Comparison

Interval Timer vs Custom Interval Timers

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 create and manage custom interval training workouts. It offers various templates, customization options for intervals, and clear visual cues during exercise. Workouts can be saved, shared, and synced across devices.

Highlights
  • Custom interval workout creation
  • Ladder and pyramid templates
  • HealthKit integration
  • Apple Watch app for heart rate and calories
  • Workout sharing via email/AirDrop
  • Large font and contrasting colors
  • Customizable audio and visual cues
Features
Read full description

Use HIIT Builder as an interval timer to manage your High Intensity Interval Training to maximize your fitness. Create custom interval workouts from a basic HIIT template or use our ladder and pyramid templates to energize your personal training. All your workouts are stored on your device. There is no need to create an account. We don’t show ads. If you enable it, HIIT Builder will automatically log your workouts in HealthKit for review in Health App or Fitness App. Additionally, you can enable HIIT Builder's Apple Watch app to show your heart rate and calories burned during a workout. You can share interval workouts with friends and family via email and AirDrop. You can also download HIIT Builder interval workouts for free from our website. We add new interval workouts regularly. HIIT Builder is a great interval training app for home workouts or workouts at the park. You can create Tabata workouts or any HIIT workout of your choice. The ability to customize any interval workout to your needs allows you to take control of your fitness using HIIT Builder as an interval timer. HIIT Builder uses large fonts and contrasting colors to make it easy to see where you are in an exercise in your interval workout. You can customize how HIIT Builder tells you that an interval is coming to a close. The app can countdown to the end of an interval or it can ring bells. You can have the app speak the name of the next exercise. You can also have the app flash the screen when transitioning between interval exercises. Each interval workout can be completely customized. You can have each exercise interval be the same length or you can modify each interval’s length to get exactly what you need from the exercise. Create as many interval workouts as you want. Search through your personal workout library to choose which workout you want to do. When iCloud is enabled, you can create workouts on your iPad and see them show up in your iPhone’s HIIT Builder workout library. Download HIIT Builder and get a free, no obligation, trial of all features for two days. Thoughts, concerns, suggestions? We're always trying to improve. Please email us at info@hiitbuilderapp.com

About

Custom Interval Timers

Design personalized interval timers for workouts or productivity. Its intuitive editor allows for custom flows with various settings like countdowns and personalized interfaces. Offers light/dark modes and an option to disable ads.

Highlights
  • Customizable interval flows
  • Intuitive timer editor
  • Count up or down timers
  • Personalized running interface
  • Light/dark mode
  • Ad-free option
Features
Read full description

Create highly customizable interval timers in a beautiful Interface. Interval timers are useful for exercise, like High-intensity interval training (HIIT) or Tabata, and can also be used to manage productivity, events, and more! This app provides a fascinatingly simple and intuitive editor for setting up your own custom timers. With just a few building blocks you can create the exact experience you want. Multiple settings to match your preferences: - Count up or down - Personalize the running interface to show what matters to you - Light/dark mode - Disable ads for free!

Screenshots

Interval Timer4 screens
Custom Interval Timers4 screens

Verdict

The call

The clearest difference is in-app purchases: Custom Interval Timers at none against Interval Timer's 3. Custom Interval Timers also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 88%). Interval Timer's advantage is ads (none vs shown) and update cadence (every 11 days vs every 4 months). On price, ratings volume 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

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $0.49 per month. Custom Interval Timers asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Custom Interval Timers holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 12 and 14 respectively. Written reviews point the same way: 88% of Interval Timer's written reviews are positive against 100% of Custom Interval Timers's.

UpkeepUpdate frequency

Interval Timer ships an update every 11 days, Custom Interval Timers every 4 months. The most recent releases landed on September 8, 2026 and August 24, 2026 respectively.

Scorecard7 real differences · 3 level
Interval Timer versus Custom Interval Timers: the parameters behind the verdict, then further details
ParameterInterval TimerCustom Interval Timers
PriceFreeFree
Rating4.6 (12 ratings)5.0 (14 ratings) — better
Positive reviews87.5% of reviews100.0% of reviews — better
Number of ratings1214 — better
Update frequencyEvery 11 days — betterEvery 4 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size5 MB40 MB
Age rating4+4+
DeveloperCurtis WichernAlex Rich

Customer experience

Interval Timer

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

Custom Interval Timers

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Interval Timer

Subscriptions2
  • Monthly Subscription$0.491 Month
  • Yearly Subscription$2.991 Year
One-time1
  • Forever$7.99
None

Custom Interval Timers

No in-app purchases

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Custom Interval Timers free?
Custom Interval Timers is free to download, with no in-app purchases.
Which has better reviews, Interval Timer or Custom Interval Timers?
Custom Interval Timers is rated higher. Interval Timer averages 4.6 out of 5 from 12 ratings, while Custom Interval Timers averages 5.0 from 14 ratings.
Do Interval Timer or Custom Interval Timers have ads?
Custom Interval Timers shows ads; Interval Timer does not.
Which is updated more often, Interval Timer or Custom Interval Timers?
Interval Timer ships an update every 11 days, and Custom Interval Timers every 4 months. Most recently, Interval Timer was updated on September 8, 2026 and Custom Interval Timers on August 24, 2026.

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