Every level of the language is a lake. Aprandr shows you the whole thing.

It's the metaphor we use to think about every CEFR sublevel. A lake is finite and mappable: it has a fixed set of vocabulary, phrases and rules curated by a human expert. You see it whole before you start — nothing is hidden behind an algorithm. The promise: no more invisible lakes, no more pretending you're moving forward. "Sublevel" is the technical name; "lake" is how we talk about the product.

Because Duolingo decides the route for you — you don't see what lakes exist, which ones you've already touched or which ones it's skipping. You move through a linear corridor without knowing what's around you. Aprandr does the opposite: it hands you the full map from A1 to B1 on day one and you decide which lake to drain today.

ChatGPT generates random ripples — it doesn't know which vocabulary belongs to A1-2 vs A2-1, so it improvises off-curriculum. Here every lesson is built from the curated catalog of the lake you picked. The content stays inside, and your history is saved — it doesn't evaporate when you close the tab.

It doesn't guess. You pick the lake. If you're not sure, start at A1-1 and move up when it feels easy. There's no mandatory placement test — that friction doesn't serve the self-directed adult.

Yes — it's designed for that, without being only for that. Most product decisions answer pains the ADHD brain lives daily: you see the full map of lakes (the dark zone of "I don't know what I'm missing" disappears), you pick the lake — not what to study inside it (less decision fatigue), you generate the lesson when hyperfocus hits and leave it half-done if it crashes (no big deal), and you have five formats to pivot to when one gets boring. No streaks, no XP, no shame. If you're not ADHD it works too — it's just that an ADHD brain feels seen using it.

Because the streak turns into an obligation. When it breaks — and it breaks — the intrinsic motivation you had to learn the language gets replaced by shame, and shame kills the habit. The ADHD brain pays double: a streak broken on Friday switches off Monday. Aprandr doesn't compete with your motivation using an external counter. A bad day breaks nothing; the map is still there when you come back.

Mark it as low quality and generate another. It's on demand, you're not tied to a single version. Your rating stays in your history and the "Quality: high" filter becomes your personal curation over time.

No. Lesson generation depends on cloud AI. Already-generated lessons can be reopened as long as you have a connection.

German, French, Spanish and English — with the full lake map from A1 to B1. We're curating the catalogs for what comes next before we ship them. We don't want to launch empty languages just to inflate the list.

Yes, to start. There will be a paid plan when we stabilize generation limits. What you generate now stays with you.

Yes. Every lesson you generate is tied to your account, with its status (pending / done), quality (low / good / high), and reminder. You can come back to it whenever.

Today we go up to B1 — the B2 and C1 lakes are still being curated. If you're higher than that, it's not for you yet. When we ship those levels you'll see the entire map, same as with A1-B1.