There’s no app that does that.
I’ve found LLMs to be fairly unreliable when it comes to reading schematics from an image. Lots of mistakes. Also, even it does read it accurately, it still gets a lot wrong about general electronics in the context of guitar pedal circuits.
I have been able to generate schematics by having the LLM create KiCad projects. They are usually a mess visually, but you can straighten the lines out after opening it. I mention this because I imagine one could get better schematic results by having it read KiCad files. They are basically code, and these tools have been optimized for developers working with code. But that still doesn’t solve the problem of the LLM making mistakes with basic electronics questions.
For the core of what you want, it sounds like LTspice would be the tool to use.
So if you solved the reliability issue with understanding schematics, you could build a multi-agent flow with skills for KiCad and LTspice, with an integration layer between the two.