Improve the tempo slider
The tempo slider is a bit annoying for two reasons: when you try to set the tempo, your finger covers most of it making adjustment harder, and the first tap changes the tempo immediately.
There are already ideas about making it bigger, but I don't think it really solves the usability issues. It would be great if you could leave the current tempo in place if I start dragging it. This way I wouldn't have to aim for the right place immediately - just swipe left at any place of the slider to slow down and right to speed up. For big adjustment the current tap behaviour could stay.
Jaime April commented
It would be great to be able to manually enter a start point (ex: 65% rather than trying to get slider to land exactly on it)
My suggestion was based on the suggestion "In song practice mode, widen the speed adjustment bar" by Mike, which is avaliable here: https://yousician.uservoice.com/forums/296820-feature-requests/suggestions/33009514-in-song-practice-mode-widen-the-speed-adjustment
There are some users who say that there are songs which are very hard to play. If you're playing a red level song, you probably will think it's very hard or even impossible to play on the right tempo and so, you go to Practice Mode to reduce it. But, you may think it is still very hard. And you reduce the tempo to its minimum: 25%. If you think it needs to be more slowed down, then it's time to widen the tempo bar. The bar should be widen from 25%-145% to 0%-200%. It allows you to play very hard songs easier and you can train playing songs that you dominate at the double of the tempo! Why not?
Dave S commented
Yes. Even on the iPad the slider is very hard to adjust. Needs to be much larger.
Joe King commented
In mobile, the tempo slider is very small and hard to articulate well. Please make the slider expand to fit the length of the screen while I'm trying to adjust it.