Useful apps

What Apps are you guys using on your Garmin devices?

I keep seeing a bunch of discussions here and there about various apps, but I realized I've only used a watchface app and these 3.

Any other nice to have / mandatory apps ?

P.S. If it matters, I'm doing biking, swimming and running.

What Apps are you guys using on your Garmin devices?

I keep seeing a bunch of discussions here and there about various apps, but I realized I've only used a watchface app and these 3.

Any other nice to have / mandatory apps ?

P.S. If it matters, I'm doing biking, swimming and running.