"it lets you" is correct and usable in written English. This phrase is used to describe the activities or functions that something allows you to do. For example, "This app lets you organize your tasks and set deadlines.".
It lets you edit as you go.
It lets you feel their blood quickening".
It lets you control your steep time.
It lets you stop worrying.
It lets you set "Position" and "Ambience".
Instead it lets you keep the lot.
It lets you in on secrets.
Awesome tool! I started using it one year ago and I never had to look for another app
Ha Thuy Vy
MA of Applied Linguistic, Maquarie University, Australia