Cut the Cord!

This app is designed to be used in conjunction with the ProChrono Digital chronograph (model CEI-3800) and the Digital Link Bluetooth accessory (model CEI-3812) OR the ProChrono DLX (CEI-3820). It provides a modern user interface for controlling the chronograph as well as collecting and managing the velocity data. Now you can connect wireless to your chronograph using a tablet or smartphone!

Whether you are interested in testing your loads or your shooting skills for speed and consistency, Competition Electronics has a product to suit your needs. We have been producing quality shooting products in the USA since 1982. Our goal is to provide a long lasting product that is serviceable and affordable.

What’s New

Version 1.3.1

- Unit display updates

Ratings and Reviews

4.3 out of 5
9 Ratings
9 Ratings
Rod Palmer2 ,

Glad I purchased from Competition Electronics!

Works great for me. Setup was easy. I shoot outside in good weather so I have never experienced problems with reading shots as some indoor shooters might. Always runs fine using Bluetooth on my iPhone. I use it about once a week. It’s consistent and reliable.

Absolutely LOVE the new feature where I can attach a picture to the string. Now I can have my groups in digital format in the same place as my data. Thank you for listening to user feedback!! This app just rocks.
Thanks again!

12Sh00ter ,

Works well but not in landscape mode

I just got the new DLX model. It worked fine after I found the proper distance to be from the screens. I carried my iPad Pro so I could look at the data on a larger screen than my iPhone X. The app doesn’t work in landscape mode & I don’t have a case that lets me us the iPad in Portrait mode. That’s my only complaint so far.

FussionT ,

Works great if it’s updated..

Slow on app update..


Competition Electronics, Inc.
8.4 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2018


  • Family Sharing

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

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