Comparison

Interval Timer vs Core Health Tracker

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 manage workout intervals with customizable work and rest periods. It runs in the background and allows music playback, with options to save settings and share progress. Integrates with Apple Health for heart rate monitoring.

Highlights
  • Customizable sets, intervals, and rest times
  • Runs in background and with screen locked
  • Music playlist integration
  • Save settings as templates
  • Apple Health integration for heart rate
  • Post workouts to social media
Features
Read full description

***Free and reliable. Perfect for use at home, at the track or in the gym. We’re proud to introduce this handy little app that helps you keep track of your work and rest periods during workouts. Whether your into cycling, running, lifting weights, exercise, workout, stretching, boxing, MMA or HIT, this interval timer will prove to be an invaluable asset to you. Running foreground, background or with device locked, this reliable app allows you specify an overall time as well as program High/Low intensity interval and rest time between sets. Produced by Polycents! Key Features: - Customizable sets, high/low intensity interval and rest for your own need - Retina display, iOS4 and multitasking - Continue to run even when screen is locked - Play your song or playlist during your workout - Post your workout to Facebook or Twitter - Save settings as templates Customizable Features: - Number of Sets - Countdown Time - Set Time - Low Interval time - High Interval time - Rest Time - First Interval (low or high) - Sound Volume - Timer Sounds - Auto Lock - Vibrate - Pause during Rest - Playlist - New Each Set APPLE HEALTH: -Interval Timer can use Apple Health to show heart rate in Apple Watch App. # Subscription Details # - Monthly and annual subscriptions are available. - Payment will be charged to your iTunes account at confirmation of purchase. - Your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period. - Automatic renewals will be charged at the same price you were originally charged for the subscription. - Subscriptions can be managed by going to Account Settings on the App Store after purchase. Terms of Use: https://www.iubenda.com/terms-and-conditions/18915396 Privacy Policy: https://www.iubenda.com/privacy-policy/18915396

About

Core Health Tracker

Features
Read full description

Tell Core how long you have. It builds a real walking, running or cycling route from where you are standing — a loop that brings you back to your own front door — then guides you round it and logs the whole thing to Apple Health. ROUTES THAT BRING YOU HOME • Ask by time, distance or step count • Every route is a loop, so there is no getting somewhere and working out how to get back • Core learns how fast you actually walk, so thirty minutes means thirty minutes at your pace • Turn-by-turn directions, live progress and the distance still to go • A Live Activity on your Lock Screen, so you are not unlocking your phone mid-walk • Save a loop you like and start it again any time • Or skip the planning entirely and free roam with GPS APPLE WATCH • Start, pause and finish from your wrist • Recorded as a proper workout, with heart rate and calories, in Apple Health FOOD IN SECONDS • Log by voice, by typing, by photographing your plate, or by scanning a barcode • Calories, protein, carbs, fat and fibre, with portions you can correct • Add or remove food on any day — a lunch you forgot, or meals planned for the week ahead • Written straight to Apple Health alongside everything else THE DAILY THINGS • Steps, distance and calories, with streaks that notice when you keep showing up • Water in a single tap • Weight and BMI trends over time ASK CORE Type it or say it. "A 10,000 step walk." "A 5k run." "500ml of water." "Chicken pasta for dinner." Core works out what you meant and gets on with it. EVENTS Join step and distance challenges, earn badges as you go, and share a recap of a finished activity in the style you choose. CORE FREE AND CORE PREMIUM Core is free to start, including 10 routes, 10 food photo analyses and 20 assistant messages. Core Premium removes those limits and is available monthly or yearly. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple ID settings at any time. Terms of Use: https://corehealthtracker.com/terms Privacy Policy: https://corehealthtracker.com/privacy Subscription Terms: https://corehealthtracker.com/subscription-terms Core is for personal wellness and motivation. It is not a doctor, dietitian, medical device, emergency service or safety service. Route, nutrition, calorie and weather information are estimates and can be incomplete or inaccurate. Check local conditions and your own circumstances before you set off.

Screenshots

Interval Timer4 screens
Core Health Tracker4 screens

Verdict

The call

The clearest difference is ads: Core Health Tracker at none against Interval Timer's shown. Core Health Tracker also leads on update cadence (every 4 days vs every 9 days). Interval Timer's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 17.0). On price and in-app purchases 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 6 in-app purchases, starting at $0.99 per month and Core Health Tracker sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Interval Timer ships an update every 9 days, Core Health Tracker every 4 days. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
Interval Timer versus Core Health Tracker: the parameters behind the verdict, then further details
ParameterInterval TimerCore Health Tracker
PriceFreeFree
Rating4.5 (19K ratings) — better—
Positive reviews72.9% of reviews—
Number of ratings19K — better—
Update frequencyEvery 9 daysEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS13.0 — better17.0
Further details — not scored
Size143 MB22 MB
Age rating4+4+
DeveloperNEO PIXEL LABS PTE. LTD.thomas Lee

Bugs and requests

Interval Timer

Reported bugs

3 issues
  • Ads block functionality
  • App freezes or crashes
  • Timer doesn't work in background

Requested features

5 requests
  • Add notes to workouts
  • Provide workout history and analytics
  • Allow syncing with Apple Health
  • Improve Apple Watch integration
  • Add more customization options

Core Health Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Interval Timer

Subscriptions6
  • Plus - 1 Month$0.991 Month
  • Premium - 1 Month$1.991 Month
  • Plus - 1 Month$1.991 Month
Show 3 more
  • Premium - 1 Month$2.991 Month
  • Plus - 1 Year2 variants$4.991 Year
  • Premium - 1 Year7 Days trial2 variants$9.991 Year
2 purchases

Core Health Tracker

Subscriptions2
  • Core Premium3 Days trial$6.991 Month
  • Core Premium Yearly3 Days trial$49.991 Year

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Core Health Tracker free?
Core Health Tracker is free to download, with in-app purchases available.
Do Interval Timer or Core Health Tracker have ads?
Interval Timer shows ads; Core Health Tracker does not.
Which is updated more often, Interval Timer or Core Health Tracker?
Interval Timer ships an update every 9 days, and Core Health Tracker every 4 days. Most recently, Interval Timer was updated on October 27, 2026 and Core Health Tracker on October 13, 2026.

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