Adaptive learningFor real classes
A textbook that teaches back.
Learn the idea. Work the problem. Ask for help. Alder's Book keeps the entire learning loop in one adaptive place.
No signup · about 5 minutes
Piloted at Skidmore College 4,000+ expert-approved questions
Organic ChemistryMechanisms, made visible.
Inside the productOne uninterrupted path
From “what does this mean?”
to “I’ve got it.”
The reading, practice, feedback, and help all stay on the same page, so momentum never breaks.
Read the idea in context.
Short explanations, worked examples, and visual models live beside the exact concept you are learning.
- 01Understand
Short explanations, worked examples, and visual models live beside the exact concept you are learning.
- 02Practice
Every lesson moves naturally into expert-approved problems, with deterministic feedback on every attempt.
- 03Get unstuck
Diels sees the lesson, your recent work, and where you paused, then gives the smallest useful hint.
One platform · every class
Built for every class
Built for
Organic Chemistry.
Watch the SN2 solve itself: backside attack, clean inversion.
Built for
General Chemistry.
The atom builds up electron by electron, in the order it actually fills.
Built for
Accounting.
FY2026 · UNADJUSTED
Trial Balance
Watch the books balance, with every debit and every credit accounted for.
By the numbers
Trusted answers, not guesses.
- 4,000+Expert-approved practice questions
- 14Days free with a professor’s class code
- 100%Deterministic grading: AI explains, but never decides right or wrong
What you get
One platform replaces your textbook, workbook, and tutor.
Here’s what that actually looks like.
Diels, your AI tutor
Ask anything, any time. Diels knows what you’ve practiced, where you’re stuck, and what your professor’s syllabus says comes next.
Practice built in
Every concept has problems. Every problem has feedback. Every attempt updates a private mastery model only you and your professor see.
Adaptive to you
Spaced repetition decides what comes back. Harder where you need it, lighter where you don’t. Nothing wasted.
Try it · No signup
See it in action.
A forensic chemistry case in about 5 minutes: read an IR spectrum, identify a seized substance, and learn the why behind every step.
Founding team
Built by undergrads at Skidmore.
David Steinberger
I’ve been building software since high school, but I’d never thought about starting a company until Solayman showed me the problem he wanted to solve. Chemistry students were being failed by tools that either bored them to death or, increasingly, guessed at their answers with AI.
My job is to make sure Alder's Book does neither. The platform is built on a deterministic rule engine, not a language model, because the chemistry has to be right before anything else matters. AI explains the why. The rules decide the what.
Solayman Ararba
Growing up in a neighborhood with limited educational resources and later attending one of the wealthiest private schools in America on scholarship showed me one thing: the gap between thriving and not isn’t talent. It’s access.
That gap widens for students with ADHD, like me. Traditional static learning has never worked for the way I think, so I’ve spent years inventing my own methods. Alder's Book exists to lower the cost barrier to STEM and build a learning experience that works for students who learn differently.