Comparison

Interval Timer □ HIIT Timer vs Sezzy Timer

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

Sezzy Timer

This app provides pre-formatted workout timers for various fitness routines, including HIIT and Pilates. It offers visual and auditory cues to guide users through exercises and rest periods, allowing for efficient and motivating workouts. Users can also create custom timers and listen to music simultaneously.

Highlights
  • Eleven unique pre-formatted timers
  • Custom timer creation
  • Visual and auditory cues
  • Background operation with music
  • Pause and play functionality
  • Next exercise display
Features
Read full description

The perfect pre-formatted timer app that allows you to get straight into your workout with the click of a button! Whether you're smashing out a HIIT workout, pilates or your own custom circuit, the Sezzy Timer has ELEVEN unique timers to use so your workouts are always efficient, fun and on track! Each timer uses visual and auditory cues to ensure you know what exercise you're up to! You can also listen to your tunes simultaneously as the timer to stay in the zone and maintain motivation. Timers to chose from: 1. Sweaty Shredder 2. Toning Power 3. 10 Minute Blaster 4. 15 Minute Burner 5. AMRAP 6. Custom Timer 7. 30 Min Pilates 8. HIIT Pilates 9. 45/15 Sweat 10. 10 Min Movement 11. Express Cardio All Timers Include: - Visual cues including rest, sets, circuit, exercises, supersets or rounds (depending what kind of workout you’re doing) - Auditory cues allowing you to step away from your phone and complete the workout purely through listening. Sezzy Timer specifies what round, exercise, set or rest period you’re up to. It will also help count you down until your next movement - Works in the background of your phone allowing you to listen to music and smash through your workout, while hearing cues from the timer app - Custom option to create your own personalised workout - Pause, and play option - Display of what is coming up next in your workout to better prepare your body. The Sezzy Timer app is simple, quick and easy to use and requires little to no preparation. Setting up timers and organising rounds, exercises and sets can often be confusing and tricky, so I’m here to take the stress out of your workout. Follow my cues and you’re on your way to a successful, sweaty, soul fulfilling workout!

Screenshots

Interval Timer □ HIIT Timer4 screens
Sezzy Timer4 screens

Verdict

The call

The clearest difference is price: Interval Timer □ HIIT Timer at Free against Sezzy Timer's $1.99. Interval Timer □ HIIT Timer also leads on rating (4.8 vs 3.9) and ratings volume (86K vs 100). Sezzy Timer's advantage is in-app purchases (none vs 5) and chart position (#59 vs unranked). On ads and device support 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

Interval Timer □ HIIT Timer is free to download; Sezzy Timer costs $1.99 up front. Interval Timer □ HIIT Timer sells 5 in-app purchases, starting at $1.99 per month. Sezzy Timer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Interval Timer □ HIIT Timer holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Interval Timer □ HIIT Timer has 86K ratings behind it against 100, 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 50% of Sezzy Timer's.

UpkeepUpdate frequency

Interval Timer □ HIIT Timer ships an update every 5 weeks, Sezzy Timer every 3 months. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

Scorecard9 real differences · 2 level
Interval Timer □ HIIT Timer versus Sezzy Timer: the parameters behind the verdict, then further details
ParameterInterval Timer □ HIIT TimerSezzy Timer
PriceFree — better$1.99
Rating4.8 (86K ratings) — better3.9 (100 ratings)
Positive reviews60.7% of reviews — better50.0% of reviews
Number of ratings86K — better100
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
Best chart rank—#59 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size34 MB22 MB
Age rating4+4+
DeveloperFloat Tech, LLCSarah's Day Pty Limited

Customer experience

Interval Timer □ HIIT Timer

All ratings85,854 ratings
Positive96.7%
Neutral1.2%
Negative2.1%
Written reviews1,810 reviews
Positive60.7%
Neutral6.2%
Negative33.1%

Sezzy Timer

All ratings100 ratings
Positive66.0%
Neutral14.0%
Negative20.0%
Written reviews106 reviews
Positive50.0%
Neutral18.9%
Negative31.1%

User reviews

Interval Timer □ HIIT Timer

From 86K App Store ratings

What we love

  • 🚀 Simple and easy to use
  • 👍 Customizable settings
  • 🚀 Intuitive interface
  • 🚀 Effective for HIIT workouts
  • 👍 Helpful voice prompts

Room to improve

  • 🔒 Requires subscription after limited free use
  • 🐛 Music volume issues with voice prompts
  • 🐛 Inconsistent behavior when switching apps
  • 🐛 Lack of final workout notification

Sezzy Timer

From 100 App Store ratings

What we love

  • 👍 Simple and intuitive user interface
  • 🎵 Works seamlessly with background music (Spotify, Apple Music)
  • 🎤 Sarah's voice guidance is motivating and helpful
  • 💪 Perfect companion for Sarah's ebook workouts
  • ⏱️ Eliminates need to manually set up interval timers

Room to improve

  • 🐛 Timer frequently crashes or stops mid-workout
  • 🐛 Timer pauses when switching between apps
  • ⏰ Timer accuracy issues (runs slow or fast)
  • ❌ No back button to return to main menu
  • ❌ Cannot skip ahead if timer accidentally exits

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

Sezzy Timer

Reported bugs

14 issues
  • Timer stops or crashes mid-workout
  • Timer pauses when switching to other apps
  • Timer accuracy issues (runs faster or slower than expected)
  • App crashes when phone screen locks
  • Timer resets if accidentally navigate away
Show 9 more
  • Sarah's voice cuts off mid-announcement
  • Sarah's voice too quiet to hear over music
  • Screen doesn't rotate to landscape mode
  • Custom timer setup is confusing and unclear
  • Timer skips breaks or jumps between sections
  • App freezes or becomes unresponsive
  • Music stops playing when app opens
  • Countdown timer numbers partially hidden
  • Next exercise/round indicators reversed at bottom of screen

Requested features

13 requests
  • Apple Watch app support
  • Add 20-second rest period option
  • Save custom timer settings for reuse
  • Skip/fast-forward button to jump between sets
  • Back button to return to main menu
Show 8 more
  • Display exercise names instead of just numbers
  • Summary screen showing total workout time and circuits completed
  • Progress tracking and calendar logging
  • More rest/workout time increment options
  • Ability to skip rounds if timer glitches
  • Better custom timer UI with clearer instructions
  • Music volume ducking when Sarah speaks
  • Workout total time display for custom timers

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
None

Sezzy Timer

No in-app purchases

Questions

Is Interval Timer □ HIIT Timer free?
Interval Timer □ HIIT Timer is free to download, with in-app purchases available.
Is Sezzy Timer free?
Sezzy Timer costs $1.99, with no in-app purchases.
Which has better reviews, Interval Timer □ HIIT Timer or Sezzy Timer?
Interval Timer □ HIIT Timer is rated higher. Interval Timer □ HIIT Timer averages 4.8 out of 5 from 86K ratings, while Sezzy Timer averages 3.9 from 100 ratings.
Do Interval Timer □ HIIT Timer or Sezzy Timer have ads?
Neither Interval Timer □ HIIT Timer nor Sezzy Timer shows ads.
Which is updated more often, Interval Timer □ HIIT Timer or Sezzy Timer?
Interval Timer □ HIIT Timer ships an update every 5 weeks, and Sezzy Timer every 3 months. Most recently, Interval Timer □ HIIT Timer was updated on September 25, 2026 and Sezzy Timer on September 23, 2026.

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