Comparison

Custom Interval Timers vs Interval Timer One

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

Head to head
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!

About

Interval Timer One

This user-friendly interval timer app simplifies fitness routines by allowing effortless customization of workout durations. It offers intuitive controls for setting intervals, pausing, resuming, and adjusting the timer, ensuring a focused and efficient training experience without unnecessary features.

Highlights
  • Intuitive interval customization
  • Pause and resume functionality
  • Adjust timer forward/backward
  • Uninterrupted timer operation
  • Plays music without disruption
Features
Read full description

Simplify your fitness routine with user-friendly interval timer app. This app skips the confusion and complex settings. Effortlessly set your desired workout duration and start your session hassle-free. Key features of our app include: * Intuitive scrolling and selection options for warm-up, work, rest, and set duration. Customize your intervals to suit your specific workout needs. * Pause and resume functionality allows you to take breaks and maintain control over your interval training, providing flexibility during your sessions. * Easily adjust the timer forward or backward as needed, ensuring a seamless flow without interruptions. * Even if your app gets interrupted during your interval workout, our timer will continue running, allowing you to stay focused. * Enjoy uninterrupted music while working out. Our app ensures that your music plays without disruptions, keeping you motivated throughout your sessions. This app is designed to provide a focused and efficient experience, solely dedicated to serving as an interval timer. It does not attempt to be a dietary planner, workout calendar, workout routine manager, or include any other non-essential features. By eliminating unnecessary complexities, our app ensures a streamlined and hassle-free interval timer experience for your fitness sessions. Discover the simplicity and efficiency of interval training with our app. Take control of your workouts, minimize distractions, and make the most of your training time.

Screenshots

Custom Interval Timers4 screens
Interval Timer One3 screens

Verdict

The call

The clearest difference is ads: Interval Timer One at none against Custom Interval Timers's shown. Interval Timer One also leads on monetization model (free vs ad-supported) and update cadence (every 2 months vs every 4 months). Custom Interval Timers's advantage is ratings volume (14 vs 2). On price, rating, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Custom Interval Timers against 5.0 for Interval Timer One. That said, the two scores are not equally well evidenced: Custom Interval Timers has 14 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Custom Interval Timers ships an update every 4 months, Interval Timer One every 2 months. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
Custom Interval Timers versus Interval Timer One: the parameters behind the verdict, then further details
ParameterCustom Interval TimersInterval Timer One
PriceFreeFree
Rating5.0 (14 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings14 — better2
Update frequencyEvery 4 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.113.0 — better
Further details — not scored
Size40 MB2 MB
Age rating4+4+
DeveloperAlex Richjun hyun

Customer experience

Custom Interval Timers

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Interval Timer One

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Custom Interval Timers

No in-app purchases

None

Interval Timer One

No in-app purchases

Questions

Is Custom Interval Timers free?
Custom Interval Timers is free to download, with no in-app purchases.
Is Interval Timer One free?
Interval Timer One is free to download, with no in-app purchases.
Which has better reviews, Custom Interval Timers or Interval Timer One?
Custom Interval Timers and Interval Timer One are both rated 5.0 out of 5 on the App Store, from 14 and 2 ratings respectively.
Do Custom Interval Timers or Interval Timer One have ads?
Custom Interval Timers shows ads; Interval Timer One does not.
Which is updated more often, Custom Interval Timers or Interval Timer One?
Custom Interval Timers ships an update every 4 months, and Interval Timer One every 2 months. Most recently, Custom Interval Timers was updated on October 5, 2026 and Interval Timer One on October 1, 2026.

Other comparisons