Comparison

Interval Timer ++ vs RUN interval

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 provides a customizable interval timer for high-intensity interval training (HIIT) and circuit workouts. Easily set up work, rest, and repeat intervals, track your progress, and integrate with your health data. Enjoy your workouts with background music and notifications.

Highlights
  • Customizable work/rest/repeat intervals
  • Supports iPhone and Apple Watch
  • Workout history in calendar view
  • Health app integration (HealthKit)
  • Background notifications
  • Listen to music during workouts
  • Premium timers for mixed fitness types
Features
Read full description

Award-winning app for your daily workouts! Simple set up, intense workout: *** One touch to set up Workout, Rest, and Repeat. *** Supports both iPhone and Apple Watch *** Colorful design, to give you some eye candy while working hard *** Multiple timers for easy access and training *** Premium timers where different fitness types are mixed *** Background notification, so you can keep working out while browsing other apps, or even when screen is locked *** Listen to your favorite music while working out *** See your workout history in calendar view Health App Integration We integrate with the health app (HealthKit) to read and track your steps data and show them in a beautiful way. Feature details: - Workout duration: 2 seconds to 8 minutes - Rest duration: 0 seconds to 8 minutes - Repeat: 20 times (50 times if purchased Premium Subscription) - Premium timers: mix fitness types, including Planks, Jumping Jack, Push Ups, Sit Ups, High Knees, Side Planks, Butt Kicks, Side Lunges, Lunges, etc. - Multiple timers for quick access - Name your timers - Swipe-to-delete timers - Drag-n-drop to reorder custom timers - 10 seconds count down, so you can get into workout position - Count down sound before next workout starts, for you to recover position - Pause and resume workout at any time - Reset at any time if workout was interrupted - Calendar view: shows your work/rest/repeat sessions - Listen to your favorite music in background, while working out the Interval Timer in foreground - Background music will be tuned down when playing workout sounds - Vibration / Haptic feedbacks between workout and rest - Ability to mute all workout sound Users say good works after usage: "I love the simplicity and ease of use of this app. It is almost exactly what I am looking for." "No frills or gimmicks, this app gives it to you straight, which is how interval timers should work IMO." "An eye-candy for your tough workouts." "Mind-blowing on how easy it is to use." "Simple. Does EXACTLY what you need." Also checkout our awesome demo video on Youtube: https://www.youtube.com/watch?v=gO_z8mN1asU Interval Timer Pro (In App Purchase): - Create unlimited number of timers for easy access - Use our premium timers - Repeat workout for more than 20 times • You can subscribe for Interval Timer Pro inside the app; subscriptions are billed monthly or annually at the rate selected depending on the subscription plan. • Alternatively a one-time payment plan is available (this is not a subscription). • Payment will be charged to your iTunes account at confirmation of purchase. • Subscriptions will automatically renew unless auto-renew is cancelled at least 24 hours before the end of current period. • Your account will be charged according to your plan for renewal within 24 hours prior to the end of the current period. • You can manage or turn off auto-renew in your Apple ID account settings at any time after purchase. • To manage your subscriptions or turn off auto-renewal: - Go to Settings > iTunes & App Store - Tap your Apple ID at the top of the screen - Tap View Apple ID. You might need to sign in or use Touch ID. - Tap Subscriptions. - Tap the subscription you want to manage. - Use the options to manage your subscription. • No cancellation of the current subscription is allowed during the active subscription period. Once purchased, refunds will not be provided for any unused portion of the term. We take the security of our customers very seriously. Read our Terms of Service at https://sunnystudio.wordpress.com/2018/08/03/interval-timer-terms-of-us/ and our Privacy Policy at https://sunnystudio.wordpress.com/2018/07/31/interval-timer-privacy-policy/ Attributions: Lock by Maxim Kulikov from the Noun Project Premium by Gregor Cresnar from the Noun Project

About

RUN interval

This app simplifies interval and Fartlek running by allowing you to set custom targets for time or distance during hard, easy, and rest efforts. It offers detailed post-run summaries, audio and visual feedback, and an Apple Watch app for enhanced training.

Highlights
  • Customizable interval sessions
  • Time and distance targets
  • Distance Goal option
  • Audio and visual feedback
  • Detailed run summaries
  • Apple Watch app
  • Strava sharing
Features
Read full description

