While building a Telegram Mini App recently, I hit the same wall every TMA developer knows: Code your app locally. Spin up ngrok (hope it doesn't crash). Go to @botfather , set the web_app URL to the tunnel.
Source: [Dev.to](https://dev.to/dl1ar/i-built-a-devtools-for-telegram-mini-apps-so-you-dont-have-to-debug-on-your-phone-30m9)