Comparison

Simple Interval Timer vs Interval Timer

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

Head to head
About

Simple Interval Timer

This app provides a customizable interval timer for various training methods like HIIT, Tabata, and boxing. Structure your workouts to achieve your fitness goals with configurable sets and timers.

Highlights
  • Customizable interval sets
  • Configurable workout values
  • Supports HIIT, Tabata, boxing, sprints
  • Workout structure and discipline
  • Achieve fitness goals
Features
Read full description

The Simple Interval Timer - S.I.T. is designed for any kind of interval training. Create your own sets and workouts! All the values are configurable so it can be used in different interval training methods such as Crossfit Training, HIIT, Tabata, boxing, or sprint training. It will give your workout the discipline and structure necessary to try and accomplish your fitness goals.

About

Interval Timer

Organize your running and high-intensity interval training sessions with ease. Quickly set up custom time intervals for running, walking, warm-ups, and cool-downs. Receive voice and vibration notifications for interval changes, and enjoy background music playback.

Highlights
  • Intuitive design
  • Customizable time intervals
  • Warm-up and cool-down timers
  • Voice and vibration notifications
  • Background music support
  • Foreground/background operation
Features
Read full description

Interval Run is a running interval timer for iPhone and Apple Watch. Create run/walk intervals, sprint sessions, and HIIT workouts in seconds. Train with voice announcements and haptic cues, control workouts from Apple Watch, save sessions to Apple Health, and track your workout history. Choose from 25+ ready-made running workouts or build your own. Follow intervals from the Lock Screen and Dynamic Island, and focus on your run. 25+ READY-MADE RUNNING WORKOUTS • Explore run/walk workouts, running intervals, sprints, hill repeats, tempo runs, fartlek sessions, ladders, pyramids, and more • Find workouts for speed, endurance, recovery, and different training goals • Start any workout immediately or customize it to match your training • Save your favorites to My Workouts for quick access BUILD YOUR OWN INTERVAL WORKOUT • Create simple run/walk intervals or advanced multi-step workouts • Add warm-up, running, walking, recovery, rest, and cool-down sections • Set a custom duration for every step • Repeat intervals and complete workout blocks • Add custom cues to guide you through each workout step • Build sprint, HIIT, cardio, and structured running sessions • Save multiple workouts and reuse them anytime • Preview the complete workout before you start VOICE & HAPTIC INTERVAL CUES • Hear clear voice announcements at every interval transition • Feel haptic cues when it’s time to run, walk, recover, or rest • Keep your workout active while your iPhone is locked or the app is in the background • Follow your current interval from the Lock Screen and Dynamic Island with Live Activities • Listen to music, podcasts, or audiobooks while you train RUN WITH APPLE WATCH • Sync workouts to Apple Watch • Start, pause, and control workouts directly from your wrist • Run phone-free with your workouts ready on Apple Watch • Follow interval progress without repeatedly checking your phone • Track heart rate, distance, and active energy during your workout • Get haptic interval cues directly on your Watch • Save completed workouts to Apple Health TRACK YOUR TRAINING • Browse completed workouts in calendar and history views • Review workout duration, intervals, distance, and active energy • Look back at your running and interval training over time • Share your workout results • Export and restore backups of your workout data MADE FOR RUNNERS WHO TRAIN WITH INTERVALS Whether you’re starting with beginner run/walk intervals, adding speed work to your weekly training, preparing for a 5K or another race, or creating a challenging HIIT session, Interval Run keeps every interval clear from start to finish. Use it as a simple run/walk timer, a running interval timer for speed training, an Apple Watch interval timer for phone-free workouts, or a flexible workout builder for more advanced structured sessions. From beginner run/walk workouts to sprints, tempo runs, hill repeats, fartlek training, and custom multi-step sessions, Interval Run adapts to the way you train. Start with one of 25+ ready-made workouts or create your own. Interval Run handles the timing so you can focus on your training. Some features shown, including the full workout library, advanced workout creation, multiple saved workouts, and full workout history, require Interval Run Pro. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Simple Interval Timer3 screens
Interval Timer4 screens

Verdict

The call

The clearest difference is rating: Interval Timer at 4.5 against Simple Interval Timer's 4.0. Interval Timer also leads on ratings volume (534 vs 2). Simple Interval Timer's advantage is in-app purchases (none vs 3) and update cadence (every 5 days vs every 3 months). On price, ads 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 $2.99 per month. Simple Interval Timer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Interval Timer holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Interval Timer has 534 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 50% of Simple Interval Timer's written reviews are positive against 21% of Interval Timer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Simple Interval Timer ships an update every 5 days, Interval Timer every 3 months. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

Scorecard7 real differences · 3 level
Simple Interval Timer versus Interval Timer: the parameters behind the verdict, then further details
ParameterSimple Interval TimerInterval Timer
PriceFreeFree
Rating4.0 (2 ratings)4.5 (534 ratings) — better
Positive reviews50.0% of reviews — better21.1% of reviews
Number of ratings2534 — better
Update frequencyEvery 5 days — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.5 — better26.0
Further details — not scored
Size2 MB16 MB
Age rating4+4+
DeveloperDES ProductionsRoma Sosnovsky

Customer experience

Simple Interval Timer

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

Interval Timer

All ratings534 ratings
Positive86.7%
Neutral3.4%
Negative9.9%
Written reviews95 reviews
Positive21.1%
Neutral8.4%
Negative70.5%

Bugs and requests

Simple Interval Timer

Not enough reviews yet to summarise bugs or requests.

Interval Timer

Reported bugs

4 issues
  • Timer resets or freezes during workout
  • Prompts not working when phone is locked or in pocket
  • Unexpected interval changes or duration changes
  • Compatibility issues with music playback

Requested features

6 requests
  • Option to pause/resume timer
  • Larger time remaining display
  • Apple Watch app
  • Ability to play audio prompts even with screen off
  • More interval options (run/walk/jog)
Show 1 more
  • Congratulatory audio cue at the end

In-app purchases

None

Simple Interval Timer

No in-app purchases

3 purchases

Interval Timer

Subscriptions2
  • Interval Run Pro Monthly$2.991 Month
  • Interval Run Pro Annual7 Days trial$19.991 Year
One-time1
  • Full Version$2.99

Questions

Is Simple Interval Timer free?
Simple Interval Timer is free to download, with no in-app purchases.
Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Which has better reviews, Simple Interval Timer or Interval Timer?
Interval Timer is rated higher. Simple Interval Timer averages 4.0 out of 5 from 2 ratings, while Interval Timer averages 4.5 from 534 ratings.
Do Simple Interval Timer or Interval Timer have ads?
Neither Simple Interval Timer nor Interval Timer shows ads.
Which is updated more often, Simple Interval Timer or Interval Timer?
Simple Interval Timer ships an update every 5 days, and Interval Timer every 3 months. Most recently, Simple Interval Timer was updated on October 1, 2026 and Interval Timer on October 10, 2026.

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