Effie vs Goodnotes

QuillBot is an AI writing suite best known for its paraphrasing tool. Users paste or type text and have it rewritten in different tones and styles, while companion tools handle grammar checking, summarizing, citations, plagiarism checks and AI content detection. It is widely used by students, writers and professionals.

專項更強擅長從學習筆記自動產生字卡與練習測驗，但缺乏手繪畫圖功能。

專項更強將課程教材轉化為互動式 AI 學習工具，但較少專注於手寫數位筆記本。

專項更強Stronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.

Jenni is an AI research and academic writing workspace that helps students, researchers, and academics read, write, and cite in one place. Bring in PDFs or import a Zotero or Mendeley library, and Jenni's autocomplete suggests sentences grounded in your own sources, with every suggestion linked to the exact page and paragraph. A built-in writer, AI chat, citation engine covering 10,000+ styles, and a Reviews tool for catching weak or unverified claims make it a full environment for producing cited papers.

專項更強Converts notes and PDFs into quizzes and flashcards, but lacks stylus-based handwriting and sketching tools.

提供精美且結構化的區塊文件編輯功能，但專為鍵盤打字設計，而非手寫筆記。

支援七種改寫模式的免費 AI 改寫工具

Wordtune is an AI writing assistant from AI21 Labs that rewrites and tightens your sentences in one click, checks grammar, sums up documents and translates other languages into natural English.

自帶真實文獻與自動引文的 AI 學術寫作工具

將筆記整理成互相連結的類型化物件，而非傳統筆記本，但缺乏手寫筆觸支援。

專項更強Uses an infinite visual canvas for note organization, but lacks Goodnotes' paper templates and PDF annotation polish.