Trip tracking app with Harm reduction tips

I usually use timers to track the come up, come down and peak of a trip. but sometimes due to imparment it is not very useful. Reading wavy numbers and doing math can be hard while tripping right?

That's how I got the idea of creating an app with nice charts and graphs that shows exactly how much effect you're supposed ti be experiencing based on psychonaut wiki's timing data and maybe a weight or metabolism speed factor in app setting.

You would be able to choose the substance, from caffein to mushroom whith everyhing in between, the way of intake, amount etc... and a nice graph with an indication of where you are right know will be displayed.

This could be very usefull to nail hippie flipping timings and other less risky mixing (PLEASE follow harm reduction guideline, the app would warn users trying to input two very dangerous interactions or if they are inputting so much quantity that they are going to OD off course)

on top of that, visual feedback could be implemented like instead of a graph, just the screen color changing wpuld be an even simpler thing to understand to someone under shrooms (only tried this and lsd cannot so please feel free to comment if you have more experience!).

1 - Do you know of any app like this already existing?

2 - Would you use an app like that instead of basic timers?