Comparison

Interval Timer vs IntervalTimer Duo

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

Head to head
About

Interval Timer

Easily set custom intervals for workouts and rest periods with this intuitive timer. Enjoy beep guides and seamless music playback during your sessions. Track your progress with detailed history and statistics.

Highlights
  • Customizable intervals
  • Workout and rest timers
  • Beep guides
  • Music playback compatibility
  • Workout history
  • Progress statistics
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. ∙ Beep guides for every workout. And no need to manually record your workouts: ∙ Detailed history and statistics pages to track your progress. ∙ Repeat a workout from your preset, so you don't need to recreate it again. This is a free app and your support means a lot. If you have any ideas for how to improve the app, just tap "Request Feature' inside the app and let us know! We are always trying to improve Interval Timer.

 Privacy Policy: https://robzapps.com/privacy Terms of Use: https://robzapps.com/terms

About

IntervalTimer Duo

Features
Read full description

IntervalTimer Duo is a simple and easy-to-use interval timer app for iPhone and iPad that runs up to 10 timers in sequence. 【Key Uses】 • HIIT (High-Intensity Interval Training) • Pomodoro Technique (work and break cycles) • Cooking timing management • Stretching and yoga routines • Study and rest cycle management 【Features】 • Run your timers back to back, automatically • Build workouts with up to 10 timers — warm up, work, rest, cool down (Premium from the third timer) • Each timer adjustable from 1 second to 60 minutes • Preset feature to save and instantly recall favorite settings (1 preset free; unlimited presets: Premium) • Share presets via link — let friends import your timer setup in one tap • Set counter to track progress toward your target sets (Premium) • Audio notifications and vibration when timers end • Live Activity shows remaining time on Lock Screen and Dynamic Island (Premium) • Customizable alert sounds (extra sounds: Premium) • Simple and intuitive interface 【Preset Sharing】 • Share your favorite timer configurations via link • Recipients can import presets with a single tap • Sync routines with your team or workout partners 【Ease of Use】 • One-tap start, pause, and reset • Quick time setting with preset buttons • Visual circular progress bars show remaining time • Second timer can be enabled/disabled as needed • Set counter tracks completed sets toward your goal 【Free & Premium】 The app is free to download and use. After installing, all premium features are unlocked for a 14-day free trial. When the trial ends, premium features require a one-time purchase (pay once, use forever) — a Universal Purchase shared between iOS and macOS. Free forever: • Two timers running alternately (1 second to 60 minutes each) • One saved preset • Basic alert sounds • Audio and vibration notifications when timers end • Circular progress bar • Preset sharing via link (sending and receiving are both free) Premium (one-time purchase, or during the free trial): • A third timer and beyond (up to 10, each with its own name and sound) • Unlimited presets • Set counter • Additional premium alert sounds • Live Activity on Lock Screen and Dynamic Island 【Compatibility】 • iPhone and iPad • Available in English, Japanese, French, German, and Spanish 【Universal Purchase】 If you own the macOS version, you can use the iOS version at no additional cost. A simple yet fully-featured interval timer app that's perfect for any timing needs. Privacy Policy: https://techback.info/interval-timer/ios/privacy-policy.html Terms of Use (EULA): https://techback.info/interval-timer/ios/terms-of-use.html

Screenshots

Interval Timer3 screens
IntervalTimer Duo4 screens

Verdict

The call

The clearest difference is in-app purchases: Interval Timer at none against IntervalTimer Duo's 1. Interval Timer also leads on iOS requirement (16.0 vs 26.1). IntervalTimer Duo's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 17 months). On price 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. IntervalTimer Duo sells 1 one-off in-app purchase. Interval Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Interval Timer ships an update every 17 months, IntervalTimer Duo every 3 weeks. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 4 level
Interval Timer versus IntervalTimer Duo: the parameters behind the verdict, then further details
ParameterInterval TimerIntervalTimer Duo
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 17 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS16.0 — better26.1
Further details — not scored
Size25 MB10 MB
Age rating4+4+
DeveloperVignesh Viswanathankosuke konuma

In-app purchases

None

Interval Timer

No in-app purchases

1 purchases

IntervalTimer Duo

One-time1
  • Full Version$2.99

Questions

Is Interval Timer free?
Interval Timer is free to download, with no in-app purchases.
Is IntervalTimer Duo free?
IntervalTimer Duo is free to download, with in-app purchases available.
Do Interval Timer or IntervalTimer Duo have ads?
Interval Timer shows ads; IntervalTimer Duo does not.
Which is updated more often, Interval Timer or IntervalTimer Duo?
Interval Timer ships an update every 17 months, and IntervalTimer Duo every 3 weeks. Most recently, Interval Timer was updated on October 6, 2026 and IntervalTimer Duo on October 9, 2026.

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