Why I’m building SimGate: An SMS API without per-message fees

[Sascha]

I’m a full-stack developer who’s always looking for simple, affordable tools, especially when building for side projects or indie SaaS ideas.

Recently, I ran into a familiar problem:
Sending SMS through APIs like Twilio gets expensive fast.
Even basic features like 2FA or delivery alerts can become unsustainable when you're paying per message, especially on low-margin or small-scale projects.

That’s when I decided to build SimGate — a lightweight developer tool that lets you send SMS through your own Android phone and SIM card, using a clean API, without per-message fees.

Who is SimGate for?

• Indie devs building internal tools or MVPs
• Solo SaaS founders with <1k users
• Local delivery apps, clinics, or automations that need recurring SMS
• IoT/sensor projects that send alerts
• Anyone who’s tired of “$0.something per SMS” adding up over time

How does it work?
SimGate connects to your phone via a mobile gateway app. Once paired, you can:

• Send SMS using a secure API
• Avoid cloud provider markups
• Pay a flat monthly subscription instead of per message (free plan will be available as well)

This way, your phone becomes your own private SMS gateway.
I’m keeping the first version lean — just enough to get real use cases working.

Want to try it?
I’ve opened up a waitlist to gather early interest and invite a few testers as soon as the MVP is live.

If this solves a problem for you — or just sounds interesting — you can join here:

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Thanks for reading — and if you’ve ever struggled with SMS pricing or built your own DIY solution, I’d love to hear your story in the comments!

Nik
dev@simgate.app

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