There doesn’t seem to be many, single leg/arm variations of common exercises. For example, single leg Romanian deadlifts, single leg curls.

The Hevy app has these variations, but for some reason Bevel and some other popular apps don’t have them. I understand they might be niche or just unpopular but they can be very useful for recovery.

It would also be nice to be able to filter exercises based on this premise, I.e, filter by legs > single leg