Important writing often sounds flat or robotic after generic AI edits.
Local-first macOS writing refinement
HUMR helps your writingsound natural and publishable.
A premium refinement layer for professionals, founders, engineers, technical writers, and thoughtful non-native English writers. Not a chatbot. Not a word processor.


What HUMR is
A refinement workspace built for real professional writing.
HUMR is a local-first refinement workspace for public-facing writing. It helps you improve tone, clarity, and readability while keeping authorship and review in your hands. It is not an AI chat assistant, not an AI detector bypass tool, and not a full Microsoft Word or Pages replacement.
Why it exists
Professional writers need refinement, not noisy AI workflows.
Most tools force chat workflows when all you need is precise refinement.
Writers lose trust when changes are opaque or hard to verify.
Privacy-minded teams need provider control without subscriptions or lock-in.
Core features
Designed for trust, review, and control.
Humanise selected text
Refine only what you highlight so your own voice and intent stay in control.
Review before applying
Inspect changes first, then accept or reject with a deliberate, editor-style workflow.
Diff-first trust
Every refinement is transparent. Nothing is silently rewritten in the background.
Local-first workspace
Drafts, preferences, and optional history stay on your Mac by default.
Bring your own provider
Use your own OpenAI or Anthropic key. HUMR does not proxy provider calls.
Export-ready flow
Move finished writing into your publishing workflow with RTF, PDF, or Markdown export.
How it works
A concise workflow that keeps you in charge.
Step 1
Write
Start from your own draft in a focused macOS workspace.
Step 2
Refine
Select text and run Humanise or Proofread with tone controls.
Step 3
Compare
Review changes in diff view before committing anything.
Step 4
Apply and export
Apply accepted edits and export to the format you need.
Trust and privacy
Privacy-first by architecture, not marketing copy.
- No analytics, tracking SDKs, or hidden telemetry.
- No HUMR account required for core writing workflows.
- Provider requests go directly from your Mac using your own key.
- API keys are stored in macOS Keychain.
macOS-native and local-first
Built as a focused refinement layer, not a chat UI.
- Selection-based refinement supports precise editing.
- Diff review keeps every change visible before apply.
- Document workspace supports practical editing and export.
- One-time purchase direction with no subscription lock-in.
Get started
Ship writing you can stand behind.
HUMR is built for the final mile of professional writing: refining your own draft until it sounds natural, authored, and ready to publish.