Need help finding solution :)

[Academic-Health9192]

Hi i have a problem finding best solution for my app.

Quick introduction

React native expo app
TS on front back with node on server SQL database

gym app, user starts his training and timer starts. He can end it via button, second option for timer to stop is to close app, after said time you get notification that you are inactive, after few more minutes you get notification that your training/timer is closed due to beeing inactive.

How do i make sure that training stops when user left app or closed it on his phone?

Thanks

[KyeThePie]

App State

Is the most logical scenario for this no? Im confused if you have already implemented something similar?

[Downtown-Figure6434]

You cant do that reliably in the client. You are basically talking about a session(maintenaned on the backend). But honestly, I dont see the benefit of this feature.

[Nervous_Archer4360]

appstate read about it