Show HN: Send SMS from your own Android phone via API
I built a small developer tool called *SimGate*.
Problem: most SMS APIs (Twilio, etc.) charge per-SMS. For small projects, prototypes, or local businesses, this adds up quickly.
What I made: - An Android app that connects your phone to the cloud via WebSocket. - A simple REST API where you send JSON (`deviceId`, `phoneNumber`, `message`). - Your phone sends the SMS using its own SIM plan — no extra per-SMS fees.
Use cases: OTP codes, alerts, internal tools, or any project where you just need reliable SMS without provider costs.
Stack: Node/Express + Websockets (backend).
Demo & docs: https://simgate.app
This is my first SaaS launch. I’d love feedback: - Would you use this for side projects or small businesses? - Any concerns about reliability/security with this model?
Thanks!
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