Browser and App Training Zones Differ

I downloaded the Intervals.icu app earlier this week, and have noticed that the training zone is one level different than it is in the browser-based program.

Yesterday my training zone was gray zone in the browser, but optimal in the app. Today, I’m optimal in the browser, but high risk in the app.

For today both browser and app show Fitness - 44, Fatigure - 60. The browser-based program calculates the form as - 16 (Optimal), and the App puts me at -36% (High Risk)

There is NO intervals.icu App. Not officially anyways.

please revert to your “app” developer .

having said that, there are 2 things

60 - 44 = 16
16/44 = 36%

which seems to be correct. you can select it here.

Thank you! I will check out those links.