How do I join the JB4 PRO TestFlight beta?

Tap the Join Beta button above. If the beta is full, keep checking or save the app to get quicker access when slots reopen.

Is JB4 PRO free to use?

JB4 PRO is Free on the App Store. Beta access may have limited features while testing.

Why can't I access the JB4 PRO TestFlight link?

The beta might be full. You can monitor status here, explore similar apps in the same category, or return later.

JB4 PRO

Utilities

4.8

App Description

Smart phone integration for your JB4 performance tuner to change maps, monitor live engine data, record logs, manage fault codes, update JB4 firmware, and much more! Note the JB4 PRO free app requires the JB4 PRO BT adapter and is not compatible with the JB4 Mobile BT adapter....