Nice game, whilst simple the nature of learning to fling yourself works well.
However, after playing up to the "Swing a few times w/o falling" tutorial I couldn't get any further. I did exactly what it said then nothing happened. I have no idea what the game wants from me. What exactly defines "too close" and where am I swinging too if there's no goal. Why not design a challenge or mechanic that specifically is designed around having the player "swing a few times" or something. Forcing the player to do something vague destroyed the game for me. Like is there not a reason you couldn't have the player need to swing multiple times over spikes to the goal? That way the objective is clear, there progress is clear, its just how far they are from the goal. As is I have no idea how close I am to beating it.
Also, the first level didn't feel like a first level, you'd think there'd be a ceiling to latch onto given your just being introduced to the mechanic. Having to tug myself along the floor is a little too annoying to start and isn't a great introduction to the game.