Observed arrival · 2026-09-19
Nabla — Math, maxed.
An offline university-math practice app covering calculus, linear algebra, differential equations, and probability.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Engineering and STEM students studying university mathematics
- Worth noticing
- The homepage demonstrates calculus through Newton’s apple, with interactive-looking chapters on slopes, integrals, and orbital motion.
Field notes
The homepage structures calculus as a sequence of historical and visual explanations: a falling apple introduces instantaneous speed, shrinking intervals motivate the derivative, and thinner rectangles lead toward the integral. It also shows a practice system with daily selection, mistake-based follow-up, formulas, leagues, feedback, and a profile. The page states that answers are checked by a computer algebra system and that the app works offline without an account.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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