v0.16.0

Grammar that tracks your progress, a premium area that explains itself, and custom specials on request

• A free grammar check-up. Take a short, fixed set of items (two per rule) for any language and level where rule tracking is covered, from the new check-up screen. It grades instantly, updates your placement level when your answers cross a threshold, and can be retaken any time - a retake serves the same set, so nothing about it changes underneath you. This core check-up costs nothing. From the same screen you can also start a richer AI-generated check-up covering the whole level at once, for credits.
• A grammar profile for each language you're learning. A new page shows every rule you've practised, grouped into weak, developing and strong, with your placement level, attempts and when you last practised each one. Tap any rule to jump straight to its cheat sheet. When rules come back weak, a button builds a follow-up course targeting exactly those.
• A weekly practice goal, not a streak. Set how many items you want to practise a week from your grammar profile. A calm bar chart shows the last several weeks and how many hit the goal - no red marks, no broken streak, no daily requirement. It sits alongside the existing daily quests without replacing them.
• Write a story to practise specific grammar. Turn on "Write this story for language practice" in the story wizard's Advanced section (or start one straight from your grammar profile's trouble words), pick a CEFR level, up to four grammar points and up to twelve of your own trouble words, and every chapter is generated to use them - then checked afterwards, with one automatic rewrite if the check fails. Available where a language and level has rule tracking. Targeted chapters cost 1.25x the normal chapter price, shown before you generate, and the story stays private.
• A next-course suggestion built from your own weak rules. When at least three rules you're struggling with have cheat-sheet coverage and you haven't started a grammar course on that language and level in the last two weeks, the Learning area offers one. Accepting it fills the wizard in for you - language, level and the exact rules to target - and blocks the new rules first before mixing in the ones you keep confusing with each other. It costs the ordinary price for that course; the suggestion is a shortcut, never a surcharge.
• The AI tutor now cites the actual rule. When a course review covers a rule you missed, the tutor's explanation is grounded in that rule's real cheat-sheet text instead of whatever it remembers, and it leads with a guiding question before giving the correction. Available for rules with cheat-sheet coverage; other feedback is unchanged.
• Forgetting a well-known word no longer resets it to zero. A saved word you've learned well that slips now goes through a short two-step relearning review (about ten minutes, then a day) instead of losing all its progress. Words you keep forgetting get flagged and appear as "trouble words" on your grammar profile, ready to feed into a targeted story. Review load is capped and interval timing gets a small random variation, so daily review piles don't spike and the whole queue doesn't come due on the same day.
• An optional weekly progress email, and reminders that stay in the app. Turn the digest on from your grammar profile and you get one mail a week with your real state: what's due for review, how your weekly goal is going, which rules moved. It fades out on its own after three quiet weeks rather than nagging, never repeats the same template within four weeks, and every mail carries a one-click unsubscribe that needs no login. You can turn it on for any language you're learning; where a language has no cheat sheet yet, the digest says so and leaves the rule sections out. In-app reminders for due reviews and goal status are separate and can be switched off on their own.
• Two new grammar exercises: pick the case, and transform the sentence. German-style case marking and sentence transformation now have their own practice modules inside a grammar course, built on the same annotated sentences the cheat sheets use, so the highlighting and the explanations match what you already read there. Both are derived from a course's existing annotation - they add nothing to what a course costs.
• Cheat-sheet sentence breakdowns fixed: arrows draw, clauses group, chips don't overlap. Reference arrows between related words render properly again instead of silently vanishing, and are easier to see at rest. Overlapping role labels (the "PRED VERB" collision over one small word) now collapse to one label. On sentences with an embedded clause - a German dass-clause, a Turkish participle clause and similar constructions - the roles inside it are now visually grouped and distinguished from the main clause instead of reading as one flat sentence. Every arrow across all four catalogue languages now points the same way, from the predicate to the word it governs, so the arrowhead and the label always agree.
• Request a quote for a custom special. From the specials area, order a comic, choice-images pack or other special for one of your own stories: pick the kind, add an optional dedication and a gift recipient, and see a rough estimate before you send it. Making it visible to other premium users in the app knocks 25% off. Submitting emails the request to us for an exact quote - nothing is ordered or charged in the app.
• Convert between text and image credits. Premium accounts can now trade between their two credit pools from User Settings > Account: text credits into image credits, or the other way around, in whole image-credit units. The exchange runs at different rates in each direction (5 text credits in for 1 image credit, or 1 image credit back for 2.5 text credits) - a round trip costs half. Free and purchased credits never mix in a conversion: a free credit always converts into a free credit, so a monthly top-up still resets exactly the free balances it always did, and a purchased credit's value can never quietly turn into a free one.
• Updated model lineup. The model picker now offers gemini-3.6-flash and gemini-3.7-flash, two newer Flash options at a lower output price than before. A few older or pricier Gemini models are no longer offered, along with both Imagen image models, which Google has shut down. Stories and courses already using a retired model keep working as they are - nothing changes underneath an existing pick.
• Every word in a cheat-sheet example now carries its word class. Articles, prepositions, adverbs, numerals and the rest used to render bare when they carried no sentence role; now over ten thousand words across all four catalogue languages are labeled. The example view's configuration also splits the captions: show just the sentence function (SUBJ, OBJ), just the word class (NOUN, ADV), or both stacked - each layer toggles on its own.
• The grammar check-up got a real overhaul. All three item kinds now actually serve (gap items render their blank inline in the sentence), and the whole item pool went through a quality pass that retired over a hundred weak items. Review sessions changed too: a wrong answer counts immediately, a missed card comes back next session instead of vanishing, and you can ask for an AI hint on a tricky card - up to ten a day.
• Course builds recover instead of dying. When a generated part of a grammar course comes back slightly malformed, the build now repairs it deterministically, salvages the good sentences from a bad batch, and keeps going instead of failing the whole course. If a build does stop early, the course page says so plainly and offers a rebuild that bills only the missing parts - and that offer no longer quietly expires a day later.
• A Premium page that explains itself, and the science behind the app. The new Premium page lists what premium actually buys, in plain terms, and links a set of pages laying out the learning research the Learning area is built on - spaced repetition, comprehensible input, why tracking is weekly instead of streak-based - each with its sources. The specials area (comics and choice-image packs) is now part of premium: browsing and ordering live behind it, and the Premium page is where a curious visitor lands instead.