Habitica
A free habit and productivity app that turns real-life tasks into a game.
Free plan availableSignup requiredPartial Chinese supportReviewed
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Productivity
Reviewed free websites for this task. Check free limits, signup gates, and alternatives before you jump out.
Language Reactor
A language-learning toolbox that turns YouTube, Netflix, webpages, and text into study material.
Free plan availableSome features require signupPartial Chinese supportReviewed
PaperMe 纸由我
A Chinese-friendly printable paper generator for grids, dot paper, music sheets, Cornell notes, and more.
FreeNo signupChinese-friendlyReviewed
Tinkercad
Autodesk’s free web app for beginner 3D design, circuits, and coding.
FreeSignup requiredChinese-friendlyReviewed
PDF24 Tools
A free PDF toolbox for merging, compressing, converting, OCR, editing, and more.
FreeNo signupPartial Chinese supportReviewed
Wokwi
An online simulator for Arduino, ESP32, Raspberry Pi Pico, and electronics projects.
Free plan availableSome features require signupNo Chinese supportReviewed
QuillBot
Paraphrasing, grammar, and writing help.
Free plan availableSome features require signupPartial Chinese supportReviewed
Notion
A workspace for notes, docs, and projects.
Free plan availableSignup requiredPartial Chinese supportReviewed