As an aside, cash app is pretty different to Revolut. The former is a payments platform and the latter is a bank. I think the US doesn't really have much of a true equivalent given their sclerotic retail banking sector (how on earth do the big banks get away with charging for current accounts, inter-account payments, cash withdrawals... it genuinely beggars belief)
Honestly, get a trainer / coach. Ideally one who will help you both on the training and nutrition side. You can even get one of those online ones (it's what I did). When you have children, you don't have the time to think about this stuff yourself, so outsourcing it to a trainer makes a lot of sense.