The training ground for Euler100
Juniors, ages 13 and under Seniors 14–18 open in 2027
STELLA lays the mathematical basics of every Euler level, with vetted human tutors and Leo, the AI tutor; one account works on both platforms.
Booking, honestly
Pick a tutorEvery tutor is identity-checked and safeguarding-vetted before a child meets them. Accreditation is earned only: identity check, safeguarding vetting, contribution record. The tag reads in vetting until Swiss eduGLOBE has cleared a member by hand. Find your tutor →
Book a slotLive calendars in your own time zone; the parent books, never the child. Teachers tick the slots they can teach, month by month; you see them in your own zone. Either side may cancel at no charge up to 24 hours before. Booking, honestly →
Pay, then it is confirmedOne clear price with the split shown; a booking is confirmed only when payment clears. The teacher's fee is 75% and STELLA's share 25%, shown at every checkout. The trial lesson is refunded, no questions asked, if you flag it within 48 hours. Booking, honestly →
One account, both platformsYour Euler100 account works here unchanged; your child's own login opens their space. A parent opens the account on euler.swiss; the login name and PIN the parent creates open the candidate's own space here. Everything the child does is visible to the parent. The Family space →
Safe by designSessions with Juniors are recorded and start with an on-camera check-in. Messages, booking and payment stay on STELLA; the parent books and pays, never the child; no contact outside the platform; no child is ever named in public. Booking, honestly →
Your time zoneEvery slot shows in your own local time, correct across daylight-saving changes. Teachers tick their slots in their own zone, month by month; you see them converted into yours, clearly labelled, and can switch zones at any time. Find your tutor →
No hidden feesThe teacher keeps 75%, STELLA's share is 25%, shown at every checkout. No set-up fee and no monthly cost for a tutor; no .99 pricing anywhere; the split is stated at checkout, never billed after the fact. Booking, honestly →