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One-time-purchase macOS utility that runs ChatGPT commands on selected text in any app, using your own API key
PaletteBrain puts ChatGPT one keystroke away in every macOS app: select text anywhere, hit the shortcut, run a saved command such as fix grammar, translate or summarize, and paste the result back in place. Users build their own prompt commands with per-command shortcuts. It is sold by indie developer Abruptive LLC as a lifetime license — $29 for one person, $99 for five devices — rather than a subscription, but it requires your own OpenAI or Azure OpenAI API key, so model usage is billed separately by OpenAI. macOS only.
Lifetime licenses: $29 personal (listed as cut from a former $99/year), $99 family for five devices, custom pricing for teams, all with lifetime updates. The app is bring-your-own-key: OpenAI or Azure OpenAI usage is paid separately, which the vendor estimates at under $1/month for light use.
Use tool ↗A cheap, honest deal: one payment puts GPT into every Mac text field, and because you bring your own key there is no markup on model usage. The catch is scope — it is a thin OpenAI/Azure wrapper from a small indie vendor, with no Windows version and no support for Anthropic, Google or local models mentioned.
Watch out: The sales page leans on urgency (prices said to rise at each roadmap milestone) and the former $99/year framing; judge it as a $29 utility, not by the discount theater.
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