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Leo · Deutsch

German · available in Switzerland, Germany, Austria, Liechtenstein, Namibia · Levels 1–5
Ages and levels: tutors Juniors (13 and under) · Euler Levels 1–5 · as built

A computer program, not a person. Named for Leonhard Euler.

A Leo session is a live tutoring conversation in this language at your child's Level, 25 or 50 minutes, typed, on STELLA. Your child brings the difficulty; Leo asks before it tells and never gives the answer first. Every word is kept and shown to you.

Leo speaks 11 languages — more on request. A language joins the directory once Leo passes a short tutoring test in it with a native-speaker Faculty member. Leo is not from anywhere: available in names the countries where Deutsch is a school language.

A Leo session never moves the Euler Index or the World Rankings: it is tutoring, not an adventure.

Book a Leo session: log in as the parent in the Family space (the Euler100 login works here), choose your child and the length, and pay. Payments open with the founder's go; until then nothing can be bought and no price is shown.
Parent-facing view. A Leo session is typed, on STELLA, with a program: no camera, no voice, no contact outside STELLA, nothing asked about your child. A computer program, not a person. Named for Leonhard Euler.

No calendar

Leo has no slots to tick: a paid session starts when your child opens it, any day, any hour, and runs for its 25 or 50 minutes. Human Faculty members publish their calendars; Leo waits.