Paid

PaletteBrain

Select text in any Mac app, hit Space, run a custom AI command, paste the result back – no window switching, bring your own OpenAI key, pay once for lifetime access.

3.4 Productivity
3.4 Good 3.4

Bottom line: PaletteBrain is a capable productivity tool, best known for works with any macOS app or website via keyboard shortcut. Paid from $29/mo.

Genuine lifetime pricing instead of an ongoing subscription Mac-only – no Windows or Linux version
Reviewed by Challenging Voice Editorial · Updated Aug 2026 How we rate
PricingFrom $29/mo
Free planNo
CompanyPaletteBrain
PlatformsMac
Best forProductivity
Visits5
Last reviewedAug 2026
UpdatedAug 2026
Ask AI about PaletteBrain ChatGPT Claude Perplexity

Overview

PaletteBrain is a native macOS application integrating ChatGPT capabilities across every app and website on a Mac. Select text anywhere, run an AI command via a keyboard shortcut, and paste the response back into the original application without ever switching windows.

Custom AI commands cover grammar fixes, translations, summarization, code refactoring, and more, bound to instant keyboard-shortcut triggers, with all AI conversations stored and organized in one place. Users bring their own OpenAI or Microsoft Azure API keys, paying as they go without needing a separate ChatGPT Plus subscription. The roadmap adds Google, Meta, Mistral, Perplexity, Anthropic, and xAI models via Agent.so integration, plus PDF chat and image vision.

PaletteBrain targets founders, creators, and employees at organizations wanting AI woven directly into their existing workflow, with testimonials from content creators, copywriters, educators, marketers, and developers. Personal: $29 lifetime, 1 device. Family: $99 lifetime, 5 devices. Team: custom pricing, unlimited devices. All include lifetime updates, no recurring fees.

Key features

  • Works with any macOS app or website via keyboard shortcut
  • Custom AI commands – grammar, translation, summarization, code refactoring
  • Bring-your-own OpenAI/Azure API key, pay-as-you-go
  • Organized conversation history across all AI chats
  • Lifetime license, no recurring subscription

Screenshots & demo

PaletteBrain screenshot 1

Pricing

PaletteBrain is a paid tool, with plans that start at $29/mo.

  • Pricing modelPaid
  • Starting priceFrom $29/mo
  • Free planNo
Visit PaletteBrain

Pricing is provided as a guide. Check the official site for the latest plans.

Is PaletteBrain expensive?

PaletteBrain starts at $29, which is 146% above the Productivity median of $11.8 a month across the 156 priced tools we list in that category.

The cheapest paid option in Productivity starts at $0.29 and the most expensive at $165.

71% of Productivity tools in the directory offer a free tier, which this one does not.

Compared against every priced listing in Productivity, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.

Pros & cons

Pros

  • Genuine lifetime pricing instead of an ongoing subscription
  • No window-switching keeps AI assistance inside the actual workflow
  • BYO API key avoids paying for a separate ChatGPT Plus subscription

Cons

  • Mac-only – no Windows or Linux version
  • Requires managing your own API key and its associated costs
  • Broader model support (Google, Anthropic, xAI) is still on the roadmap, not live yet

How it compares

ToolRatingFreeFromBest known for
PaletteBrain (this tool)3.4No$29/moWorks with any macOS app or website via keyboard shortcut
Obsidian4.6Yes$4/moNotes stored as local, plain Markdown text files
Google Translate4.6YesFreeGemini-powered text translation that captures idioms and context, not literal word substitution
Notion AI4.5Yes$10/moAI writing, summarization, and Q&A grounded in existing workspace content

Alternatives to PaletteBrain

4 tools our editors picked as direct alternatives to PaletteBrain.

Our verdict

3.4 / 5 3.4

PaletteBrain is a solid productivity tool, best known for works with any macOS app or website via keyboard shortcut. Paid plans start at $29/mo.

What makes it different: PaletteBrain stands out for works with any macOS app or website via keyboard shortcut.

How we score it
Overall 3.4
Value for money 3.9
Feature depth 4.9
Popularity 3.7
Best for ProfessionalsTeamsFoundersFreelancers

Frequently asked questions

What is PaletteBrain?
PaletteBrain is a productivity tool listed in the Challenging Voice directory. Select text in any Mac app, hit Space, run a custom AI command, paste the result back – no window switching, bring your own OpenAI key, pay once for lifetime access.
Is PaletteBrain free?
PaletteBrain does not offer a free plan; paid pricing starts at $29 per month.
How much does PaletteBrain cost?
PaletteBrain starts at $29 per month. See the pricing plans above for full details.
What are the best PaletteBrain alternatives?
Popular alternatives to PaletteBrain include MeisterTask, Teamwork.com, and Write My PRD. Browse them all in the Productivity category.
Is PaletteBrain any good?
PaletteBrain scores 3.4 out of 5 based on our editorial review.

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