Easily set up and record your Interval and Fartlek running sessions. With the flexibility of using time and/or distance as interval targets for your "Hard", "Easy" and "Rest" efforts. The simple but highly configurable interface on your phone and watch will have you running sooner. Now with a Distance Goal option for your session. Along with great audio and visual feedback, detailed post-run summary, share your runs to Strava, and a full-featured Apple Watch app. You can also record your regular runs with voice-over calling out distance and pace feedback. Key Features: • Easily create flexible custom interval sessions. • Utilize three effort targets "Hard", "Easy" and "Rest" in each set, targeting time or distance (meters or miles). • You can "Skip" any of the three efforts to create flexible sets, like building a progressive intervals session. • NEW: Set a Distance Goal for your session, that repeats the sets from the start until the distance has been reached. • Set a Warm-Up and Warm-Down timer or distance around your session. • Clear and easily glanceable visuals and audio prompts, including vibrations. • Voice-over prompts to save you from looking at the screen, great for iPhone or headphone users. • Voice-over prompts include the upcoming intervals effort and time/distance amount, and your last intervals average pace and heart rate. • Full-featured Apple Watch App! • Heart Rate Zones! (see description below) • Indoor Mode, no GPS, for treadmill running. • Sound Mode, for normal, discrete or silent audio prompts on your watch. • Vibration feedback on both the phone and watch. • Detailed run summary, showing pace for hard and easy efforts. • The run summary also includes interval breakdown, distance breakdown and heart rate details. • Play music or podcasts while running and still hear the audio prompts. • Sharing. Share a summary photo with your friends. • Private data. We don’t send any of your data to a server or share it with anyone. Session Types: • Normal Run – Record a normal run, long or short. • Record Intervals – If you run with a group or do an undefined session, then use the Record Interval option. It allows you to manually change between "Hard" and "Easy" reps, allowing you to record your session. • Custom Intervals – Our fully flexible intervals that allow you to use time and/or distance for the efforts. Add multiple intervals sets together to create the session you want. Sharing: From the summary screen, you can share your runs with friends or across social media. If you want to share directly with friends or across other social media, you can share a summary image with the details of your run. Heart Rate Zones: (Apple Watch Only) Zones are displayed as grouped percentages of your maximum heart rate. Giving you an indication of your current work rate based on your current heart rate. Just enter your maximum workout heart rate into our Settings screen and they will display on your Watch the next time you run. Zone 1: Very Light Effort 50-60% (Gray) Zone 2: Light Effort 60-70% (Blue) Zone 3: Moderate Effort 70-80% (Green) Zone 4: Hard Effort 80-90% (Yellow) Zone 5: Maximum Effort 90-100% (Red) Privacy: We don’t want to know where you have run, that's for you to worry about. We don’t send any of your data to a server or share it with anyone you don't want too. We keep your running records safe in Apple Health so you have control. Apple Heath gives you the control over who accesses your data. We only write and read the data we record from your running. Feedback: And because we don't send any data to a server, we need you to send us feedback and suggestions. Hit the Support link below or visit our website to contact us.

Screenshots

Interval Timer ++4 screens
RUN interval4 screens

Verdict

The call

The clearest difference is ads: RUN interval at none against Interval Timer ++'s shown. Interval Timer ++'s advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (15K vs 1K). On price, rating, review sentiment 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 8 in-app purchases, starting at $0.99 per 2 months and RUN interval sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Interval Timer ++ against 4.7 for RUN interval. That said, the two scores are not equally well evidenced: Interval Timer ++ has 15K ratings behind it against 1K, so its average is the more settled of the two. Written reviews split almost evenly too, at 78% and 77% positive.

UpkeepUpdate frequency

Interval Timer ++ ships an update every 3 weeks, RUN interval every 3 months. Both last shipped on September 24, 2026.

Scorecard4 real differences · 6 level
Interval Timer ++ versus RUN interval: the parameters behind the verdict, then further details
ParameterInterval Timer ++RUN interval
PriceFreeFree
Rating4.8 (15K ratings) — better4.7 (1K ratings)
Positive reviews78.0% of reviews — better77.2% of reviews
Number of ratings15K — better1K
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod, Apple Watch
Requires iOS12.0 — better15.6
Further details — not scored
Size87 MB34 MB
Age rating4+4+
DeveloperSunny StudioCAN YOU HEAR ME SOFTWARE

Customer experience

Interval Timer ++

All ratings14,778 ratings
Positive95.9%
Neutral1.7%
Negative2.5%
Written reviews536 reviews
Positive78.0%
Neutral7.5%
Negative14.6%

RUN interval

All ratings1,003 ratings
Positive94.3%
Neutral1.6%
Negative4.1%
Written reviews189 reviews
Positive77.2%
Neutral5.3%
Negative17.5%

Bugs and requests

Interval Timer ++

Reported bugs

3 issues
  • Timers not working correctly after app updates
  • Custom timers not saving or syncing across devices
  • Unexpected pausing or stopping of timers during use

Requested features

4 requests
  • Ability to name and save custom workouts
  • Option to adjust rest time for individual exercises
  • Countdown beeps or voice cues during intervals
  • Integration with Apple Watch and other fitness devices

RUN interval

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Interval Timer ++

Subscriptions5
  • Interval Timer Pro7 Days trial$0.992 Months
  • Interval Timer Pro3 Days trial$0.997 Days
  • Interval Timer Pro$1.997 Days
Show 2 more
  • Interval Timer Pro3 Days trial$1.991 Month
  • Interval Timer Pro for a Year7 Days trial$5.991 Year
One-time3
  • Premium Timer for One Week$2.99
  • Premium Timer for One Year$7.99
  • Premium Timer for Entire Life$8.99
2 purchases

RUN interval

One-time2
  • The full RUN interval$1.99
  • The full RUN interval$3.99

Questions

Is Interval Timer ++ free?
Interval Timer ++ is free to download, with in-app purchases available.
Is RUN interval free?
RUN interval is free to download, with in-app purchases available.
Which has better reviews, Interval Timer ++ or RUN interval?
Interval Timer ++ is rated higher. Interval Timer ++ averages 4.8 out of 5 from 15K ratings, while RUN interval averages 4.7 from 1K ratings.
Do Interval Timer ++ or RUN interval have ads?
Interval Timer ++ shows ads; RUN interval does not.
Which is updated more often, Interval Timer ++ or RUN interval?
Interval Timer ++ ships an update every 3 weeks, and RUN interval every 3 months. Most recently, Interval Timer ++ was updated on September 24, 2026 and RUN interval on September 24, 2026.

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