# Interval Timer > Customizable interval training timer for workouts, runs, and sports. (iPhone/iPad app by Plain and Simple Software.) - Source: https://appshunter.io/ios/app/interval-timer/id287827994 (this page in markdown: same URL + `.md`) - Developer: [Plain and Simple Software](https://appshunter.io/developer/286228075) - Category: Health & Fitness, Lifestyle - Price: $0.99 - Rating: 4.33/5 from 3 App Store ratings · 78 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 17 MB - Languages: English - Released: 2019-01-31 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/interval-timer/id287827994/reviews.md ## What is Interval Timer? - Review - "This seems like an amazing piece of software. Has the ability to edit round times, rest times, high intensity and low intensity sessions. It's exactly what I have been looking for, I can use it for running, free weights, mma, boxing or any type of interval training. Even CROSSFIT." - by mmafightlab.blogspot.com ------------------------------- - Description - The Interval Timer was the first interval timer available in the AppStore and, as a result, the most refined. Don't be fooled by knock-offs (other developers copying our interface and layout)! The Interval Timer is a fully functional interval training timer. It is now compatible with iOS 8. It allows you to specify an overall workout time as well as a Low/High intensity interval and rest time between sets. During the set, it will alternate between the high and low intensity intervals helping to increase stamina. This is perfect for cycling, running, lifting weights, exercise, workout, stretching, boxing, MMA, martial arts, circuit training, Crossfit, HIIT / HIT, etc. IntervalTimer will run in the background, even if you switch to another App. It will also continue to run when the screen is locked. The sound themes let you tailor the sounds to your desired activity. Don't like any of the dozens of preinstalled sounds? Don't worry! You can record your own sounds. Asymmetrical intervals are easy to set up so it is easy to workout with Tabata intervals ("High Intensity" = work, "Low Intensity" = rest). You can set the intervals to the same duration for symmetrical intervals. Working out to music is not a problem. Start you music playing in the iPod app, then start IntervalTimer. The sounds will play over top of your music without interrupting it. If you have any request for a new sound theme or feature, or have problems with this App, please email support@plainandsimplesoftware.com. We listen. Interested in sparring? Check out our "RoundTimer" App. Want more control? Check out "UltraTimer". Want full programmability and randomized intervals? Look at "UltraTrainer". ## Key features - Customizable round times - High/low intensity intervals - Rest time settings - Background operation - Customizable sound themes - Asymmetrical interval support ## Recent user reviews (10 of 78) All indexed reviews: https://appshunter.io/ios/app/interval-timer/id287827994/reviews.md ### 5/5 — Good stuff *2021-02-09* I use this all of the time and especially in combination with a music app. It does everything that I need it to without any fuss. Good, reliable no nonsense timer. Xx ### 4/5 — Nice Timer *2018-11-22, version 7.2* Wish it was Apple Watch compatible ### 1/5 — Useless update *2014-10-20* I've had this interval timer for a long time & it's been brilliant(5 stars)...until this week. It was updated overnight and not for the better. Each time I open a preset interval sequence, it 'logs out' and returns to my home page,at least for the first 3 attempts....really unhelpful. ### 4/5 — Solid app. Does what it's supposed to. *2014-10-17, version 7.0* Great app. I do miss the last version's full screen tap to pause feature. The pause button is too small on an IPhone to easily tap the first time during a difficult workout with my fat, clumsy fingers. ### 5/5 — Silly users *2014-06-11, version 5.3* I've had this app since it was created and I've never had an issue with it. Always opens and runs flawlessly. I wish it could set up different timers between "sets" but that's just being anal. Get the app and enjoy. ### 5/5 — Running intervals & tabata awesome *2013-08-21* I was in need of a functional app to set separate intervals to train for running intervals and this is perfect. I love that you can save workouts with a name so I can have stairs, running & tabata all saved and ready. The best app - I tried two others that just did not have the flexibility as this one. I love that I can say do 10 reps of the set doing which has been planned out by my trainer. ### 5/5 — After all the research... *2012-06-20, version 