Finds your weak spots
A 4-minute gap test gives an honest level estimate and your three weakest areas — refined as you study, from your own behaviour, on your device.
A private English repair lab · A1–C2
Find out where you're really stuck.
You know English — but you freeze mid-sentence and can't tell what's holding you back. Lisantera finds your weak spots and turns them into focused daily practice. Calm, private, offline.
4-minute diagnostic · no account · the whole app in one offline file
Lisantera does not punish you. It refuses to lie to you.
The lab
Built for retrieval, not streak-chasing
Every mechanic exists to fix an error — nothing exists to keep you scrolling.
91 grammar topics, all 91 fully taught
Every one comes with practice and instant feedback while it still matters — no mystery score at the end — and every one now carries the full guided lesson: the rule, worked examples, the trap a Turkish speaker walks into, and a self-check. Until 2026-08-20 nine of them were practice-only and this page said so; the C2 block was the last to be written.
It corrects what you write — and says what it skipped
A local checker built from each course's own grammar tables, not a language model. It flagged nothing across 8,294 held-out sentences it had compiled no rule from, so when it speaks you can trust it. It covers noun gender, article case, verb agreement and a/an — and after every check it tells you which rules it did not look at, because silence from a checker is not the same as correct.
247 readings + 192 listenings, A1→C2
Level-labelled texts at the length their level actually asks for — a short note at A1, a sustained essay at C2 — with slow replay and shadowing, and the coach picks the one that stretches you. All 439 pieces have studio audio.
Type answers, don't peek
Review means writing the answer. Correct moves a pattern forward in spaced repetition; a miss brings it back tomorrow.
Sticky words get a new strategy
Words that keep slipping are detected and re-taught with fresh context and a targeted writing task — not another flashcard.
Discipline, not streaks
Opt into a weekly contract you set and control. Miss your cadence and it cools off into a short re-entry challenge — never a guilt streak, never a ban.
Inside the lab
A calm place to study
The refusals
Why Lisantera refuses gamification
- No streaks. Discipline is a contract you write yourself — with strikes, a cooling-off, and a way back. A streak measures attendance, not learning.
- Correction, not addiction. Every mechanic exists to fix an error, not to make you open the app one more time.
- We'd rather say "not enough evidence" than lie. Progress numbers appear only when real behaviour backs them; an empty metric stays honestly empty.
- Absence is not failure. An emergency pauses the contract — it never fails it. Nothing is banned, deleted, or reset behind your back.
- Your learning data is not our product. There is nothing to sell and nobody to sell it to — your progress lives in your browser and exports on demand.
- No fake AI. Every recommendation is deterministic, explainable, and made on your device — each one can say because.
Lisantera does not punish you. It refuses to lie to you.
Private by architecture
Privacy is the default, not a setting
- No account required — the app is a single offline file. The optional account (announcements only) never sees your learning data.
- No analytics, no cookies, no tracking. The only network request while you study is the one that fetches a recording when you press play.
- Progress is stored only in your browser (
localStorage) and can be reset any time. - All lesson content is original and curated for the app.
Start with three small steps
Learn one pattern. Hear it in context. Make it stick. The app walks you through your first session.
Open the English labAlso finished, and each its own offline file — 87 topics taught, A1–C1, with audio:
These three were reviewed by AI editors, not by a human native speaker. That is recorded in each course file, it is stated wherever they are offered, and it is why they stay free until a native reviewer has read them.
Built for serious language learners.