Online courses that check the skill
Not "sort of get it",
but can do it yourself
Courses in Excel, English, SQL, finance and statistics — or from your own notes. You solve tasks yourself, and two weeks after each block you get a new task the course never showed you. Solved it — then you can do it yourself, not just remember the example.
The first block of any course is free. No card, no time limit.
How a topic goes: today — the task "A 300,000 loan over 3 years. Where do you overpay less — annuity or differentiated payments?", tomorrow — the review "Why do early annuity payments go mostly to interest?", two weeks later — the check "Two-week check · early repayment" with a point-by-point result.
- SQL: A query took 2 seconds, now it takes 40. What do you look for in the query plan?
- English: "I've sent the report" or "I sent the report" — your colleague is waiting for it right now
- Statistics: B beats A by 0.2 points on 1,000 people. Ship it?
- Python: Two threads write to the same dict. What can go wrong?
- Finance: A 100,000 debt at 3% a month. How much after a year?
- Excel: Filled a formula down — and it's 0 everywhere. What's wrong with the reference?
- Your notes: A course from your 120-page handbook — with tasks and a check
Try it right now
This is what a lesson looks like. You go first.
Nothing is explained until you've tried. Answer in your own words — then the walkthrough opens, and you'll see for yourself what was missing.
Preparing for an interview or an exam?
Paste a job ad — we'll show what's missing
We break the requirements down into skills and match them with the catalog: which course covers what, and what we don't have — honestly. Each course starts with a short check on its first topics: what you confirm, you go through faster.
No sign-up. You only sign in to save the route.
How it works
The course doesn't end at the last lesson
Most courses measure how much you watched. We measure what you can do two weeks later.
- Today
You solve it yourself
Every topic starts with a task. The explanation comes after your attempt.
- Tomorrow
You come back
A short review the next day, then less and less often, on a schedule.
- End of block
A practice task
Three attempts; before each one you see what's still open.
- +2 weeks
Skill check
Two weeks after the block ends — a new task the course never showed you. The result: what worked and what didn't. Always free.
Comparison
A chatbot will answer any question. But it won't come back two weeks later with a new task.
- Threshold: You — walkthrough after your attemptChatbot: Usually the bot; in study mode — you
- Threshold: Yes, on a scheduleChatbot: No, unless you ask
- Threshold: Yes, always freeChatbot: No
- Threshold: What worked and what didn'tChatbot: An answer to the question
- Threshold: First block freeChatbot: Has a free plan
Pricing
Start free. Pay when you want more.
- Catalog courses
- all
- Review and a check two weeks later
- always
- Progress
- yes
- Dialogue steps
- yes
- Courses from your own material
- no
- Participants by link
- no
- Publishing to the public catalog
- no
Questions
What exactly is free?
The first block of any course — in full and with no time limit: lessons, review and the practice task with all three attempts. It's not a trial that expires. Review and the two-week checks are always free.
How is this better than asking a chatbot?
A chatbot answers a question and never comes back to it. Here you try first, the topic comes back in review, and two weeks later a new task shows whether the skill stayed.
Why can you trust the courses?
AI agents build each course, and every lesson, example and task goes through a separate check. Spot a mistake? "Report a problem" is on every screen: the item is hidden until it's checked. In your own course every claim shows its place in your file.
Why are there no points, streaks or levels?
Because they count the days you show up, not what you remember. We count something else: what you recall a week later and whether you solve the task two weeks later. What brings you back isn't a streak you're afraid to break, but one clear next action for today.
What material works for my own course?
Almost any study text: lecture notes, a handbook, an internal policy, a whole textbook. PDF up to 300 pages, DOCX and Markdown of the same size, files up to 50 MB. Scans work too: we recognise the text ourselves. The system works out the course's subject itself, and you can correct it before the build.
What happens to my file?
The file is used only to build your course: the text goes into the build without your name or email. Only you can download the file; people you share the course with see only the excerpts a lesson relies on. Delete the course and the file and excerpts are deleted. An outline not approved within 7 days is deleted together with the file. Who processes the file and where — see "Data processing".
How much time a day?
As much as you decide: you choose the daily limit. Skip a week — you won't face a wall of a hundred cards.
What if I can't solve the task?
The course won't get stuck. Three attempts, and before each one you see what's still open. What didn't work comes back in review.
Two weeks from now you'll either solve a new task yourself or know exactly what to review.
The first block of any course is free, no card.