Writing and content decision
RewriteBar
A competent developer can recreate a usable macOS text-rewrite tool and local/cloud model integrations in about a week, but matching RewriteBar’s bundled cloud gateway, multi-model catalog, polished distribution, and ecosystem integrations would be harder to fully replicate.
Visit website↗$3.33/mo
$40/yr
Read off the official pricing page.
$100one-off40 h to build
$0/mo3 h/mo upkeep
On cash alone, building overtakes the subscription at 3 seats.
Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need - the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship. All RewriteBar alternatives, with the arithmetic →
What a replacement has to do
- Capture selected text in macOS, send to chosen model (local or cloud), present rewritten result and optional diff, and paste replacement back into the active app.
What it still won’t have
- RewriteBar Gateway cloud credits, pre-bundled premium models and included cloud credits
- Polished macOS packaging, installer, and App Store/distribution flows
- PopClip extension and prebuilt prompt library
- Priority support and refund/renewal workflows
What remains hard
- Product polish and ongoing maintenance
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 3 seats.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a native macOS app in Swift (SwiftUI + Combine) that provides a keyboard shortcut to rewrite selected text: include Accessibility/clipboard capture, a command palette UI with actions/presets, side-by-side diff view, and paste-back behavior. Integrate provider adapters for OpenAI (REST), Anthropic (REST), and Ollama (local) with configurable API keys and a 'local-first' option. Implement a simple workflow engine to chain actions, a prompt/template editor, and PopClip-compatible extension. Out of scope: mobile/Windows versions, hosted gateway service. Include error handling for network failures, rate limits, and inaccessible selections; provide automated tests for provider adapters and UI-critical flows; supply a signed installer and README with setup instructions.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 5 cited sources+3
- Price verified on pricing page+3
- 3/3 assessment runs agreed+4
- Evidence score67
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.
How scoring works →Cited sources · 5
Every page the run actually retrieved.
- official productRewriteBar: macOS AI Writing Assistant for Grammar, Translation & Productivity
- official pricingRewriteBar Pricing: Plans, Credits & API Key Options
- official docsRewriteBar Documentation | AI Writing for macOS
- open sourceAutomattic/harper
- open sourcelanguagetool-org/languagetool
Integrity checks
What held up, and what did not.
