Comment by zduny

Flutter for the UI. Rust for the listening, and pitch detecting backend. Connected the former with the latter using flutter_rust_bridge.

More details on Rust backend:

For listening (getting audio signal from microphone) I used:

- Android: https://crates.io/crates/oboe

- native desktop/iOS (not currently released): https://crates.io/crates/clap

- Web: https://crates.io/crates/web-sys (so basically JS Web Audio API called from Rust compiled to WASM).

For pitch detection:

- https://crates.io/crates/pitch-detection