Schön, dass du wieder da bist!
Math apps with explanations · No subscription trap
Grades 5 to 12
Usually it’s just one missing building block.
We find the gap and close it. Built by a math tutor who knows where students get stuck.
The apps, tasks and explanations are in German.
- No subscription, ends on its own
- No annoying emails
- 5 free tasks per day in every app
- No account needed to get started
I’m Stephan. I had to repeat 8th grade, and today I have a master’s degree in financial mathematics. I know how it feels when math just doesn’t work, and how great it is when it suddenly clicks. My story
Where do you stand?
10 minutes, no sign-up. Afterwards you see what you know well and where you get stuck.
Which grade are you in? Start the free test:
Sample result · Grade 5
Got something wrong? You see exactly which tasks it was and can practice them right away.
Test coming up?
- Choose the date and topics
- About 15 minutes a day
- A practice test on the second-to-last day
Day 1 is free, after that Pro. From day 2 you need Pro or the trial week (7 days free, no payment details).
Apps for your grade
Explain, practice, test. For grades 5 to 12, with curve sketching and combinatorics for the upper grades.
The apps, tasks and explanations are in German.
Grades 5 and 6
Fractions (grades 5–6) Prime numbers, GCD and LCM (grades 5–6) Converting units (grades 5–6) Rectangle and cuboid (grades 5–6) Symmetry (grades 5–6) Large numbers and rounding (grades 5–6) Data and charts (grades 5–6) Times tables (grade 5) Decimals (grade 6) Rational numbers (grades 6–7) Proportions and the rule of three (grades 6–7) Angles and triangles (grades 6–7)Grades 7 and 8
Percentages (grade 7) Equations (grades 7–8) Algebraic expressions (grades 7–8) Probability and box plots (grades 7–8) Linear functions (grade 8) Triangle, quadrilateral and prism (grade 8) Systems of equations (grade 8)Grades 9 and 10
Square roots and Pythagoras (grade 9) Circle and cylinder (grade 9) Powers (grades 9–10) Similarity and the intercept theorem (grade 9) Trigonometry (grades 9–10) Parabolas (grades 9–10) Pyramid, cone and sphere (grade 10) Exponential functions and growth (grade 10) Two-way tables (grade 10)Upper grades 11 and 12
Combinatorics (grades 11–12) Curve sketching (grades 11–12)For parents: you see how your child is learning
- Weekly overview in your account: what was practiced, what is solid, what still needs work
- Up to 2 children plus a profile for yourself, one pass covers everyone
- Children log in on their own, without your password
- If you like, short messages from Stephan on your phone
- No subscription, every pass ends on its own
Example Lena’s week
75 % correct ↑ better than the weeks before
Class test: 5 days left until the test.
Homework: done, 8 of 10 correct.
Stuck here: adding fractions, mistakes in 4 of 6 tasks.
Prices. No subscription trap.
You pay once and the pass ends on its own. After that you are back on Free, and your progress stays. Nothing to cancel, no marketing emails.
Tutoring with Stephan
Rather learn with a real person?
Online by video, just your child and Stephan, in German. We work on whatever is most pressing: homework, the next test, gaps from earlier years.
Homework right in the app, and Stephan sees where your child gets stuck.
No obligation, no payment details.