Well, in Celeste you don't have the grappling gun, but an 8-directional dash instead, but if you enjoyed this game, you'll probably enjoy Celeste too.
Edit: if you search "celeste classic" on itch.io, you'll find a game called "CELESTE Classic" by Maddy Makes Games. It's a free old pico-8 version of "Celeste" where you can get a feel for what the game is like. Obviously, "Celeste" is a lot more polished.