Comparison

Simple Interval Timer vs Chronometer

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 straightforward interval timer for various training types like running, cycling, and HIIT. Customize sets, action, and break durations for a personalized workout experience. It runs in the background and saves recent configurations.

Highlights
  • Customizable sets, action, and break durations
  • Plain and simple design
  • Saves last 5 configurations
  • Runs in the background
  • iOS screen dimming prevention
  • Apple Watch integration with heart rate monitoring
Features
Read full description

Simple Interval Timer (SIT) can be used for any kind of interval training, such as running, cycling, HIIT sessions (including Tabata method), stretching, etc. SIT is exactly what you would expect. An interval timer, which is easy to set up and use. It features a nice plain design, with no unnecessary controls. Adjust Number of Sets, Action and Break duration to your needs and you are ready to go! On the iOS an extra switch control allows you to prevent the screen from dimming. SIT remembers the last 5 configurations you have used. Swipe left across the Settings screen to switch to another configuration. SIT can run in the background, while you are playing music, watching videos or doing anything else on your iOS device. SIT Watch features the same simplicity as the iOS app while offering the same functionality, plus it will measure your heartbeat during the workout sessions. The recordings will be available in the Apple's Health app. SIT Watch runs independently of the phone, so no need to have your phone around during your workouts (although you will need your phone during the very first time you launch SIT watch). SIT lets you avoid any tedious set up and focus on your training!

About

Chronometer

This interval timer is designed for various training routines, including weightlifting, HIIT, and boxing. It offers customizable timers, repetitions, and sound alerts to guide your workouts. Save and load your training plans for easy access and progress tracking.

Highlights
  • 3 programmable timers
  • Customizable time settings
  • Customizable repetitions
  • Save and load training plans
  • Audible alerts
  • Speaking coach
  • Visual cues
Features
Read full description

This app is an awesome training timer for lifting weights, exercise, workout, stretching, boxing, MMA or HIIT, this interval timer will prove to be an invaluable asset for your HIIT interval training. FEATURES: * 3 programmable timers * Customize all time settings * Customize number of exercises * Customize number of repetitions * Save and load plannings * easy to hear alerts * pause and resume session * restart session where you left off if interrupted * Set sound volume * screen changecolor for visual cue * Speaking coach If you like this app please consider writing a positive review on the App Store, thank you. This will help us to add new features, fix any bugs, and improve app.

Screenshots

Simple Interval Timer4 screens
Chronometer4 screens

Verdict

The call

The clearest difference is review sentiment: Simple Interval Timer at 85% against Chronometer's 0%. Simple Interval Timer also leads on rating (4.9 vs 3.0) and ratings volume (5.4K vs 3). Chronometer's advantage is ads (none vs shown). On price, in-app purchases, monetization model 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. Simple Interval Timer sells 4 one-off in-app purchases and Chronometer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Simple Interval Timer holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Simple Interval Timer has 5.4K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 85% of Simple Interval Timer's written reviews are positive against 0% of Chronometer's.

UpkeepUpdate frequency

Simple Interval Timer ships an update every 8 months, Chronometer every 37 months. Both last shipped on September 22, 2026.

Scorecard5 real differences · 5 level
Simple Interval Timer versus Chronometer: the parameters behind the verdict, then further details
ParameterSimple Interval TimerChronometer
PriceFreeFree
Rating4.9 (5.4K ratings) — better3.0 (3 ratings)
Positive reviews84.7% of reviews — better0.0% of reviews
Number of ratings5.4K — better3
Update frequencyEvery 8 months — betterEvery 37 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS14.514.0 — better
Further details — not scored
Size10 MB3 MB
Age rating4+4+
Developer0FFSergio Musoles Tornador

Customer experience

Simple Interval Timer

All ratings5,444 ratings
Positive97.6%
Neutral1.2%
Negative1.2%
Written reviews398 reviews
Positive84.7%
Neutral4.5%
Negative10.8%

Chronometer

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews9 reviews
Positive0.0%
Neutral11.1%
Negative88.9%

Bugs and requests

Simple Interval Timer

Reported bugs

3 issues
  • Timer stops working when screen is locked
  • Countdown beeps not syncing with timer
  • Interval times not accurately tracked

Requested features

4 requests
  • Ability to name and delete saved configurations
  • More granular interval time settings (e.g., 1-second increments)
  • Stronger haptic feedback on Apple Watch
  • Integration with workout tracking apps

Chronometer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Simple Interval Timer

One-time4
  • Espresso$0.99
  • Americano$1.99
  • Ad-free version$2.99
Show 1 more
  • Caramel Cappuccino$2.99
1 purchases

Chronometer

One-time1
  • Unlock timer settings$1.99

Questions

Is Simple Interval Timer free?
Simple Interval Timer is free to download, with in-app purchases available.
Is Chronometer free?
Chronometer is free to download, with in-app purchases available.
Which has better reviews, Simple Interval Timer or Chronometer?
Simple Interval Timer is rated higher. Simple Interval Timer averages 4.9 out of 5 from 5.4K ratings, while Chronometer averages 3.0 from 3 ratings.
Do Simple Interval Timer or Chronometer have ads?
Simple Interval Timer shows ads; Chronometer does not.
Which is updated more often, Simple Interval Timer or Chronometer?
Simple Interval Timer ships an update every 8 months, and Chronometer every 37 months. Most recently, Simple Interval Timer was updated on September 22, 2026 and Chronometer on September 22, 2026.

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