# Nabla: College Calculus — Algebra, Math Drills & Steps > Algebra, Math Drills & Steps (iPhone/iPad app by Muhammed Hamza Cakmak.) - Source: https://appshunter.io/ios/app/nabla-college-calculus/id6796978565 (this page in markdown: same URL + `.md`) - Developer: [Muhammed Hamza Cakmak](https://appshunter.io/developer/1884048817) - Category: Education, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.4 · 78 MB - Languages: American English - Released: 2026-08-18 - Data updated: 2026-09-18 - User reviews in markdown: https://appshunter.io/ios/app/nabla-college-calculus/id6796978565/reviews.md ## What is Nabla? Math you can actually trust. Nabla is deliberate practice for university math — the courses engineering and STEM students have to pass. Learn the idea, see a worked example, then drill it until it sticks. VERIFIED, NOT GUESSED Every problem and every answer in Nabla is generated and independently checked by a computer algebra system before it ever reaches you. No scraped question banks, no AI-written answers that sound right and are not. When Nabla shows you a solution, the math behind it has been proven. SEVEN COURSES • Math Foundations — order of operations, fractions, exponents, polynomials, factoring, inequalities, graphs, functions • Calculus I — limits, continuity, derivatives, product and quotient and chain rules, related rates, optimization, integrals, the Fundamental Theorem • Calculus II — integration by parts, partial fractions, improper integrals, sequences and series, Taylor series, parametric and polar curves • Linear Algebra — vectors, matrix products, row reduction, determinants, inverses, linear independence, rank, projections, eigenvalues • Multivariable Calculus — vectors in 3D, partial derivatives, gradients, directional derivatives, tangent planes, double and triple integrals • Differential Equations — separable, linear and exact equations, stability, characteristic roots, oscillations, Laplace transforms, ODE systems • Probability & Statistics — counting, conditional probability, Bayes' rule, distributions, confidence intervals, hypothesis tests, regression 1,500+ verified problems across 91 skills. HOW IT WORKS Each skill opens with a concept lesson and a worked example, then a focused set of practice problems. Get one wrong and you see exactly where the reasoning broke — Nabla names the specific misconception behind the answer you picked, not just a red X. Del, your math spotter, hands you a strategy hint before the full steps. Streaks, XP, levels, daily goals, and weekly leagues keep you coming back. Spaced review brings problems back before you forget them. EXAM MODE Timed, mixed, no hints, no feedback until you hand it in — the same pressure as the real paper. Then a topic-by-topic breakdown showing exactly where the marks went, with the weakest skill first and a route straight into it. WORKS OFFLINE The full problem bank ships inside the app. No account, no sign-up, no internet required to practise. Your progress stays on your device. FREE AND PRO The opening unit of every course is free — a real place to start in all seven, not a demo. Nabla Pro unlocks every remaining unit, removes the hearts limit, opens Del's full hint ladder, and enables Exam Mode. No ads. No account. No data sold. ——— Nabla Pro — auto-renewing subscription • Monthly • Yearly (best value) Prices are shown in your local currency inside the app before you purchase. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Account Settings on the App Store after purchase. Terms of Use: https://hamzacakmakk.github.io/nabla-site/terms.html Privacy Policy: https://hamzacakmakk.github.io/nabla-site/privacy.html Support: https://hamzacakmakk.github.io/nabla-site/support.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Nabla Pro Monthly | $12.99 | per month | | Nabla Pro Annual | $69.99 | per year | ## Version history (last 5 releases) ### 1.0.11 — 2026-09-15 Getting started is faster and clearer. • New setup: pick your course, your deadline, your level and what trips you up. Four taps, then a plan built from your answers. • Your plan shows the whole course up front — how many topics there are, and exactly how much of it is free. • The first lesson is optional and takes two minutes. Mistakes cost no hearts, so you can just try it and see how a lesson feels. • Calculus I & II, Linear Algebra, Multivariable, Differential Equations and Probability & Statistics come first. Math Foundations is still there if you want the algebra refresher. • Del now remembers the mistakes you make and brings them back before they fade, with guided steps instead of just the answer. • Add the Home Screen widget and set a study reminder during setup, or skip both. • Tidier home screen and Exam Mode layouts, widget fixes on iOS 16, and Del finally waves properly. ### 1.0.10 — 2026-09-06 Meet the new Nabla Home Screen widget—see your next lesson, upcoming reviews, and daily goal at a glance. This update also brings a smoother onboarding experience, visual improvements, and performance fixes. ### 1.0.9 — 2026-08-31 A smoother, more interactive onboarding experience with Del. Improved home widgets and smart reminders. Review missed steps directly from lesson results. Navigate back through completed questions more easily. Improved readability for formulas and answer choices. Redesigned heart-limit and Nabla Pro prompts. Smoother app startup and screen transitions. General UI, spacing, stability, and performance improvements. ### 1.0.8 — 2026-08-27 Stay on track with smarter daily study reminders and streak rescue notifications. A refreshed onboarding experience that builds your personalized learning route. Improved Pro paywall with clearer plan selection and benefits. Better formula readability, scaling, and layout across the app. Jump ahead to locked lessons through skill checkpoints. Various visual fixes and performance improvements. ### 1.0.5 — 2026-08-26 Improved formula viewing with smooth pinch-to-zoom support. Large formulas can now be resized and explored more easily. Added quicker access to Nabla Pro from the home screen. Improved iOS stability and runtime reliability. Updated dependencies and included general performance improvements. ## More apps by Muhammed Hamza Cakmak - [Takeover: Daily Habit Tracker](https://appshunter.io/ios/app/takeover-daily-habit-tracker/id6760352061) - [KPSS 2026: Soru Bankası Çöz](https://appshunter.io/ios/app/kpss-2026-soru-bankas-coz/id6786241499) - [Block Puzzle: Line Clear](https://appshunter.io/ios/app/block-puzzle-line-clear/id6798415934) - [DMV Permit Test Prep : 2026](https://appshunter.io/ios/app/dmv-permit-test-prep-2026/id6798435772) - [CDL Test Practice : 2026](https://appshunter.io/ios/app/cdl-test-practice-2026/id6800135409) All apps by Muhammed Hamza Cakmak: https://appshunter.io/developer/1884048817 ## Related topics [nabla](https://appshunter.io/ios/topics/nabla) · [nabala](https://appshunter.io/ios/topics/nabala) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-18.*