Stop guessing.
Start writing prompts that work.

CRAFT turns a rough idea into a structured, model-optimized prompt for ChatGPT, Claude, Gemini or DeepSeek — using the same five-part framework professionals use, in an app that runs fully offline.

↓ Download for Android See how it works

Free · No account needed · Works offline

CContext
RRole
AAction
FFormat
TTone
CRAFT app icon

Five inputs. One professional prompt.

C
Context
The background the AI needs to know.
R
Role
Who the AI should become.
A
Action
The one thing it needs to deliver.
F
Format
The exact shape of the output.
T
Tone
Voice, style, and hard limits.
Built for your model
Output is formatted differently for ChatGPT, Claude, Gemini and DeepSeek — matching how each one actually reads instructions best.
Offline by default
Generation runs entirely on your device. Add your own free Gemini key later if you want AI-powered synthesis too — it's optional.
No invented details
The engine is built to flag what you didn't specify instead of quietly making it up for you.
Save and reuse
Keep your best prompts in a local library so you're never starting from a blank page.

Get the app

Android only, for now.

↓ Download APK

After downloading: open the file, allow "install from unknown sources" if asked, then install.