JumJac: Jumping Jacks Counter 4+

Track Jumping Jacks with Watch

晓东 林

Designed for iPhone

    • 4.6 • 29 Ratings
    • $0.99


JumJac makes your Apple Watch a Jumping Jacks counter, it automatically counts the reps of Jumping Jacks, which simplify your workout straightforwardly.

Jumping jacks are an efficient total-body workout that you can do almost anywhere.It is a good alternative to jogging miles on a treadmill or stationary bike. All of these exercises help raise your heart rate. The role of JumJac is to help you better log your training and manage your training data.

JumJac is integrated with the Health app and workouts are stored in HealthKit so your jumping jacks sessions will contribute to closing your daily rings.

What’s New

Version 1.2.1

Hello everyone, thank u for using JumJac, this update includes the following improvement:

• iOS app can display real-time data from Watch.
• Bug fixes and enhancements.
If u have any question and suggestion, feel free to email us at: fitnexhelp@gmail.com

Ratings and Reviews

4.6 out of 5
29 Ratings

29 Ratings

baztard0801 ,

Great App

Works great and is accurate, love this app! I highly recommend it.


settsu ,

Works well

I did need to adjust the sensitivity up a bit and when your hands are in the proper position (palms forward, which was mostly natural for me personally) I found the count to be accurate most of the time. The timer feature is nice. The voice feedback can be a little quiet and the end of time tones sometimes don’t play when my watch has entered sleep/nighttime mode.

King Maximillion ,

Count is way off

With the sensitivity rate on max, I completed 50 jumping jacks and the counter says 16. 😡😡😡

Developer Response ,

Hello King

I think you must have missed the instructions, make sure your palm is facing in front of you while jumping so the watch can count accurately. If you still have any questions about this, please feel free to email me at fitnexhelp@gmail.com


App Privacy

The developer, 晓东 林, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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