Select text
Highlight text in Mail, Slack, Notion, docs, chats, or anywhere else you're already writing.
Rewrite text anywhere on macOS
Rewrite faster without leaving what you're doing.
SideB helps you clean up, shorten, or reshape text with one shortcut. Select what you wrote, trigger the app, and drop a better version back into the conversation in seconds.
One shortcut
Multi-language
Instant rewrite
Choose the tone. Check the quality.
These examples show the kind of output SideB is built to produce: useful, believable rewrites that still sound like something you would actually send.
Grammar Fix
Minimal edits, cleaner writing
Before
hey i looked through your notes and i think we should make a couple changes before we send this to the client tomorrow.
After
Hey, I looked through your notes, and I think we should make a couple of changes before we send this to the client tomorrow.
Preserves meaning
Fixes punctuation
Stays close to the original voice
Built for the way people actually write.
The workflow is simple on purpose: select text, trigger SideB, choose the rewrite you want, and keep moving.
Trigger the shortcut
Press Cmd + L to open SideB without switching tabs or opening another app.
Replace instantly
Get a better version back fast and drop it straight into the message, doc, or reply you're already working on.
"The best proof is simple: show the text before, show the text after, and let people decide if it's useful."
SideB is not trying to replace your writing. It is trying to help you improve it quickly without adding more friction.
Why this works
People know fast whether a rewrite tool is good enough for them. The job of this page is to make that judgment easy.
Simple pricing.
Start with the basics for free. Upgrade when you want the full set of tones and a higher rewrite allowance.
Basic
Free
A simple starting point for everyday cleanups and quick rewrites.
- Grammar Fix
- Core rewrite access
- macOS menu bar app
Pro
$5/mo
Unlock the full SideB workflow when rewriting becomes part of your daily writing.
- All 6 tones
- Higher rewrite limits
- Multi-language support
Secure checkout will appear here when Lemon Squeezy is connected.