5.3* Yes indeed! I finally found the interval timer app that is the best, and it works under fire! Wether your Ipod is off or you're on another app, the timer still runs in the background like real time. It took me awhile to figure out low and high intervals, but I so get it now. Your high interval could be your actual work out while your low interval could be your resting time. I like to think of the low interval as moving on to the next weight work out apparatus. And I figured out that rest means end of the number of sets. Or you can make rest your interval if you set the high or low interval to zero! I'm rambling on because this is truly a great app that I tested. I should be ok at the gym tomorrow and onward. ### 5/5 — Invaluable *2012-06-09* Excellent gym companion. Use pretty much all the time with my cardio ### 5/5 — Street jitsu association *2012-01-07* What a fantastic App this is ! Easy and simple to use ideal for our kickboxing club for timing rounds. And because it's on my iPhone it's portable and I can use it anywhere. Most definately recommended. ### 1/5 — was good till update *2011-10-18* was good until last update now keeps crashing. Sounds dissapear halfway through workout. Timers reset to for no reason to standard settings!! What happened? ## Frequently asked questions about Interval Timer ### What does the Interval Timer app do? The Interval Timer app is a fully functional interval training timer designed to help users structure their workouts. It allows for the customization of workout duration, high and low intensity intervals, and rest periods between sets, making it suitable for a wide range of physical activities. ### What are the key features of the Interval Timer? Key features include the ability to set specific round times, edit high and low intensity intervals, and define rest times. The app also supports asymmetrical intervals for protocols like Tabata, offers customizable sound themes (including recording your own), and runs in the background even when the screen is locked. ### Is the Interval Timer app free to use? Yes, the Interval Timer app is available for free. Based on the provided information, there are no in-app purchases or advertisements mentioned, indicating it is a completely free application. ### What types of workouts is this app suitable for? This app is ideal for a wide variety of interval-based training. It's perfect for activities such as cycling, running, weight lifting, general exercise, stretching, boxing, MMA, martial arts, circuit training, Crossfit, and HIIT/HIT workouts. ### Can the timer run while I listen to music? Yes, the app is designed to work seamlessly with your music. You can start playing music from your iPod app before starting the Interval Timer, and the timer's sounds will play over your music without interruption. ## Version history (last 5 releases) ### 7.2 — 2019-01-31 This app has been updated by Apple to display the Apple Watch app icon. - New look - Fills iPhone X screen - Fix crash when recording sound - Fix crash when removing preset ### 7.1 — 2017-10-06 - Update for iOS 11 support ### 7.0 — 2014-10-16 - Updated for iOS8 - Fullscreen interface - Interface updates ### 5.3 — 2011-10-26 - Fixed preset name/file handling ### 5.2 — 2011-10-21 - Fixed issue with sounds playing after 10 minutes or so - Fixed issue with saving preset with slashes in the timer name ## Apps similar to Interval Timer | App | Rating | Price | Category | | --- | --- | --- | --- | | [MyTRCare - Stroke Exercises](https://appshunter.io/ios/app/mytrcare-stroke-exercises/id1562305148) | 4.8 (11) | Free | Health & Fitness | | [Fit-Timer](https://appshunter.io/ios/app/fit-timer/id1577668390) | — | Free | Health & Fitness | | [Way of the Rope](https://appshunter.io/ios/app/way-of-the-rope/id1618489516) | 4.2 (19) | Free | Health & Fitness | | [HIIT Interval Training Timer - training timer](https://appshunter.io/ios/app/hiit-interval-training-timer-training-timer/id641169116) | 3.0 (2) | $0.99 | Health & Fitness | | [Oxxy: Mindful Breathing](https://appshunter.io/ios/app/oxxy-mindful-breathing/id1589652547) | — | Free | Health & Fitness | | [QuickFresh](https://appshunter.io/ios/app/quickfresh/id1581867997) | 5.0 (4) | Free | Health & Fitness | ## More apps by Plain and Simple Software - [Round Timer](https://appshunter.io/ios/app/round-timer/id286228072) - [UltraTimer](https://appshunter.io/ios/app/ultratimer/id289429364) - [UltraTrainer](https://appshunter.io/ios/app/ultratrainer/id343700506) All apps by Plain and Simple Software: https://appshunter.io/developer/286228075 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*