functionCalculator vs Quadratic Equation Roots
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
functionCalculator
This app calculates the value of mathematical functions y = f(x) for various types of numbers, including irrational ones. It displays results as exact fractions with square roots and can convert them to decimals. The app also supports calculations involving two different input values, alpha and beta.
- Calculate function values for any number type
- Display results as exact fractions
- Convert results to decimal
- Perform operations on two input values
- Supports irrational numbers
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Calculate the value of the mathematical function y = f (x). It is possible to assign to x any integer, rational number, irrational number. For example, you can assign square root 2 to x. It is not necessary to fix it to decimal. The calculation result is output in the form of a fraction using square root. It is exactly the same as math calculations. You can also convert the result to decimal. Calculate the values of f (α) and f (β) for two kinds of values, x = α and x = β, and f (α) + f (β), f (α) - f ), F (α) * f (β), f (α) / f (β) can also be calculated.
Quadratic Equation Roots
Easily find the zeros of a function using the pq formula. Input values for p and q, and the app calculates the solution. Features include a history of calculations and the ability to share results.
- PQ formula calculation
- Input p and q values
- History of calculations
- Shareable solutions
- Fraction input support
- Ad removal option
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Get your homework done instantly. Prepare for exams stress-free. Free, complete step-by-step solutions. Calculate roots using the pq formula (x² + px + q). HOW IT WORKS Enter your values in the correct 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, such as: - which features are used - how many solutions are generated This helps us improve. We cannot draw any conclusions about you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps always remain complete. If you need many solutions in a short time, various purchase options are available. EXTRAS - curated learning videos - feedback on 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 in-app purchases: functionCalculator at none against Quadratic Equation Roots's 8. functionCalculator also leads on iOS requirement (10.3 vs 15.0). Quadratic Equation Roots's advantage is ads (none vs shown) and update cadence (fortnightly vs every 11 months). On price, rating, ratings volume and device support 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 Equation Roots sells 8 one-off in-app purchases. functionCalculator asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.3 for functionCalculator against 4.3 for Quadratic Equation Roots. Both are backed by a comparable volume of ratings — 6 and 6 respectively.
functionCalculator ships an update every 11 months, Quadratic Equation Roots fortnightly. The most recent releases landed on June 1, 2026 and September 14, 2026 respectively.
| Parameter | functionCalculator | Quadratic Equation Roots |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) | 4.3 (6 ratings) |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | 6 | 6 |
| Update frequency | Every 11 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 6 MB | 179 MB |
| Age rating | 4+ | 4+ |
| Developer | Jirou Fukuda | Glindemann, Sennoun, Langer GbR |
Customer experience
functionCalculator
Quadratic Equation Roots
In-app purchases
functionCalculator
No in-app purchases
Quadratic Equation Roots
- +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 functionCalculator free?
Is Quadratic Equation Roots free?
Which has better reviews, functionCalculator or Quadratic Equation Roots?
Do functionCalculator or Quadratic Equation Roots have ads?
Which is updated more often, functionCalculator or Quadratic Equation Roots?
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