Comparison

Interval Timer vs HIIT Workout Timer by Zafapp

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

Head to head
About

Interval Timer

This app helps you manage workout intervals with customizable work and rest periods. It runs in the background and allows music playback, with options to save settings and share progress. Integrates with Apple Health for heart rate monitoring.

Highlights
  • Customizable sets, intervals, and rest times
  • Runs in background and with screen locked
  • Music playlist integration
  • Save settings as templates
  • Apple Health integration for heart rate
  • Post workouts to social media
Features
Read full description

***Free and reliable. Perfect for use at home, at the track or in the gym. We’re proud to introduce this handy little app that helps you keep track of your work and rest periods during workouts. Whether your into cycling, running, lifting weights, exercise, workout, stretching, boxing, MMA or HIT, this interval timer will prove to be an invaluable asset to you. Running foreground, background or with device locked, this reliable app allows you specify an overall time as well as program High/Low intensity interval and rest time between sets. Produced by Polycents! Key Features: - Customizable sets, high/low intensity interval and rest for your own need - Retina display, iOS4 and multitasking - Continue to run even when screen is locked - Play your song or playlist during your workout - Post your workout to Facebook or Twitter - Save settings as templates Customizable Features: - Number of Sets - Countdown Time - Set Time - Low Interval time - High Interval time - Rest Time - First Interval (low or high) - Sound Volume - Timer Sounds - Auto Lock - Vibrate - Pause during Rest - Playlist - New Each Set APPLE HEALTH: -Interval Timer can use Apple Health to show heart rate in Apple Watch App. # Subscription Details # - Monthly and annual subscriptions are available. - Payment will be charged to your iTunes account at confirmation of purchase. - Your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period. - Automatic renewals will be charged at the same price you were originally charged for the subscription. - Subscriptions can be managed by going to Account Settings on the App Store after purchase. Terms of Use: https://www.iubenda.com/terms-and-conditions/18915396 Privacy Policy: https://www.iubenda.com/privacy-policy/18915396

About

HIIT Workout Timer by Zafapp

This app helps you create custom interval training routines with adjustable sets, rounds, and exercise times. It also tracks your workout history, calculates calorie burn, and integrates with Apple Watch for heart rate monitoring and workout control.

Highlights
  • Custom interval timers (HIIT, Tabata)
  • Reps and weight logging
  • Workout routine planner
  • Calorie burn calculation
  • Workout history and analysis
  • Apple Watch integration
  • Background music control
Features
Read full description

More than one trillion calories are burned using this app! INTERVAL TIMER (HIIT AND TABATA) & REPS AND WEIGHT LOGGER • Custom number of Sets and Rounds, and Exercise, Rest, Warm Up and Cool Down times • High intensitiy - Low intensity time reminders • Set Reps and Weight for each exercise (e.g. 20 squats with 25 lbs) • Text-to-speech interval change sound • Also perfect for weight lifting exercises WORKOUT ROUTINE & PLANNER • Set workout days for each workout plan • Create routines with 30+ exercises including squats, crunches and weight lifting... • Get reminders on workout day and time • Add more exercises with custom exercise naming CALORIE COUNTER & WORKOUT HISTORY • Calorie burns calcuated for each workout session • Workout history with daily, weekly, and monthly highlights • Detailed analyzes of your last workouts APPLE WATCH APP & HEART RATE MONITOR • Start and control workouts right on your watch • Monitor your heart rate coming from your Apple Watch • Log your workout history to Apple Health BACKGROUND MUSIC WITH VOLUME CONTROL • Listen and control Apple Music songs right on the app • Control background music volume (50%-100%)

Screenshots

Interval Timer4 screens
HIIT Workout Timer by Zafapp4 screens

Verdict

The call

Interval Timer and HIIT Workout Timer by Zafapp both sit at 4.5 stars, but that hides the real split: 73% of Interval Timer's written reviews are positive against 40% of HIIT Workout Timer by Zafapp's. Interval Timer also leads on ratings volume (19K vs 15) and iOS requirement (13.0 vs 15.0). On price, rating, update cadence and ads 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 6 in-app purchases, starting at $0.99 per month and HIIT Workout Timer by Zafapp sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Interval Timer against 4.5 for HIIT Workout Timer by Zafapp. That said, the two scores are not equally well evidenced: Interval Timer has 19K ratings behind it against 15, so its average is the more settled of the two. Written reviews are what separate them: 73% of Interval Timer's written reviews are positive against 40% of HIIT Workout Timer by Zafapp's.

UpkeepUpdate frequency

Interval Timer ships an update every 9 days, HIIT Workout Timer by Zafapp every 3 weeks. The most recent releases landed on September 29, 2026 and August 23, 2026 respectively.

Scorecard3 real differences · 7 level
Interval Timer versus HIIT Workout Timer by Zafapp: the parameters behind the verdict, then further details
ParameterInterval TimerHIIT Workout Timer by Zafapp
PriceFreeFree
Rating4.5 (19K ratings)4.5 (15 ratings)
Positive reviews72.9% of reviews — better40.0% of reviews
Number of ratings19K — better15
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, iPod, Apple Watch
Requires iOS13.0 — better15.0
Further details — not scored
Size143 MB96 MB
Age rating4+4+
DeveloperNEO PIXEL LABS PTE. LTD.Cuneyt Zafer

Customer experience

Interval Timer

All ratings19,032 ratings
Positive88.4%
Neutral3.3%
Negative8.3%
Written reviews1,592 reviews
Positive72.9%
Neutral5.8%
Negative21.4%

HIIT Workout Timer by Zafapp

All ratings15 ratings
Positive93.3%
Neutral0.0%
Negative6.7%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

Bugs and requests

Interval Timer

Reported bugs

3 issues
  • Ads block functionality
  • App freezes or crashes
  • Timer doesn't work in background

Requested features

5 requests
  • Add notes to workouts
  • Provide workout history and analytics
  • Allow syncing with Apple Health
  • Improve Apple Watch integration
  • Add more customization options

HIIT Workout Timer by Zafapp

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Interval Timer

Subscriptions6
  • Plus - 1 Month$0.991 Month
  • Premium - 1 Month$1.991 Month
  • Plus - 1 Month$1.991 Month
Show 3 more
  • Premium - 1 Month$2.991 Month
  • Plus - 1 Year2 variants$4.991 Year
  • Premium - 1 Year7 Days trial2 variants$9.991 Year
3 purchases

HIIT Workout Timer by Zafapp

One-time3
  • Pro Version$1.99
  • Pro Version$10.99
  • Pro Version$11.99

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is HIIT Workout Timer by Zafapp free?
HIIT Workout Timer by Zafapp is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or HIIT Workout Timer by Zafapp?
Interval Timer and HIIT Workout Timer by Zafapp are both rated 4.5 out of 5 on the App Store, from 19K and 15 ratings respectively.
Do Interval Timer or HIIT Workout Timer by Zafapp have ads?
Both Interval Timer and HIIT Workout Timer by Zafapp show ads.
Which is updated more often, Interval Timer or HIIT Workout Timer by Zafapp?
Interval Timer ships an update every 9 days, and HIIT Workout Timer by Zafapp every 3 weeks. Most recently, Interval Timer was updated on September 29, 2026 and HIIT Workout Timer by Zafapp on August 23, 2026.

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