Tangentially related, I just finished porting wxWabbitemu (TI calculator emulator) to WASM last week [1]. I recently switched to iOS from Android and sorely missed the TI emulator app. I use my TI-85 from high school as my desk calculator and the primary calculator on my phone.

The UI is meant for cell phones, I don't have a max-width set so it looks funky on a full desktop browser.

[1] https://marwatk.github.io/wasmwabbitemu/