4iiii 4+

4iii App

I wished I had read some of the reviews. To start with, support was good to identify my problem which was I got a new bike and now have two sets of Precision crank meters - the App does not support multiple sets of meters.
First thought that came to me was, “Am I the only person that has multiple sets of these crank meters?” Answer is no. If you have more than one set of crank meters you have to have a unique device just for that set.
I can only hope that 4iii app designers read this and at least consider adding either the option for multiple meters or at a minimum a notice on the app that gives the user an error message to tell the user can not attach multiple meter devices.

When it works, it works well. But when it doesn’t…

It’s VERY frustrating, especially when you don’t realize the ride somehow stopped recording until AFTER your ride is done. And there is no partial FIT file that at least captured part of the ride before it stopped. Like someone mentioned, it may be the notifications. Was hoping to avoid using my HRM strap for my commutes but not at the expense of potentially missing a whole ride.

And not supporting multiple power meters is a pain.

Another pain point - it seems to keep running in the background even after a ride, drawing down the Watch battery.

Developer Response ,

We apologize for the frustrating experience. After long investigation we concluded the issue is caused by an Apple framework bug connected with notifications. The app is not crashing or failing, but is being terminated by the system for excessive CPU use - incorrectly, because the Ride app doesn’t receive a backgrounding notice when a notification overlay presents. The good news is that this issue does not appear to be a problem on watchOS 10, but only on watchOS 9. If you need to stay on watchOS 9 a possible workaround is to create a Fitness Focus so that notifications don’t overlay the app.

Thanks for your feedback!

Basics are ok, bike index integration laughable

This app finds my power meter without issue and the battery meter works as expected. The zero offset calibration seems to work well but there is no indication of an offset number so it is hard to tell if it is reasonable or consistent.
The link to bike index for me was laughable, worst I have seen in a long time. I entered my bike on the bike index website but linking the power meter to the bike via the app was beyond unstable, the bike would disappear, all entered text would disappear. I gave up after 5 tries, all with the same result.
I haven’t seen a firmware update yet so I can’t comment on that functionality.