Skip to content
INFINITE SUM

Pricing

One lesson free, no card. After that, two ways to keep going. Pick whichever fits how you teach at home.

Pay as you go

$4per lesson

Best if you'll ask for a lesson now and then — homework hits, test prep, the occasional explain-this-again.

  • First lesson free, no card
  • Stock voice library
  • 16:9 / 9:16 / 1:1 download
  • No subscription, no expiry
  • Email permalink — watch anywhere
Try free

Family

$19per month

For families that lean on this every week. Includes your voice clone — every lesson sounds like you.

  • 10 lessons per month
  • Voice clone included
  • Re-render any aspect in 60 sec
  • Cancel anytime, no email gauntlet
  • Unused lessons roll one month
Start Family

Honest answers

What's actually included in the free lesson?
A complete 3-minute animated lesson with stock-voice narration, in whatever aspect ratio you pick. Same engine, same quality as a paid lesson. No watermark on the math itself — just the brand sign-off at the end.
How long does a render take?
A few minutes. We email you the permalink when it's ready, so you don't have to stare at a progress bar. The status page is there if you want to watch it cook.
What math topics work right now?
Coordinate geometry — slope, midpoint, distance, lines — plus the Pythagorean theorem and similar triangles. Algebra 1 is the next push. If your problem isn't covered yet, we'll tell you up front before charging anything.
How does the voice clone work?
On Family only. You record about 20 seconds reading a short sentence we give you. After that, every lesson is narrated in your voice. You can delete the voice anytime — we wipe the biometric data within 24 hours.
Do unused Family lessons roll over?
One month. Use them in the month you paid for, or the month after. We don't hoard your credits to make cancelling feel bad.
What happens if I cancel?
You keep watching every lesson you've already made. The permalinks don't expire. You stop being charged. That's it.
Is there a kid account, a login for my child?
No. Lessons live at private permalinks you share. Your child watches in a browser — no account, no app, no data collected on the kid. That's a deliberate COPPA choice.

Try the first one. See if it lands.

Try free →