BOiTokenomics.

Perfect your prompts.

Check spelling and style, clean up formatting, then refine. Refine only ever makes text shorter.

Ready to write
Spelling, style and grammar are checked on this device
Click an underline to see suggestions. Free. Fixes grammar and wordy phrases on this device.
Convert
Underlines: spelling style grammar

Stats

Characters
0
0 without spaces
Words
0
Sentences
0
Paragraphs
0
Lines
0
Tokens
≈0
Estimate. Models count differently.
Add a price to see cost
Typing speed WPM
—
— average — peak last 10s
0 min readat 200 WPM
Letter density

    Draft

    Review changes.

    Refining…

    Original cut
    Refined new

    Your draft only changes when you replace it, and you can undo afterwards.

    Settings.

    Reopen my last draft

    Open where you left off. When off, each visit starts on a blank draft. Your library stays either way.

    Refine tiers

    API models

    Not connected

    Connect your own key to load every model it can use. Pick one here or in the Refine menu.

    The key stays in this tab's memory, is sent through this app's server only to your provider, and is forgotten when you refresh or disconnect. Get an API key ↗

    Grammar

    On this device

    Grammar is checked as you type by Harper, an open-source checker that runs in your browser. Nothing is sent anywhere.

    For a closer read, connect an AI provider above and use Deep check. under the editor. It sends the draft to your provider only when you click it.

    Your library

    Prompts, their notes and folders are saved in this browser only. Export a copy to back them up or move them to another browser.

    Keyboard shortcuts

    Refine draft or selection⌘/Ctrl + Enter

    Save a selection as a new prompt⌘/Ctrl + S

    Show or hide the sidebar⌘/Ctrl + \

    Rename a focused library itemF2

    Undo / redo⌘/Ctrl + Z / ⇧ Z

    Open suggestion at cursorAlt + Enter

    Close dialog or leave focus modeEsc

    No account, no analytics. Your library stays in this browser.

    Placeholders

    Fill in.

    Type a value for each placeholder. Blanks stay as they are.