You concentrate on your workout, Chronic will take care of timing! Anyone who is serious about working out knows that the key is a routine.

Chronic by definition is "Of long duration, continuing or recurring event" and thats what the app is about. Its a simple routine timer that allows you to run through your personalized routine.

Chronic is designed for:
- Workouts
- High Intensity Interval Training (HIIT)
- MMA, boxing, BJJ, martial arts, yoga or any other forms of exercise that alternate between periods of work and rest
- Running, jogging or CrossFit

You can use Chronic in your workout to increase:
- Aerobic endurance
- Cardio endurance
- Muscle strength, size and endurance
- Fat loss

Chronic will make any workout:
- Easier to plan and execute
- More accuracy and consistent

Core features:
√ A beautiful Apple Watch app so you can track your routines from your wrist.
√ Fully customizable routines
√ A run tracker feature with a gorgeous fully size map and route markings
√ Text-To-Speech feedback so you know where you are in the routine (Haptic feedback on Apple Watch)
√ A quick timer feature (time selector up to the second)
√ Routines run in the background with notifications
√ Reminder notifications so you never miss a workout
√ Integration with the Health app and Activity Rings so your workouts count
√ 3D Touch support with home quick actions
√ Optimized for iPhone, iPad (portrait and landscape) and Apple Watch

Other use-cases:
- Cooking with the simple "Quick Timer" feature
- Practicing timed tests, presentations or even simply timing yourself between studying and resting.

Health App
We have added integration with the health app, that means all your workouts will now be saved and available on the Health app (If available on your iDevice and you authorized it). Upon completion of your workout, Chronic will save your workout in the health app and update your activity rings. If you stop your workout halfway, we will prompt you with a messaging asking to save the workout so nothing is lost.

* Continued use of GPS running in the background can dramatically decrease battery life

What’s New

Version 3.1.13

- Fixes crash on Apple Watch

Ratings and Reviews

4.6 out of 5
76 Ratings

76 Ratings

fnm69 ,

Great Interval Timer

I have downloaded multiple interval timers and this is one of the best. It is extremely easy to setup and I really like the big number so I can read it even without wearing my glasses. I practice Yoga on a regular basis and this app is very helpful when creating routines with multiple asanas. I have routines with over 100 asanas and the app works perfectly. This is my new favorite app when it comes to exercise. Currently, I am using it for my yoga, meditation, HIIT, among many others and it works great.

Most importantly, I have been searching for a native interval app for my Watch. I have downloaded mostly all of then and this one is very close to my all my needs. There have been some minor issues but the developer has been working intensively to finding the right fix. I have never obtained such a great support like the one I am getting from Mr. Ace. He has been very responsive by answering emails and phone calls.

I am looking forward to future updates. Keep the good work!

lkksjdfakjsdf ,

Best round timer I have found out there

I have been through a dozed round timers trying to find a short term reoccurring timer that will work with my Apple Watch. Many won’t perform a reoccurring short term timer (like 13 seconds) without paying for it. This one does however I have $300 dollar Apple Watch that does not keep a wake screen in order for my watch to vibrate every 13 seconds for an hour... (70 seconds is the longest wake time and your wrist has to stay up) I love Apple products, however I do require a timer that meets my expectations to get a basic repeating 13 second timer, and for something so plain and basic, I d not desire to pay for something so simple. Is it possible to make this app vibrate the watch every 13 seconds even if the screen is sleeping.

Bgalls88 ,

Needs work! Not enough features

Giving it 2 stars. Here’s why. I found it difficult to create and edit the workouts ie. Circuit training with 1 minute rest tomorrow periods in between. Also the audio didn’t work to alert me when the next interval was starting/ending. You can’t skip ahead to the next interval if you want to start in the middle. Lastly it randomly stops playing and didn’t save the workout ☹️

Developer Response ,


Thanks for the feedback! Most of the features you mentioned are available now! I would love it if you gave the new version a try and I’ll be very happy to hear your feedback again


Ace Green
48.3 MB

Requires iOS 11.0 and watchOS 3.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, German, Italian, Simplified Chinese, Traditional Chinese

Age Rating
This app may use your location even when it isn't open, which can decrease battery life.
In-App Purchases
  1. Apple Watch $2.99
  2. Ultimate Package $3.99
  3. Remove Ads $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

  • Siri

    Get things done within this app using just your voice.

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