Kerlig Alternative for Mac - Echoo (Free BYOK)
Every Kerlig license is a paid one. Echoo runs free forever in BYOK mode - bring your own API key or a local model - and transforms the text you select in place, in any Mac app. Prefer no setup? 10 credits free, no card.
Echoo is a Kerlig alternative for Mac built around inline shortcuts instead of a chat workspace. Both run system-wide from a global hotkey and both support local models, but Kerlig is a one-time purchase from $49 organised around chat, attachments, and deep research with citations, while Echoo is free in BYOK mode and rewrites, proofreads, or translates your selection in place. Echoo also ships its own local speech-to-text in 25 languages, where Kerlig defers to the native macOS Dictation feature.
Want a detailed feature comparison? See Echoo vs Kerlig Comparison
About Kerlig
Kerlig is a native macOS AI writing app that opens on a global hotkey and gives you a chat-style workspace over 350+ models from OpenAI, Anthropic, Google, Groq, OpenRouter, and others, plus local options like Apple Foundation Models, Ollama, and LM Studio. It is strong on research: attachments for documents, webpages, ebooks, and images, deep research with reasoning models, citations with source links, and MCP connections to tools such as Notion, Linear, GitHub, and Slack. It is sold as a one-time purchase - $49 Basic for one Mac, $79 Pro for two, $297 for a 10-seat team - each including one year of updates.
Limitations
Feature Comparison
| Feature | Echoo | Kerlig |
|---|---|---|
| Price | 10 free credits; Pro $6.99/month; BYOK mode free forever | $49 Basic, $79 Pro, $297 Team - one-time |
| Free option | Yes - BYOK mode with your own key or a local model | No free tier; 14-day money-back guarantee |
| Workflow | Inline - your selection is replaced in place | Chat and document workspace on a global hotkey |
| Voice dictation | Built-in local speech-to-text, 25 languages | Uses the native macOS Dictation feature |
| Deep research | Screen-aware commands and custom prompts | Deep research with reasoning models and cited sources |
| Tool integrations | Command marketplace, Finder actions, screen context | MCP servers for Notion, Linear, GitHub, Slack, Figma and more |
| Local models | Ollama, LocalAI, LiteLLM | Apple Foundation Models, Ollama, LM Studio |
| Source code | Public on GitHub | No |
Competitor pricing and features are based on publicly available information as of June 2026 and may have changed. Verify details on the vendor's site.
Why Switch to Echoo
Frequently Asked Questions
It depends which half of Kerlig you actually use. If you rely on deep research, citations, and document chat, no shortcut tool replaces that cleanly. If you mostly fire the same few writing actions all day, Echoo covers that inline from a keyboard shortcut and runs free in BYOK mode with your own API key or a local model.
Yes. Echoo runs free forever in BYOK mode - bring your own key from Google Gemini (which has a free tier), OpenAI, or Anthropic, or point it at a local model via Ollama and pay nothing at all. Kerlig has no free tier; the cheapest license is $49 one-time. If you would rather skip setup, Echoo also gives you 10 managed credits free with no card.
They price differently. Kerlig is one payment from $49 with a year of updates included. Echoo is free in BYOK mode, or $6.99/month for Pro if you want managed credits and no key setup. If you already have a provider API key, BYOK Echoo costs nothing beyond your own usage. If you prefer a single payment and no key management, Kerlig's model may suit you better.
No, and it is worth being direct about that. Deep research with cited sources, attachment chat over ebooks and images, and MCP tool connections are Kerlig strengths. Echoo is built for execution: select text, press a shortcut, get the transformed result in place. Some people run both.
Not its own engine. Kerlig documents using the native macOS Dictation feature to speak prompts, configured in System Settings. Echoo ships built-in local speech-to-text supporting 25 languages, plus a Voice Launcher that triggers saved commands by name.
Yes. Both are bring-your-own-key apps, so the same OpenAI, Anthropic, or Google key works in Echoo with no extra cost. That makes trying Echoo alongside Kerlig essentially free.
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