Shortlist by what you need
Start here if you know why you are leaving Atua.
Want the closest match?
PaletteBrainMost similar to Atua in what it does, its category and its price.
Visit (opens PaletteBrain in a new tab)Need a free plan?
AlterHas a free plan, rated 4.0 out of 5. Atua has none.
Visit (opens Alter in a new tab)Want to pay less than Atua?
ChatKitFrom $5/mo, against from $29/mo for Atua.
Visit (opens ChatKit in a new tab)Want the best rated?
PDF PalsRated 4.0 out of 5 in our review, against 4.1 for Atua.
Visit (opens PDF Pals in a new tab)
At a glance
Green means better than Atua, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 AtuaBaseline | 4.1 | $29/mo | No | Mac app that puts AI commands behind a hotkey in any app: select text, capture a screenshot or speak, then run a custom command on the model of your choice using your own API key, with MCP server support and system tools. | |
| PaletteBrain | 3.4−0.7 | $29/moSame price | No | 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. | vs Atua |
 IntelliBar | 3.8−0.3 | Not listed | No | Native Mac menu-bar AI client that talks to OpenAI, Anthropic, Google and local models with your own keys, sold as a one-time license. | vs Atua |
| PDF Pals | 4.0−0.1 | $29/moSame price | No | Native Mac app for chatting with PDFs locally using your own OpenAI or Azure API key. | vs Atua |
 Lunabot | 3.5−0.6 | Free | YesAtua has none | One AI assistant, five models (GPT-4o, Gemini, Claude, Mistral, Ollama), working identically across browser, mobile, desktop, Telegram and even Siri - no separate API key or ChatGPT account needed. | vs Atua |
| ChatKit | 3.4−0.7 | $5/mo$24 less | No | A refined ChatGPT interface across OpenAI, Gemini, Azure and custom models - bring your own API key or buy credits at a flat 1:1 rate, with URL context, full chat-history search and Whisper voice input. | vs Atua |
 Caret | 3.5−0.6 | Free | YesAtua has none | A macOS background app that reads on-screen context and finishes sentences in any application when a user presses Tab. | vs Atua |
| Alter | 4.0−0.1 | $20/mo$9 less | YesAtua has none | Mac assistant that executes actions across native apps instead of answering in a chat window | vs Atua |
 NotePlan | 3.8−0.3 | $8.33/mo$20.67 less | No | Notes, tasks and calendar app for Mac, iPhone and iPad built around daily notes and Markdown files, with Memo AI turning voice notes into structured insights. | vs Atua |
The alternatives in detail
In order of how closely each one matches Atua.
PaletteBrain
3.4$29/mo
vs AtuaSame price−0.7
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.
- 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
Genuine lifetime pricing instead of an ongoing subscription
Mac-only - no Windows or Linux version
IntelliBar
3.8Not listed
vs Atua−0.3
Native Mac menu-bar AI client that talks to OpenAI, Anthropic, Google and local models with your own keys, sold as a one-time license.
- One menu-bar interface for OpenAI, Anthropic, Google, Grok, DeepSeek, Perplexity and other models
- Local models through Ollama
- Compare the same prompt across several models
No app subscription, and you pay only for the model usage you choose
Needs your own provider keys or accounts, so running costs vary
PDF Pals
4.0$29/mo
vs AtuaSame price−0.1
Native Mac app for chatting with PDFs locally using your own OpenAI or Azure API key.
- Local document storage with no file upload to vendor servers
- Bring-your-own API key support for OpenAI, Azure, and OpenRouter
- OCR engine for scanned PDFs and complex forms
Local-first design addresses real privacy concerns around uploading sensitive PDFs
Mac-only, with no Windows or web version for cross-platform teams
Lunabot
3.5Free
vs Atua−0.6Free plan
One AI assistant, five models (GPT-4o, Gemini, Claude, Mistral, Ollama), working identically across browser, mobile, desktop, Telegram and even Siri - no separate API key or ChatGPT account needed.
- Multi-model support (GPT-4o, Gemini, Claude, Mistral, Ollama)
- Genuine cross-platform sync (browser, mobile, desktop, Telegram, Siri)
- Chat with Memory across sessions
Unusually wide platform coverage (including Telegram and Siri) under one subscription
Top-tier features (Gemini Pro, image generation) require the $19.99/month Super plan
ChatKit
3.4$5/mo
vs Atua$24 less−0.7
A refined ChatGPT interface across OpenAI, Gemini, Azure and custom models - bring your own API key or buy credits at a flat 1:1 rate, with URL context, full chat-history search and Whisper voice input.
- Multi-model support (OpenAI, Gemini, Azure, custom models)
- Bring-your-own-API-key or purchase flat-rate credits
- URL-as-context and full-text chat history search
Flat 1:1 credit pricing avoids the markup many AI chat wrappers add
Requires either an existing API key or purchasing credits - no fully free tier
Caret
3.5Free
vs Atua−0.6Free plan
A macOS background app that reads on-screen context and finishes sentences in any application when a user presses Tab.
- System-wide Tab-to-complete across 70+ macOS applications
- On-screen context reading to match a user's in-progress writing
- Local, on-device memory rather than cloud-stored history
Works across the whole OS instead of being locked to one app's built-in AI
Requires macOS 26+, cutting out users on older systems and all non-Mac platforms
Alter
4.0$20/mo
vs Atua$9 less−0.1Free plan
Mac assistant that executes actions across native apps instead of answering in a chat window.
- System-wide macOS assistant triggered by shortcut or voice
- Executes actions inside native apps rather than returning chat text
- Reads on-screen context to skip copy-and-paste steps
Removes the copy-paste loop between a chat window and real work
macOS only, with no Windows or Linux build
NotePlan
3.8$8.33/mo
vs Atua$20.67 less−0.3
Notes, tasks and calendar app for Mac, iPhone and iPad built around daily notes and Markdown files, with Memo AI turning voice notes into structured insights.
- Memo AI for turning voice notes into structured insights
- Daily notes with an integrated calendar and reminders
- Project notes with backlinks and time-blocking
Notes stay as portable plain Markdown files
Only one AI feature, with little detail published
FAQ
Questions people ask
Is Atua free?
Atua does not list a free plan. Paid plans start from $29/mo.
What is the best free alternative to Atua?
Alter is the highest-rated alternative here with a free plan (4.0 out of 5). Other free options: Lunabot, Caret.
What is the cheapest alternative to Atua?
Among paid plans, ChatKit has the lowest starting price (from $5/mo). If you need it free, start with Alter.
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.