Echoo vs Helios
Compare Echoo and Helios for system-wide AI writing on macOS. Free vs freemium subscription.
Echoo is best for
Power users who want unlimited AI text transformation with model choice and privacy control
Helios is best for
Casual users who want zero-setup AI writing without managing API keys
Who Should Choose Which?
Helios and Echoo both offer system-wide AI writing on Mac with text selection and keyboard shortcuts. Helios has a polished interface and uses its own proprietary AI, meaning zero setup - just install and go. However, the free tier limits you to 30 requests per month, and paid plans range from $5.99 to $12.99/month. Echoo starts with 10 free managed credits (Pro is $6.99/month for 300), and the BYOK mode is free with no request limits imposed by Echoo (your provider bills its own usage). The BYOK approach also means you choose your AI model, can use local models for privacy, and your text never routes through a third party. For casual users who want simplicity without setup, Helios is convenient. For anyone doing serious writing work, Echoo is the more powerful and cost-effective choice.
Feature Comparison
| Feature | Echoo | Helios |
|---|---|---|
| Price | 10 free credits; Pro $6.99/month; BYOK mode free | Free (30 requests/month); $5.99-12.99/month |
| AI Provider | Bring your own key - any provider | Helios-provided AI (proprietary) |
| Voice Dictation | Yes, local AI speech-to-text (25 languages) | No |
| Local LLM | Ollama, LocalAI, LiteLLM | No |
| File Processing | Process files from Finder | No file processing |
| Request Limits | Unlimited (your API key) | 30 free requests/month |
| Marketplace | Community command marketplace | No |
| 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 Choose Echoo
Switching to Echoo
Install Echoo and set up an API key from OpenAI, Anthropic, or Google (Gemini has a free tier). Configure the same Option-key shortcuts you used in Helios. You get unlimited requests instead of 30/month.
Frequently Asked Questions
Helios works out of the box without an API key (30 free requests/month). Echoo requires an API key but offers unlimited usage and more features.
Yes, but their shortcuts may conflict. Most users find Echoo covers all their needs with more flexibility.
Explore More
Fix Grammar on Mac with AI Shortcuts
Instantly fix grammar, spelling, and punctuation in any Mac app using Echoo AI shortcuts. No copy-pasting, no tab switching.
Translate Text on Mac Without Leaving Your App
Translate text between any languages instantly on macOS using Echoo AI shortcuts. No browser tabs, no copy-pasting.
Summarize Any Text on Mac Instantly
Summarize long articles, emails, and documents on macOS with a keyboard shortcut. AI-powered text summarization with Echoo.
AI Voice Dictation for Mac
Use AI-powered voice dictation on macOS with Echoo. Local speech-to-text with 25 language support, no cloud required.
OpenAI Integration
Connect Echoo to OpenAI GPT models for powerful AI text transformation on macOS. Use GPT-4, GPT-5, and more with keyboard shortcuts.
Anthropic Integration
Connect Echoo to Anthropic Claude models for thoughtful, nuanced AI text transformation on macOS. Claude Opus, Sonnet, and Haiku.
Try Echoo
Privacy-first. See why users prefer Echoo.