Comparison

Ultra Intervals Workout 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

Ultra Intervals Workout Timer

Create and customize interval training routines with simple text input. This app guides you through workouts with spoken cues, sound alerts, and large visual displays, allowing you to focus on your exercise. It supports various training styles like HIIT and Tabata, and can even manage music playback during sessions.

Highlights
  • Create custom interval workouts using plain text
  • Spoken exercise names, times, and notifications
  • Customizable sound cues and visual displays
  • Support for HIIT, Tabata, and circuit training
  • Mix timed and non-timed workout sections
  • Music ducking for notifications
  • Pre-loaded sample workouts
Features
Read full description

Define basic interval timers and custom interval workouts with ease:  Write the workout as plain understandable text and save it, launch the timer and start exercising! As an example, basic 'Tabata' interval timer can be defined by just typing this text: 8x 00:20 Work hard! 00:10 Rest Type those three lines in the text editor, save the file and launch the timer, then do your workout assisted by big display texts, spoken audio, sound cues and more. 8 rounds of 20 seconds of work, 10 seconds rest! Same way you can define more complex workouts, with multiple interval sections consisting of any number of exercises. Check out the screenshots! Running, cycling, kettlebells,..., yoga: Ultra Intervals speaks the exercise names and custom notifications as you define, being capable of guiding you through a full workout with 'phone in your pocket' mode - just *listen* to the instructions and focus on the workout. No need to see the device screen at all. Ultra Timer supports 20+ languages (most languages supporting the iOS text-to-speech functionality are supported). Intervals, HIIT, Tabata, Circuit...equally easy to set up. Customise each workout separately: Choose if you want to have the interval names and notifications spoken or rather have the timer beep instead. Customise colours as you like, all the way to having each exercise step shown with a different colour. Mix timed and non-timed sections in one workout: Ultra Intervals can also guide you through your gym workout or weight training, timing just the breaks and rest periods acting as your set coach. Play music with your favourite music player. Ultra Intervals 'ducks' the music during spoken notifications and brings the volume back on ones audio cue has ended. ULTRA INTERVALS FEATURES: CREATE AND EDIT WORKOUTS WITH EASE Type your workouts in as text plain text, following just few super simple rules. Since the workouts are defined as text, they can be edited on a Mac or PC and imported from cloud services. SPEAKS EXERCISE NAMES, TIMES AND NOTIFICATIONS. AND IT BEEPS TOO. Speaks exercise names, times and custom notifications as you define (or you can turn speech off altogether). You can customize the notifications as you like. Choose between various 'beep' sounds or turn them off as well. SAMPLE WORKOUTS - USE AS SUCH OR AS TEMPLATES Comes with plenty of example workouts and timers which can be used as such or as templates for new ones. Copying a workout file can be done with one swipe & tap. MULTIPLE SECTIONS IN ONE WORKOUT You can define multiple interval sections in one workout. Again, super easily - see the App Store screenshots to get the idea how simple this is! CLEAR DISPLAYS READABLE FROM AFAR Large animated display of time, current and up-next workout steps. Big text you can truly read from afar. CUSTOM NOTIFICATIONS WITH 'TOKENS' Define custom notification messages spoken during the workout, use 'tokens' in the notifications, for example referring to name of the current or the next exercise, time of the next exercise, time remaining of current exercise, interval round number, heart rate and more. MIX TIMED AND NON-TIMED WORKOUT STEPS Following a simple rule (just add the '&' character in the exercise name!), you can make the timer pause automatically for a 'manual' step in your workout and then with one tap restart for the rest period. RUNS IN THE BACKGROUND You can lock the screen, put the phone in the pocket and do the workout guided by the spoken audio instructions. IMPORT, COPY, EXPORT WORKOUTS Straightforward one-step functionality for importing text files from the cloud, copying files and exporting to cloud, email and more. MUSIC Allows you to listen to music during the workout, lowers the music volume for spoken audio. CUSTOMIZABLE FEATURES (CAN BE SET FOR EACH WORKOUT SEPARATELY) For *example*: Language spoken, silent mode, speech/beeps in use, speech/beeps options, countdown time, HR monitor in use, colors and many many more!

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

Ultra Intervals Workout Timer4 screens
Custom Interval Timers4 screens

Verdict

The call

The clearest difference is rating: Custom Interval Timers at 5.0 against Ultra Intervals Workout Timer's 4.5. Custom Interval Timers also leads on review sentiment (100% vs 89%) and ratings volume (14 vs 4). Ultra Intervals Workout Timer's advantage is ads (none vs shown) and update cadence (every 6 days vs every 4 months). On price, 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

Custom Interval Timers holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 14 respectively. Written reviews point the same way: 89% of Ultra Intervals Workout Timer's written reviews are positive against 100% of Custom Interval Timers's.

UpkeepUpdate frequency

Ultra Intervals Workout Timer ships an update every 6 days, Custom Interval Timers every 4 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

Scorecard7 real differences · 3 level
Ultra Intervals Workout Timer versus Custom Interval Timers: the parameters behind the verdict, then further details
ParameterUltra Intervals Workout TimerCustom Interval Timers
PriceFreeFree
Rating4.5 (4 ratings)5.0 (14 ratings) — better
Positive reviews88.9% of reviews100.0% of reviews — better
Number of ratings414 — better
Update frequencyEvery 6 days — betterEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size9 MB40 MB
Age rating4+4+
DeveloperTapio KuusistoAlex Rich

Customer experience

Ultra Intervals Workout Timer

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews9 reviews
Positive88.9%
Neutral11.1%
Negative0.0%

Custom Interval Timers

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

In-app purchases

None

Ultra Intervals Workout Timer

No in-app purchases

None

Custom Interval Timers

No in-app purchases

Questions

Is Ultra Intervals Workout Timer free?
Ultra Intervals Workout Timer is free to download, with no in-app purchases.
Is Custom Interval Timers free?
Custom Interval Timers is free to download, with no in-app purchases.
Which has better reviews, Ultra Intervals Workout Timer or Custom Interval Timers?
Custom Interval Timers is rated higher. Ultra Intervals Workout Timer averages 4.5 out of 5 from 4 ratings, while Custom Interval Timers averages 5.0 from 14 ratings.
Do Ultra Intervals Workout Timer or Custom Interval Timers have ads?
Custom Interval Timers shows ads; Ultra Intervals Workout Timer does not.
Which is updated more often, Ultra Intervals Workout Timer or Custom Interval Timers?
Ultra Intervals Workout Timer ships an update every 6 days, and Custom Interval Timers every 4 months. Most recently, Ultra Intervals Workout Timer was updated on October 6, 2026 and Custom Interval Timers on October 5, 2026.

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