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Synapsi
Pricing · 3-day free trial

Start free. Unlock everything for 3 days, free.

Sign up free with no credit card and build a real study kit from your own lecture. A 3-day free trial opens all of it: mind map, quiz, Feynman test, spaced repetition, and chat. The trial needs a card and renews as Pro unless you cancel. Or pay per lecture with credits that never expire.

On web, iOS, iPad, Mac & Android. One subscription works on every device you sign in to.

Free
$0to start
Build your first study kit free, no card. The 3-day trial unlocks all of it.
  • Free to start, no card
  • Unlimited notes from any source
  • Preview of the summary, flashcards & quiz
  • Notes stay saved, unlock any time
  • One credit opens one full kit
  • Web + mobile
MOST POPULAR
Pro
$4/ mo$9.99/mo
Billed $48 a year. Save 60%.
  • Starts with a 3-day free trial
  • Full study kit on every note
  • AI chat, Feynman test & mind-map expand
  • 50 MB uploads, full-depth kits
  • Unlimited flashcards & quiz
  • Priority email support
Lifetime
$199one-time
Pay once. Yours forever.
  • Everything in Pro
  • All future features
  • Founder badge
  • No subscription to manage
  • Refundable for 30 days
No subscription?

Buy lecture credits instead.

One credit processes one lecture: summary, mind map, flashcards, quiz, and Feynman test included. Credits never expire and work on the free tier.

10 lectures
$5.99
$0.60 / lecture
BEST VALUE
30 lectures
$14.99
$0.50 / lecture
100 lectures
$44.99
$0.45 / lecture

Compare features

FeatureFreePro
3-day free trial of everything✓✓
New notesUnlimitedUnlimited
Study kit on a new notePreview, or full with a creditFull kit
Read your notes & summaries✓✓
Flashcard & quiz review (SM-2)✓✓
Upload size25 MB50 MB
Kit depth on long docsStandardFull detail
Flashcards & quiz per kitUp to 50Unlimited
Chat with your notesTrial only✓
Feynman testTrial & credit notes✓
Mind mapView what you unlocked✓ + AI expand
Folder organization✓✓
Cross-device sync✓✓
Priority support✗✓
Pricing FAQ

Common questions about pricing.

Yes. Signing up is free and takes no card, and you can make as many notes as you want. Each kit is real, and on a free account you see part of it: the 3-day free trial opens the rest, or one credit opens one lecture in full with its Feynman test. Reading your notes and reviewing your flashcards and quizzes stays free. Chat and mind-map expand need Pro.

Start free. No card until you unlock everything.