87K ratings)5.0 (1 ratings) — better
Positive reviews60.7% of reviews100.0% of reviews — better
Number of ratings87K — better1
Update frequencyEvery 5 weeksEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.615.0 — better
Further details — not scored
Size34 MB116 MB
Age rating4+4+
DeveloperFloat Tech, LLCFerda Nahit Fidanci

Customer experience

Interval Timer □ HIIT Timer

All ratings85,854 ratings
Positive96.7%
Neutral1.2%
Negative2.1%
Written reviews1,846 reviews
Positive60.7%
Neutral6.2%
Negative33.1%

Justfit

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
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

Justfit

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
5 purchases

Justfit

Subscriptions3
  • Monthly$2.991 Month
  • Annual7 Days trial$14.991 Year
  • Justfit Pro Annual1 Year trial$14.991 Year
One-time2
  • Justfit Pro Lifetime$22.99
  • Lifetime access$29.99

Questions

Is Interval Timer □ HIIT Timer free?
Interval Timer □ HIIT Timer is free to download, with in-app purchases available.
Is Justfit free?
Justfit is free to download, with in-app purchases available.
Which has better reviews, Interval Timer □ HIIT Timer or Justfit?
Justfit is rated higher. Interval Timer □ HIIT Timer averages 4.8 out of 5 from 87K ratings, while Justfit averages 5.0 from 1 ratings.
Do Interval Timer □ HIIT Timer or Justfit have ads?
Justfit shows ads; Interval Timer □ HIIT Timer does not.
Which is updated more often, Interval Timer □ HIIT Timer or Justfit?
Interval Timer □ HIIT Timer ships an update every 5 weeks, and Justfit every 3 days. Most recently, Interval Timer □ HIIT Timer was updated on November 5, 2026 and Justfit on November 3, 2026.

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