Echoo vs Apple Intelligence Writing Tools

Apple Intelligence Writing Tools has a major advantage that no third-party app can replicate: it is built directly into macOS with seamless system integration. Right-click any selected text, choose Writing Tools, and you get Proofread, Rewrite, and Summarize options without installing anything. For users who want basic writing assistance with zero setup, Apple Intelligence is the simplest possible solution. However, its simplicity is also its limitation. Apple Intelligence offers a fixed set of three writing actions with no customization - you cannot add your own commands, choose different AI models, or extend its capabilities. It only works on M-series Macs running macOS 15.1 or later, excluding all Intel Macs and older Apple Silicon users. And its AI models are Apple's own, which may not match the quality of frontier models like GPT-5.2 or Claude for complex writing tasks. Echoo fills every gap that Apple Intelligence leaves. It supports any AI model you choose, offers unlimited custom commands through a community marketplace, includes voice dictation with AI post-processing, processes files directly from Finder, and works on any Mac running macOS 13 or later - including Intel Macs. For users with M-series Macs, the ideal setup is using both: Apple Intelligence for quick proofreading via right-click, and Echoo for everything else - custom transformations, translation, code review, voice dictation, and advanced AI workflows. For Intel Mac users, Echoo is the only option for AI writing assistance.