About Synapse — Private AI Typing for Android
Who makes Synapse, why it exists, and our privacy philosophy for on-device mobile AI.
Synapse Keyboard is made by Smafty. It is an Android keyboard built for people who want on-demand AI help where they already write: in messages, email, social apps, and work chats.
Synapse focuses on deliberate AI actions. Normal typing stays on the device. When you select text and run a prompt, the service can help with grammar, translation, tone, or a custom instruction you choose. The keyboard is free to download, includes trial credits, and uses pay-as-you-go top-ups rather than a subscription.
For product or account support, contact support@synapsetalk.com.
Why Synapse exists
We kept seeing the same pattern: people copy a message out of WhatsApp, switch to ChatGPT, paste it, wait, copy the reply, and switch back. That workflow costs seconds on every message, and it breaks the flow of a conversation.
Synapse puts that AI step back where the writing happens. Select text, tap the Synapse icon, pick a prompt, and the answer replaces your text in the same app — no switching, no copy-pasting.
What we believe
- Your typing is yours. Normal typing never leaves the phone. No autocorrect profiling, no next-word learning. AI runs only when you explicitly select text and run a prompt.
- On-demand, not as-you-type. Grammar fixes and rewrites happen when you ask, not by underlining everything you write.
- No subscription traps. Pay-as-you-go credits starting at $5. If you don't use it, you don't pay again. Crypto payments earn bonus credits.
- Honest about limits. English keyboard layout only (AI can write and translate in other languages). Android only, installed via APK. Google sign-in required; AI needs internet.