A substantial redesign and new features!

* Clearer countdown of each stretch and the remaining reps.
* Improved colours for legibility, including dark mode support.
* New "both sides" modes — either alternating or all of one side followed by the other — with easy-to-read on screen indicators.
* Improved sounds
* Revised beeps to distinguish stretch, relax, change sides, and complete.
* Optional speech announcements.
* Improved customisation
* Configurable count-in.
* Configurable extra time when changing sides (sequential only).
* Left-right or right-left ordering.
* Choose dark or light mode or match the system.

Just a minor update with one new feature.

URL scheme, for automation.
• Open the app — stretch-timer://
• Open the app and start the timer — stretch-timer://?action=start
• Open the app and stop the timer — stretch-timer://?action=stop

A shout out to Leon for making the request for this feature.