Comparison

WI Timer vs Interval Timer・HIIT Timer

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

Head to head
About

WI Timer

Features
Read full description

Timer optimized for exercise. Use the interval timer to run the treadmill at the gym and do Tabata exercises at home. Start the timer exercise now, the most efficient way to use the set time

About

Interval Timer・HIIT Timer

Features
Read full description

Fitness Timer is your all-in-one workout timer app designed to help you stay focused, train efficiently, and monitor your fitness progress. Whether you're doing HIIT, strength training, Tabata, cardio, or yoga, this interval timer makes it easy to set up custom workouts and follow them with precision. Perfect for both beginners and advanced athletes, Fitness Timer delivers a clean, distraction-free experience with customizable intervals, real-time audio cues, and heart rate tracking—all without interrupting your music or other apps. Interval Timer for Every Workout Fitness Timer is a powerful yet simple workout timer built for all types of interval training: * Create and customize workout intervals for active time, rest time, and number of rounds * Set up timers for HIIT, Tabata, EMOM, AMRAP, circuit training, or stretching * Get started in seconds with a clean drag-and-set interface * Clear audio or voice alerts guide you through each interval Use Fitness Timer to structure your home workouts, gym routines, or running intervals without hassle. Heart Rate Monitor Using Camera Now featuring built-in heart rate monitoring with no extra device required. Use your phone's camera and flashlight to measure your heart rate instantly: * Place your finger on the camera to measure your pulse * Monitor heart rate before, during, or after exercise * Useful for cardio training, recovery, and intensity tracking This feature turns your phone into a lightweight heart rate tracker to support safe, effective workouts. Fitness Tracking and History Fitness Timer automatically logs every session so you can track your progress and stay motivated: * View workout history and total training time * Repeat previous sessions with one tap * Analyze your training patterns in the statistics tab Information about the auto-renewable nature of the subscription. Confirm subscription: Payment will be charged to iTunes Account at confirmation of purchase. Manage subscriptions: Users can manage or unsubscribe in iTunes & App Store account management in the phone system settings. Auto-renewal: Apple iTunes account will be charged for renewal within 24-hours prior to the end of the current subscription period. To cancel the renewal, please turn off auto-renew manually at least 24-hours before the end of the period. No cancellation of the current subscription is allowed during the active subscription period. You can go to the Account Settings to cancel the renewal before the trial ends. The current free trial will be forfeited when you purchase a subscription to the premium version before the trial period ends. By using the app, you confirm that you acknowledge and accept our Privacy Policy and Terms of Service: Privacy Policy: https://sites.google.com/view/reva-desai/privacy Terms of Service: https://sites.google.com/view/reva-desai/terms You no longer need to manually record your workouts—everything is saved automatically.

Screenshots

WI Timer4 screens
Interval Timer・HIIT Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: WI Timer at none against Interval Timer・HIIT Timer's 2. Interval Timer・HIIT Timer's advantage is ads (none vs shown). On price, update cadence, 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. Interval Timer・HIIT Timer sells 2 in-app purchases, starting at $2.99 per month. WI Timer asks for nothing beyond the download.

UpkeepUpdate frequency

WI Timer ships an update every 2 days, Interval Timer・HIIT Timer every 4 days. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 4 level
WI Timer versus Interval Timer・HIIT Timer: the parameters behind the verdict, then further details
ParameterWI TimerInterval Timer・HIIT Timer
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 4 days
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.3 — better15.0
Further details — not scored
Size28 MB74 MB
Age rating4+4+
Developeryeeun seoReva Desai

In-app purchases

None

WI Timer

No in-app purchases

2 purchases

Interval Timer・HIIT Timer

Subscriptions2
  • Premium Monthly Access$2.991 Month
  • Premium Yearly Access$19.991 Year

Questions

Is WI Timer free?
WI Timer is free to download, with no in-app purchases.
Is Interval Timer・HIIT Timer free?
Interval Timer・HIIT Timer is free to download, with in-app purchases available.
Do WI Timer or Interval Timer・HIIT Timer have ads?
WI Timer shows ads; Interval Timer・HIIT Timer does not.
Which is updated more often, WI Timer or Interval Timer・HIIT Timer?
WI Timer ships an update every 2 days, and Interval Timer・HIIT Timer every 4 days. Most recently, WI Timer was updated on October 5, 2026 and Interval Timer・HIIT Timer on October 6, 2026.

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