Sadly broken
Version 1 of this app was reliable and easy to use. It quickly became indispensable to managing my severe ADHD because it allowed users to stop timers via Siri and Shortcuts and would send out notifications in the background. The few similar interval timer apps that offer Shortcuts control only allow timers to be started. But version 2 is bug-ridden. Problems have included my library of stored timers being deleted (breaking a couple dozen Shortcuts and automations I used to manage my ADHD); a dozen copies of the same timer being created that crash-quit the app when you try and delete them; the Shortcuts command running timers that haven’t been selected; and the latest being timers going off five minutes early and showing the wrong notification message. v2 shouldn’t have been released in this state - users should not pay for an app only to end up being beta testers - but it’s still the only interval timer app that fits my needs. My only options now are waiting to see if v3 (if it’s ever released) will be as reliable and v1 was, hope another dev includes “stop” in their interval timer’s Shortcuts options, or learn how to code and write my own interval timer app.