SwiftPen: AI Writing Keyboard

SwiftPen is your AI writing assistant, always one tap away.

While typing in any app — Messages, Mail, WhatsApp, Notes — simply switch to SwiftPen from your keyboard row. Instantly transform what you've typed with powerful AI modes:

• Rewrite — Say it better, instantly • Clarify — Make complex text crystal clear • Shorten — Trim the fluff, keep the meaning • Formal — Professional tone in one tap • Polish — Fix grammar, flow, and style • Custom Modes — Create your own AI writing rules

See exactly what changed with a built-in diff view. Accept or tweak with one tap.

Powered by frontier LLMs. Works in every app. No copy-paste required.

SwiftPen is the fastest way to write better, from anywhere.

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