Science Open Library Now accepting students

Physiology,
made visible.

Evidence-based medical physiology. Cinematic video lessons, an AI tutor grounded in Guyton & Hall, and board-style assessment — in one learning environment.

No card required for trial · Full library access · Cancel anytime

Watch a sample lesson
Cardiovascular
Frank–Starling mechanism — preload & afterload
18:45
[G&H · Ch.9 · §3]
What SOL is built on
01

Evidence-based first

Every lesson and every AI response traces back to peer-reviewed physiology literature. No opinions, no hallucinations, no unsourced claims. Every factual claim is cite-backed to Guyton & Hall or the supporting canon.

02

Cinematic visual learning

Academy-level 3D medical illustration and animation, produced to the visual standard of leading medical-school simulation suites. Mechanisms are seen before they are described.

03

A tutor that cannot guess

The SOL AI Agent is architecturally incapable of answering outside its vetted knowledge base. Students trust what they learn — because every answer is grounded, cited, and auditable.

How it works

From landing to learning in under two minutes

1
Start trial
Sign up with email or Google — no card required
2
Set your path
Pick your region, year & discipline in 30 seconds
3
Watch
Your first recommended lesson starts immediately
4
Practice
Checkpoint quizzes test retrieval mid-lesson
5
Ask
The AI tutor answers anything — with citations
Students on SOL

"I needed to actually understand mechanisms — not just memorize slides before the exam. SOL's combination of visual lessons and the AI tutor is unlike anything else I've used."

Maya C.
MD Year 2 · Tel Aviv, Israel

"On a 25-minute commute, I can watch a lesson at 1.5×, take the quiz, and mark weak spots for review. SOL actually fits how I study between ward shifts."

Lars E.
MD Year 3 · Groningen, Netherlands

"Board-grade physiology with visual quality I actually retain after one watch. The AI tutor in Socratic mode helped me finally understand pressure-volume loops."

Jordan P.
MS2 (DO) · Michigan, USA

"Most physiology resources over-index on MD-track depth. SOL's pre-hospital lens gives me the clinical reasoning I actually need at a scene — not just for a viva."

Aria T.
BSc Paramedic Science · London, UK
Pricing

One product. Full access. Two commitment windows.

Every tier unlocks the full library and the full AI tutor — no content gating.

Monthly
Flexible
$29 / month

Full library and full AI tutor. Cancel anytime.

  • Full video library access
  • Unlimited AI tutor
  • All quiz types & board-style sets
  • Progress tracking & streaks
  • Cancel anytime
Start free trial
7-day trial
Try first
Free

Full access for 7 days. No card required. Upgrade at any time.

  • Full library for 7 days
  • Full AI tutor for 7 days
  • All exam lenses & filters
  • No credit card required
  • Choose your plan at day 7
Start trial — no card

€27 / €229 per month/year for EU  ·  ₪99 / ₪899 for Israel  ·  See full pricing →

Built on evidence
520
Lessons at full G&H coverage
9
Physiological systems
100%
Peer-reviewed source citations
≥92%
AI factual correctness (MD-graded)

Physiology deserves a learning environment as rigorous as the field itself.

SOL is that environment. Start your 7-day trial — no card required.

Start learning today