Writerbox
Write it yourself. Get better help.
A local-first writing workspace where AI helps you clarify, critique, and revise without taking over your work.
Use on up to 3 devices
30 days free evaluation
Writerbox is paid software with a fully functional 30-day evaluation.
What Writerbox does today.
A short list on purpose. Planned work stays off the feature list until it is real.
A focused writing canvas
Write in a clean document workspace designed to keep the words in front of you.
Formatting without clutter
Use the essential document formatting controls without turning the app into a dashboard.
Use your ChatGPT access
Connect through ChatGPT or Codex without creating and managing a separate API key.
Local files you control
Open, edit, and save writing on your Mac without sending documents to Buyonce.ai.
Better help, without giving away the writing.
Most AI writing tools start by offering to produce more words. Writerbox starts with a different question: what would help you see your own draft more clearly?
It can surface gaps, question weak claims, and propose revisions. You inspect the result and choose every change. The author remains visible in the process.
What your purchase means.
Plain terms, without a separate visual sales pitch.
- Individual ownership
- One purchase belongs to one individual and can be used on their personal devices, including for professional writing.
- Included updates
- The purchase includes compatible Writerbox 1.x updates. Future major versions are optional purchases.
- Honorware, not a lock
- Writerbox keeps working if you do not buy it. Purchasing removes the occasional reminder; it never unlocks your writing or holds your files.
- Your AI relationship
- AI features require eligible ChatGPT or Codex access. OpenAI controls plan eligibility, limits, availability, and any related charges.
- System
- macOS 12 or later.
- Writing
- Available locally and offline, with or without a purchase.
Questions, answered plainly.
How does the evaluation work?
Writerbox is paid software with a fully functional 30-day evaluation. The app shows the days remaining and may present one purchase reminder every 24 hours. After 30 days it remains fully functional, but continued use is unregistered until you buy it once.
Is Writerbox a subscription?
No. Writerbox 1 is a one-time purchase. You can keep using the version you bought without an ongoing buyonce.ai subscription.
Does Writerbox write for me?
That is not the goal. Writerbox is designed to question, critique, and suggest while leaving the words and final decisions with you.
What happens when Writerbox 2 arrives?
Your Writerbox 1 purchase keeps working and includes compatible 1.x updates. A future major version would be an optional purchase, never a forced upgrade.
Can I use Writerbox offline?
Yes. Writing remains local and available offline whether or not you have purchased. AI features naturally require a connection to the AI provider.
What AI account do I need?
The launch integration is designed for eligible ChatGPT or Codex access. OpenAI controls plan eligibility, availability, and usage limits.
Writerbox is nine dollars, once.
The complete app from the first launch. Your files and the app never lock.
Use on up to 3 devices
30 days free evaluation