Quadratic Master vs Linear Equations Calculator
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
Linear Equations Calculator
This educational app solves linear equations with detailed step-by-step solutions and visual plots. It supports various input methods, including points and slopes, and saves all calculations in a history log for easy access and sharing.
- Step-by-step linear equation solving
- Graphical plotting of results
- Calculation history log
- Supports various input methods (points, slope)
- Decimal and fraction input support
- Solution sharing functionality
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Get your homework done instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and compute linear equations from slope, intercept, or two points – including graphical visualization. HOW IT WORKS Enter your values in the appropriate fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps are always fully shown. If you need many solutions in a short time, various purchase options are available. EXTRAS - Overview of input options - Curated learning videos - Feedback for incorrect inputs - Manage your own solutions - Introduction to the app CONTACT Questions and feedback via Discord or directly in the app review.
Screenshots
Verdict
The clearest difference is rating: Quadratic Master at 4.6 against Linear Equations Calculator's 4.1. Quadratic Master also leads on ratings volume (333 vs 28). Linear Equations Calculator's advantage is update cadence (every 3 weeks vs every 5 months) and device support (3 vs 1). On price, review sentiment, ads and in-app purchases 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 and Linear Equations Calculator sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Quadratic Master holds the better App Store score, 4.6 against 4.1. That said, the two scores are not equally well evidenced: Quadratic Master has 333 ratings behind it against 28, so its average is the more settled of the two. Written reviews complicate that: 74% of Quadratic Master's written reviews are positive against 75% of Linear Equations Calculator's, so the app with the better star average is not the one people write more warmly about.
Quadratic Master ships an update every 5 months, Linear Equations Calculator every 3 weeks. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.
| Parameter | Quadratic Master | Linear Equations Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (333 ratings) — better | 4.1 (28 ratings) |
| Positive reviews | 73.5% of reviews | 75.0% of reviews — better |
| Number of ratings | 333 — better | 28 |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 179 MB |
| Age rating | 4+ | 4+ |
| Developer | Lukas Petr | Glindemann, Sennoun, Langer GbR |
Customer experience
Quadratic Master
Linear Equations Calculator
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
Linear Equations Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Quadratic Master
- Full version$3.99
Linear Equations Calculator
- +30 User Tokens$0.29
- +1 Convenience Token / 6h, max. +2$0.59
- +2 Convenience Tokens / 6h, max. +4$0.99
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- +150 User Tokens$0.99
- +300 User Tokens$1.49
- +4 Convenience Tokens / 6h, max. +8$1.59
- Remove Ads$1.99
- Lifetime Access$1.99
Questions
Is Quadratic Master free?
Is Linear Equations Calculator free?
Which has better reviews, Quadratic Master or Linear Equations Calculator?
Do Quadratic Master or Linear Equations Calculator have ads?
Which is updated more often, Quadratic Master or Linear Equations Calculator?
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