You can earn a max of 60 coins a day, and a max of 210 coins a week. This allows you to go hard on alternate days, while taking a good rest in between to recover. Of course, you can also choose to spread your workouts however you want throughout the week.
More importantly, you should workout in a sane and safe way, and build up your fitness over time rather than trying to maximise your daily or weekly cap all the time.
No! We understand that there are many fitness apps out there and everyone has their favorites that work for their needs. We have an activity sync feature that allows you to grab the activities you've done on other fitness apps (via Healthkit or Google FIT), and bring them into nFIT. You will then be given nFIT coins for eligible activities!
Make sure to sync your activities frequently, as points will only be given for activities completed in the last week.