Comparison

Interval Timer □ HIIT Timer vs Sperrstunde

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

Easily set up custom workout intervals with a simple drag-and-tap interface. This app provides audio cues and detailed history to track your fitness progress, even while listening to music.

Highlights
  • Customizable intervals
  • Drag-and-tap interface
  • Voice and beep guides
  • Background audio support
  • Detailed workout history
  • 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 work out. ∙ 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 offers an optional auto-renewable subscription, Premium Pass (monthly), and a one-time Lifetime Pass. Premium Pass starts with a 1-week free trial for eligible new subscribers, then renews automatically every month at the price shown in the app until you cancel. Payment is charged to your Apple Account when you confirm the purchase or, with a free trial, when the trial ends. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for the renewal within 24 hours before the end of the current period. You can manage the subscription and turn off auto-renewal at any time in your Apple Account settings. Cancelling stops the next renewal, and Premium stays active until the end of the period you've paid for. Any unused part of a free trial ends when you buy a subscription. Privacy Policy: https://float.support/interval-timer/privacy Terms of Use: https://float.support/interval-timer/terms

About

Sperrstunde

Features
Read full description

Sperrstunde helps you go offline at night and keep your evening calmer. Choose the apps that usually keep you scrolling, set your active nights and define your block window. Sperrstunde then blocks your selected apps automatically during that time, so a quick look does not turn into another long session. You stay in control: - Choose only the apps you want to block - Set your own sleep and wake times - Pick the nights Sperrstunde should be active - Pause a night when you really need to - Change your selection anytime Sperrstunde is built for evenings, sleep routines and calmer nights. Everything outside your selection stays usable. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Interval Timer □ HIIT Timer4 screens
Sperrstunde4 screens

Verdict

The call

The clearest difference is device support: Interval Timer □ HIIT Timer at 3 against Sperrstunde's 1. Interval Timer □ HIIT Timer also leads on iOS requirement (15.6 vs 26.0). On price, update cadence, ads and in-app purchases 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 Sperrstunde sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Interval Timer □ HIIT Timer ships an update every 5 weeks, Sperrstunde every 6 weeks. The most recent releases landed on November 14, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 8 level
Interval Timer □ HIIT Timer versus Sperrstunde: the parameters behind the verdict, then further details
ParameterInterval Timer □ HIIT TimerSperrstunde
PriceFreeFree
Rating4.8 (88K ratings) — better—
Positive reviews60.7% of reviews—
Number of ratings88K — better—
Update frequencyEvery 5 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better26.0
Further details — not scored
Size21 MB3 MB
Age rating4+4+
DeveloperFloat Tech, LLChafencity.dev GmbH

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

Sperrstunde

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
2 purchases

Sperrstunde

Subscriptions2
  • Sperrstunde Weekly3 Days trial$1.997 Days
  • Sperrstunde Yearly$12.991 Year

Questions

Is Interval Timer □ HIIT Timer free?
Interval Timer □ HIIT Timer is free to download, with in-app purchases available.
Is Sperrstunde free?
Sperrstunde is free to download, with in-app purchases available.
Do Interval Timer □ HIIT Timer or Sperrstunde have ads?
Neither Interval Timer □ HIIT Timer nor Sperrstunde shows ads.
Which is updated more often, Interval Timer □ HIIT Timer or Sperrstunde?
Interval Timer □ HIIT Timer ships an update every 5 weeks, and Sperrstunde every 6 weeks. Most recently, Interval Timer □ HIIT Timer was updated on November 14, 2026 and Sperrstunde on November 10, 2026.

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