Quadratic Master vs Derivative
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quadratic Master
This app helps users solve and learn about quadratic equations, inequations, and functions. It offers tools for students and professionals, including solvers, formulas, and visual aids like 3D parabola models. Share solutions and explore function graphs with this educational math tool.
- Quadratic equation solver
- Quadratic inequation solver
- Quadratic function solver
- 3D rotating parabola model
- Graph mixer
- Detailed solution explanations
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Quadratic Master is the best app for solving and learning quadratic equations, inequations, and functions on your iPhone. Whether you are a high-school student currently learning about quadratics in your math class or somebody who needs to solve quadratic functions on a regular basis, Quadratic Master is for you. Main benefits: • Save time on your math homework • Learn about quadratics in just a fraction of time • Share solutions with your classmates. Free version offers: • Quadratic equation solver (roots, discriminant, factorization) • Formulas and guide for manually solving quadratic equations • Quadratic inequation solver Quadratic function solver (Vertex form) 3D rotating model of parabola for better understanding of quadratics in geometry Full version provides: • Detailed solution for quadratic equations • Quadratic function solver - general and factored form • Explanations and formulas for all quadratic function properties • Quadratic inequation solver with ≥ and ≤ inequality • Graph mixer - the perfect tool to play with and explore quadratic function graphs Rapid-fast solving with Single-digit input mode The full version is available for a small one-time fee. - - - - - I’ve built Quadratic Master back in 2009 when I was in high school and I was learning about quadratic equations in my math class. It is the first app I’ve ever built, and at the risk of sounding cheesy - it still holds a special place in my heart. Even though it was never a significant moneymaker, I’ve kept it updated throughout the years. And I’m happy to say that it has attained over 95.000 downloads to date. If you enjoy using the app, please consider buying the full version. Thank you. - Lukas Petr, author of Quadratic Master
Derivative
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The DerivativeCalculus is a simple but elegant app to find the derivatives of complex multivariable functions. You can find the partial derivatives of a multivariate function and share it with others or save it locally. You can create a beautiful high quality partial derivative tree and share it with others or save it locally. Derivatives are shown in beautifully written mathematical expression It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This app also has a Study page to help you learn important differentiation rules like, product rule, chain rule, quotient rule, ect. This app is perfect for students learning calculus. Sharpen you brain by using this app and learning about the calculus. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!
Screenshots
Verdict
The clearest difference is in-app purchases: Derivative at none against Quadratic Master's 1. Derivative also leads on update cadence (monthly vs every 5 months) and device support (3 vs 1). Quadratic Master's advantage is ads (none vs shown). On price and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Quadratic Master sells 1 one-off in-app purchase. Derivative asks for nothing beyond the download.
Quadratic Master ships an update every 5 months, Derivative monthly. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.
| Parameter | Quadratic Master | Derivative |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (333 ratings) — better | — |
| Positive reviews | 73.5% of reviews | — |
| Number of ratings | 333 — better | — |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Lukas Petr | Om Prakash Chapagain |
Bugs and requests
Quadratic Master
Reported bugs
10 issues- Input keypad incomplete after iOS update
- App not working/unusable
- Cannot enter problems
- Not showing in app library
- Cannot change addition to subtraction
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- Flipped positive and negative of a specific factor
- App crashes when trying to open
- Wouldn't let me open the app
- Pictures are just for show
- Does not graph quadratic functions
Requested features
3 requests- Ability to use large decimals/scientific notation
- Cooler icon
- Change standard formula to vertex form
Derivative
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Quadratic Master
- Full version$3.99
Derivative
No in-app purchases
Questions
Is Quadratic Master free?
Is Derivative free?
Do Quadratic Master or Derivative have ads?
Which is updated more often, Quadratic Master or Derivative?
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