Unacceptable Data Loss: Unstable Third-Party Software
That trust is misplaced. After completing a strictly controlled 36-minute workout and tagging it as 'Other' upon saving, the app suffered a critical crash. It completely failed to write the .FIT file to the watch's hard drive, permanently deleting the session.
This is not a minor software glitch; it is the outright destruction of a valuable, well-performed workout. The permanent loss of these specific cardiovascular parameters actively corrupts the physiological data required to accurately evaluate progress and structure future training patterns.
Do not pay for software that jeopardizes your data integrity. You can achieve the exact same physiological targeting securely by setting custom High/Low Heart Rate alerts directly within Garmin’s native, crash-proof activity profiles.
Response from developer
Updating this, because part of what I wrote here is no longer true. The "Other" activity type that destroyed this session is gone, and that specific failure cannot recur. But I said saving was reliable, and it was not something I could stand behind. A later session on the same watch model was lost a different way. What changed since: the watch app no longer pushes any menu over a live recording, and that component was present in every reproduction we have. Stopping and discarding now happen on the workout screen itself, with two presses required to throw a session away. I am not calling this closed. It stays open on our side until the field data says the failure has stopped, and one scenario is still untested. That is the honest state of it. Rod, Founder of Zone2AI
Overall great stuff
Response from developer
The three-weeks line is the most useful thing anyone has written about this app, and it changed how I explain it to people. Zone 2 gives you almost nothing on day one, which is exactly why most people quit before it starts working. Congratulations on the 15:49. Rod, Founder of Zone2AI
Responsive developer and solid product
Response from developer
Thank you. You've named the thing I care most about getting right: most of what's customisable in here exists because somebody wrote in and asked. If you ever hit something that doesn't work the way you'd expect, email me directly and it'll get looked at the same day. Rod, Founder of Zone2AI
Great UI
Response from developer
Thank you. The routine part is the harder half, so I'm glad that's the bit that landed. Zone 2 only works if it's easy to keep doing. Rod, Founder of Zone2AI
Amazing App!
Response from developer
Kathleen, thank you. You did the training; we just kept score and nudged you to hold the zone. Zone 2 is the entire point of this app rather than one tab buried behind nine others, and Garmin is where most of our work goes. If anything ever looks off, email me and I will dig into it personally. Best, Rod. Founder of Zone2AI
