What mindfulness/meditation apps are you using?

I'll start with my daily driver: Smiling Mind (https://www.smilingmind.com.au/).

Pros:

• has no ads, content is free and is made by an Australian non-profit;

• has lots of programs targeting different needs: simple meditations, programs designed to help improve sleep, short breathing exercises for when you're in panic, stress relief, concentration...

• there's also a 30-day "mental fitness" challenge to keep you hooked;

• wellbeing check in and reminders;

• offline downloads.

Cons: (so far)

• starts feeling repetitive once you use it for a few months but I guess that's normal, exercises are still cool;

• not open-source.