CorrectMyPaper
Freemium
Academic researchers preparing journal submissions
Switching between Mail, Notion, Slack, and your IDE means your writing voice fragments across four different contexts — and no general-purpose AI assistant remembers which app gets formal prose versus terse code comments.
$6/mo or $9/mo · Free tier: 100 completed words a day, suggestions fade out gradually after limit · Checked Nov 5, 2026
Cotypist sits in the macOS menu bar and surfaces word-completion suggestions as you type, accepted with a Tab keystroke, across whichever apps you have open. The differentiating mechanic is per-app instruction profiles: you teach it one voice for client emails, a different register for pull-request descriptions, and it holds those rules separately per application. On-device processing keeps your keystrokes off external servers. The free tier caps daily output at 100 words — a ceiling that arrives fast for anyone with real writing volume. No API, no Windows build, no self-hosting path exists.
Bottom line: Pick Cotypist if you write across several Mac apps daily and want per-app voice rules without your drafts leaving the machine — but if your team runs Windows or you need to script completions into a pipeline, there is no path forward here.
For occasional writing. 100 completed words a day.
For people who write every day. Unlimited completions on one Mac, with full autocorrect and your own writing instructions.
For the power users who already think faster than they type. Unlimited writing on up to three of your own Macs, with the full model lineup and the deepest customization.
View full pricing on cotypist.app →
Pricing may have changed since last verified. Check the official site for current plans.
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Freemium
Academic researchers preparing journal submissions
Free · Open source
Writers editing AI-assisted text
Cotypist operates as a macOS menu-bar assistant that watches your active application and offers inline word completions you accept with Tab. The core workflow is: open any supported Mac app, start typing, and Cotypist proposes the next words based on both the content in front of you and any per-app instruction profile you have configured. There is no copy-paste loop, no sidebar to switch to — the suggestion appears inside the document you are already editing.
The per-app instruction system is the feature that separates it from a generic autocomplete layer. You configure a distinct set of style rules for each application — verbose and formal for one, concise and technical for another — and Cotypist applies the matching profile automatically when focus shifts between apps. Writers managing multiple clients or contexts across a single Mac can maintain distinct voices without manually switching modes.
Cotypist fits a specific profile: a solo writer or small-team contributor who works exclusively on macOS, types enough each day to make Tab-completion meaningful, and treats on-device privacy as a non-negotiable. The 100-words-per-day free tier exposes the tool quickly; anyone with genuine daily writing volume will hit that ceiling before lunch. Teams on Windows, or anyone who needs to integrate completions into an automated workflow via API, will find no supported path — the vendor describes no API surface and no cross-platform roadmap on the product page.
The paid tiers remove the daily word cap and, at the higher tier, add support for managing the tool across multiple Macs — relevant for writers who split time between a desktop and a laptop and want their per-app profiles to follow them.
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