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▸ Structure-first language learning

See how Spanish
thinks before you
reach for the words.

Most apps help you recognize words. Estructura shows the structural shift Spanish makes before you ever speak it — the middle layer where English word order is rearranged into Spanish word order, so you see exactly how each idea is reshaped.

You already learned one language. The next one should build on that, not start from zero.

No sign-up. Try any scene instantly.
Research-backed across noticing, task-based learning, pragmatics, and multilingual transfer
Built for serious learners, not streak chasers
🧔
Carlos · Bar in México City
LIVE DEMO
structural rules reviewed nuance claims PIE roots traced cultural insights

Language is not vocabulary.
It is thought structure.

Most apps drill the third column. Estructura teaches the second — the hidden middle step where English re-arranges itself into Spanish logic.

The thought
I like it.
The structure
To-me it-pleases.
The Spanish
Me gusta.

Once you can think the middle column, the Spanish is almost free.


Your thoughts, restructured.

Type any English sentence. The engine rebuilds it in Spanish logic — live, right here.

Powered by the same engine as the app · takes a few seconds

What the engine actually does

Four moves, stacked — each one missing from every other language app.

01

The magic move

Watch English words physically slide, merge, and re-shape into Spanish order — every move badged with the rule that fired. The shape of the change, not just the result.

English
good night
Restruct.
good-PL nights
Español
¡Buenas f · pl noches!
02

Click any word. Get the whole why.

One tap opens the stack: etymology back to Latin and PIE, the morphology of the ending, the cultural nuance, the register — and the voice that says it aloud.

estar
📜 Root trail
estar Latin stare 'to stand'
PIE *steh₂-. Cognates: stay, stance, station, stable.
03

Real Spanish, with receipts

Warmth, register, and what people actually say — every nuance claim reviewed and cited to a real source, not generated on the fly.

¡Buenasnoches!
💡 Nuance, not just translation
Good evening ¡Buenas noches!
Spanish lands warmer and more plural here. The learner is not just memorizing a phrase, but seeing the social tone it carries.
150 reviewed claims · 295 sources
04

It remembers what you've learned

Patterns you've seen accumulate into a ledger; spaced review resurfaces them right before you'd forget; explanations you've mastered politely get out of the way.

tener states
am hungry → have hunger
obj before verb
serve you → to-you serve
pro-drop
I can → can-I

Why you can trust the arrows

Wrong arrows are worse than no arrows.

That's the engine's founding rule. When alignment between layers can't be verified, Estructura shows less instead of guessing.

Cited, not vibes
Every nuance claim links to its source — 295 of them, from RAE to peer-reviewed SLA research.
AI, checked
Generated drills pass a multi-stage validator before you see them; anything that fails gets honestly labeled instead of silently shipped.
Deterministic where it matters
Conjugation and gender morphology come from rule tables, not model guesses.

One engine, many languages.

The structural-shift approach scales wherever the gap from English is widest.

Español — the flagship
33 structural patterns · 9 scenes · the full depth of the engine.
हिंदी — your bridge
Already speak Hindi? Estructura renders the Hindi parallel beside the Spanish — mujhe bhookh hai and tengo hambre make the same move. Prior languages become scaffolding.
中文 — the widest gap
Pinyin-first with tone contours animated to the audio, and characters split open: 欢 (joy) + 迎 (greet) = welcome.

Order a mezcal in Oaxaca. Right now.

Every scene is a real communicative job with a character who stays in role — and when you go off-script, the AI keeps teaching.

Ready to restructure?

No sign-up. No streaks. Start with your own sentence.

Start with the bar scene →
33 Spanish patterns · 12 Hindi patterns · 9 demo scenes · Built for L3 (English+Hindi → Spanish) speakers
© 2026 Estructura · an independent project — no sign-up, no ads · anonymous conversation logs only, used to improve the engine