Quadratic Master vs Equation
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
Read full descriptionHide full description
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
Equation
Read full descriptionHide full description
The EquationSolver is carefully designed to be a simple and elegant app. Easy to use, easy to understand, simple and effective It solves system of linear equations, simultaneous linear equations (no limit on the number of equations). It also teaches you the steps to solve such systems. To find a solution, it uses Matrix inversion method or LU decomposition method when inverse is not possible or complicated. The equations are beautifully presented in both: 1) Set of individual equations form 2) Matrix-vector product form. You can also share the beautifully written solution 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 is a perfect app if you are a student learning to solve these kind of equations. There is also a Study page to help you with learning some important linear algebra formulas. 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: Equation at none against Quadratic Master's 1. Equation 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. Equation asks for nothing beyond the download.
Quadratic Master ships an update every 5 months, Equation monthly. The most recent releases landed on September 20, 2026 and June 5, 2026 respectively.
| Parameter | Quadratic Master | Equation |
|---|---|---|
| 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 | 34 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
Show 5 moreShow fewer
- 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
Equation
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Quadratic Master
- Full version$3.99
Equation
No in-app purchases





