Interval Timer Pro
Timing for HIIT Training
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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.

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
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User Rating

4.48 out of 5

574 ratings in United States

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Ratings History


Super buggy. Freezes a lot. Can’t turn iphone sideways either.

Dr finch on

Please update your app. It’s a shame that such a good idea is wasted by poor programming.

Bad app

Funds are on

It is bad, only works at the first couple cycles, then it won’t alarm again until you touch it. We need it to Continue alarm every 15 minutes, but I have to alarm this app every time.

Great interval trainer whatever your objective

79 trainee on

I use it to time my Tim Anderson Original Strength routines as I progress through his reset routines of rocking and rotation movements restore my vestibular system. I am Pleased for it makes a daily record of my workout and times. Time of more than one session is consolidated for the day. Wish it would automatically integrate time into my Apple phone health app which records my steps

Best interval app there is!!

patberg on

My husband and I use this app 3-4x/week for various running and biking workouts (we are triathletes). By far the best interval timer app we have tried! Allows use to customize a plethora of workouts to fit our needs. Have recommended to friends and coaches as well. Very satisfied!!

Great app needs to fix some bugs though

David the Hoos on

Near perfect app for intervals. Allows for all types of custom intervals from basic to complex. I only give it 4 stars because the screen doesn’t gets jacked up when going into landscape mode. It zooms into the bottom half of the screen then gets stuck there. The only way I can make this app work properly is to lock my phone into portrait mode. PLEASE FIX THIS BUG🙏🏼!!!!!


SRK-Kajol/Shahid-Amrita on

With the iOS 16.2 update, end of workout notifications are not working

Apple music library wiped out

Aryeh@ on

Thank you Mr. Cook. When you released the latest IOS upgrade it disabled my Apple music library. This is the third time it happened. As with the two previous ones, I had to troubleshoot it by myself (troubleshooting on line with even the a senior afvisor takes just as long; as my lifetime of 24 hours or more of troubleshooting with such wonderful people – truly wonderful professional – attests they are just as thwarted by the IOS BUGS) for four hours often and on for a week(inc signing in and out of everything). Not the first time this is happened. I think it’s because m each time you release an upgrade, it it wipes out my credit card information. But who knows maybe it was just signing in and of apple tunes. Strange because I have a renewing paid up subscription to Apple Music and it was fully pay for it in before this upgrade. I was so frustrated I bought another subscription for Apple match for $27, Which seems to be a necessary part of re-activating Apple Music. I still cannot get the Apple Music playlists back or the personal playlist I created. When I pull those up there is no music in them. I I don’t just go through this trouble because I pay for Apple Music. I do it because I love it and play it on my phone constantly throughout the day. I assume the Apple wants more subscribers to the service. If so, I humbly suggest, is Aamir Consumer, that you avoid this problem in future upgrades. M To compensate us for this, Please give us a Killswitch to stop our kids from playing games on their screens, which makes my teenagers meltdown. In other words, give me the adult organizers of family share ability to disable all apps used by child members of a family share group to block their use of the phone even altogether, independently of the ineffective such features counting by ones ISPs Comcast, Verizon etc. But I the ISPs would lose the revenue thev generate selling streaming data. In the interest of transparency, would please release the contract terms for the for Syd and the amount of money that you obtain from such agreements.. I would eat my hat if you don’t share in that revenue – directly or indirectly. You may counter that I can simply turn off the Wi-Fi but of course0f course the rub is that the kids can simply turn on their data streaming, when I disable or Wi-Fi router ((which by the way is now built into the ISP cabe modem so I will lose my ability to access Wi-Fi). Perhaps I should write to my senator to ask you to testify before the senate inter

Simple and effective

Romli490 on

Works really well for basic gym needs. I use it all the time.

Love this… but no longer Supported with new iOS

Dr finch on

Please update! Error when switching views on new iPhone stops functioning

Perfect for my physical therapy exercises

KAP-10 Mike on

Because I have a bulging disc in my back and plantar fasciitis, I have a number of exercises to keep track of, manage the timing for each and log when I’m done. This app is great, easy to "program" and use. The ability to also play songs from my playlist helps reduce the monotony as well. I’d recommend this to all who need to have a manageable and configureable list of exercises.

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App Info

Shanghai Fenghe Information Technologies Co., Ltd.
Recent version
4.2.0 (4 years ago )
Released on
Oct 7, 2010 (13 years ago )
Last updated
4 days ago