⭐ App Store · 1 reviewer (Baby20212021, US, 5★, 2021-01-30)

Every passage decomposes
into vocab · grammar · examples.

For language learners, almost everything you encounter in a foreign-language passage is one of three things: a word you don't know, a grammar pattern you don't know, or an example you want to remember. This workflow makes that decomposition the structural axis of your notes — every node lives in one of three boxes. Framework comes from a documented Chinese-internal case (French literature student, Chinese forum); App Store reviewer Baby20212021 corroborates the broader pattern of using MarginNote as the primary reading tool for cross-language study.

Subject / stageLanguage · cross-language reading
Three boxesVocab · Grammar · Examples
OutputMind map per text + SRS deck
Best forIntermediate → advanced (B1+)

Who's this for / who's it not / what does it solve

Right fit

Intermediate-to-advanced learners reading authentic foreign-language texts (novels, essays, news, academic articles). Already past Duolingo / textbook drills. Want to break out of the "look up word, forget word" cycle.

⚠️

Wrong fit

Absolute beginners who don't yet know enough grammar to recognize patterns. Or pure conversation learners who don't read. Or learners using only short-form content (apps, songs) — the three-box decomposition needs paragraph-length material to be worth the structural overhead.

💡

What it solves

"I read 20 pages of a novel and remember nothing." Three-box turns reading into structured note-taking: every passage produces a few vocab nodes, occasionally a grammar pattern node, and the example sentences that anchor both back into context.

From passive reading to structured passage, in 5 steps.

Click any step pill or use ← → arrow keys.

Step 1 of 5

Start on the language you're actively reading.

Pick the foreign-language text you opened most recently — a chapter, an essay, a news article. Check off each step — progress saves locally.

Progress
0/7
Not started · saved locally
↺ Reset progress
01
Create one notebook per language (e.g., "French reading", "Spanish reading")
Why: Cross-text vocab and grammar patterns repeat. Keeping all texts of one language in one notebook lets the same grammar node accumulate examples from 5 different books.
02
Build the 3-box mind map skeleton: 📕 Vocab · 🔧 Grammar · 💬 Examples
Why: Empty boxes first. Whatever you encounter while reading slots into one of three places — never a fourth.
03
Import or open your active text (PDF / EPUB / web clip)
Why: Three-box only works on real text — the volume and variation of authentic material is what makes the framework worth the overhead.
04
Read the first paragraph. Excerpt unknown words → Vocab box; new grammar pattern → Grammar box; the actual sentence containing them → Examples box
Why: The same sentence often goes to all three boxes. That's the point — the sentence is the link that re-grounds vocab and grammar in real context.
05
Set up 4-color highlighting (e.g., red = vocab · blue = grammar · yellow = idiom · green = phrase to memorize verbatim)
Why: Color → box mapping makes excerpting nearly automatic. Highlight in red, drag to vocab box. No menus.
06
Read 5 more paragraphs the same way. Stop and look at your mind map
Why: At paragraph 6 you should already see structure forming — repeating words moving up the frequency rank, recurring grammar patterns getting their second/third example. This is the moment the workflow earns its overhead.
07
Convert vocab + grammar nodes into review cards. Skip example nodes — they're context, not drill targets
Why: Examples carry context but don't deserve SRS. They live as anchors inside the map; vocab and grammar carry the review load.

Verbatim from a US 5★ review
by a Chinese liberal-arts student.

This single review is the only English-language App Store evidence we have where a language learner explicitly describes using MarginNote as their primary cross-language reading tool. The three-box decomposition itself comes from a separate Chinese-forum case (a French-literature student); we're being explicit about that below.

⭐ ★★★★★ · United States · MN3 · 2021-01-30

"I am a Chinese Leberal arts student learning in America. … I really really love this app! It has helped me a lot in study, but it's also been my best assistance to read my favourite books and articals — I dare say it has reformed my whole life style."

Baby20212021title: "this is a really really useful app"280893313767Lonx6t6aOfxDroIpP5I03ZQ
What we're not claiming. Baby20212021's review describes MarginNote as a primary tool for cross-language reading; it does not describe the specific three-box framework. That framework is documented in a separate Chinese-internal case study of a French-literature student (Chinese forum). We're keeping the framework because it's a clean, transferable structure — but the only thing this single English review verifies is that English-speaking language learners are in fact using MarginNote as their primary text-handling tool. If you'd want stronger English-language evidence specifically for the three-box pattern, we don't yet have it; treat the framework as "borrow and try," not "1,482 reviewers told us so."
Why decomposing into vocab / grammar / examples actually works

The three-box pattern combines three classical findings:

1. Words you meet in context, with their grammatical role visible, tend to stick better than words in isolated lists. The "examples box" is the anchor — every vocab node points back to the sentence it came from.

2. Three boxes beats one big list. A passage of foreign-language text is overwhelming because everything is unknown at once. Three buckets is small enough that you never agonize over "what category is this?", large enough to absorb everything you'll meet.

3. The example sentence carries the original context. When you review the vocab card later, the linked example pulls back the actual surrounding meaning — not a dictionary definition, but the actual scene where you first saw the word.

Our claim is bounded: this framework is a clean cognitive scaffold. The specific case study where it played out for years is on the Chinese internal site; we haven't built up sufficient English-language evidence to call it the "language workflow." Borrow and try.

Foreign-language reading
becomes three boxes.

Free 14-day trial. macOS / iPadOS / iOS. Run the 7-step skeleton on the language text you opened most recently. Borrow the framework — see how it fits.