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Tools
Free tools on 4AB that you can open and use straight away: calculators, the periodic table, the question bank and more.
10 things to openABC Chemistry Calculator
Free online calculator suite for chemistry, physics, maths and accounting — molar mass, equation balancer, periodic table, pH, kinematics, derivatives and more.
Interactive Periodic Table
A premium, interactive periodic table of all 118 elements. Tap any element for atomic mass, electron configuration, physical and chemical data — then open…
Symmetry Lab
Point groups in 3D
Question Bank & PYQs
Previous-year questions exactly as printed — CSIR-NET, GATE and IIT-JAM chemistry, plus general aptitude. Free, by chapter or by exam.
Questions by exam and year
CSIR-NET papers year by year, and the GATE and IIT-JAM collections.
Notes Maker
Topic notes built from the bank: worked examples are real questions with their printed answers, and anything AI drafts is labelled.
Whiteboard
Teach one previous-year question at a time in classroom-size type, with a digital whiteboard beside it.
BP & Sugar Tracker
Record blood pressure, blood sugar, pulse, weight, medicines, meals, activity, sleep and symptoms in one place.
Discount Coupons
Great Referral Discount Coupon Code — premium coupons, deals, brands and buying guides.
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