Countdown timer for interval training or HIIT workout

I like the idea.  Allow a setup in the app for active and rest times.  Or track via heart rate with a vibration to start, and double vibration to rest.

A countdown timer would be very useful - something easy to restart. Useful for making presentations, speeches, teaching - all sorts of things

A similar thread with countdown request: https://support.withings.com/hc/en-us/community/posts/360025051214-Stopwatch-function

When is this going to be added? It's so easy to do (Withings is so close with the timer function) and sooo important for training and health, with a lot of acience behind it. I for instance need to do it for immune function enhancement to cancer immunotherapy. Please add it! I have all the Withings products including two Steel HRs and want to get a scanwatch, but I need a watch that can do interval timing.

Just to be clear about the difference between the timer function and interval training timer. The interval training needs to repeat e.g. a 4 minute (run) timer with a 2 minute (walk) timer without having to repeatedly set a timer on the watch manually

I need a countdown timer with a vibration alert, that can be activated with a simple button press on the watch. With the hardware inside the Move ECG it would be possible - it's just a software issue.

At the very least the countdown timer needs to have a repeat function so at the end of say a 30 countdown you can repeat it instantly with one press without having to set it up all over again.