I've unlocked teamwork and top talent, but no idea if i used the app or the in-game strike teams menu's but i unlocked both of these in april/may. I'm on PC.
I have 6 teams to 20 and have been running strike teams from the app since available to do so. I just noticed Top Talent as a recently unlocked achievement. Also recently, I had the app bug where you cannot log into it until you clear the app data cache, which I did the day before I noticed the achievement popping. So the app data cache clearing may be a fix for some.