functionCalculator vs Parametric Factorization
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.
Parametric Factorization
This application helps users factor quadratic trinomials by entering three variables. It provides detailed solution steps and stores all calculations in a history for easy access and sharing. Supports positive and negative numbers, as well as decimals.
- Factors quadratic trinomials
- Detailed solution steps
- Input history
- Supports decimals and negative numbers
- Shareable solutions
- Ad removal option
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No tricks, no guessing. Factor quadratic equations using a parametric method – fully and clearly understandable. HOW IT WORKS Enter the coefficients a, b and c of the equation ax² + bx + c. The factorization is derived step by step in a systematic way. You can share results at any time. 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 can be used for free. 24/7 access to your solutions. All solution steps are always shown completely. If you use the app more intensively, various purchase options are available. EXTRAS - 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: functionCalculator at 4.3 against Parametric Factorization's 2.9. functionCalculator also leads on in-app purchases (none vs 8) and iOS requirement (10.3 vs 15.0). Parametric Factorization's advantage is ads (none vs shown) and update cadence (fortnightly vs every 11 months). On price, 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. Parametric Factorization sells 8 one-off in-app purchases. functionCalculator asks for nothing beyond the download.
functionCalculator holds the better App Store score, 4.3 against 2.9. Both are backed by a comparable volume of ratings — 6 and 8 respectively.
functionCalculator ships an update every 11 months, Parametric Factorization fortnightly. The most recent releases landed on June 1, 2026 and August 26, 2026 respectively.
| Parameter | functionCalculator | Parametric Factorization |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) — better | 2.9 (8 ratings) |
| Positive reviews | — | 40.0% of reviews |
| Number of ratings | 6 | 8 — better |
| 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
Parametric Factorization
In-app purchases
functionCalculator
No in-app purchases
Parametric Factorization
- +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 Parametric Factorization free?
Which has better reviews, functionCalculator or Parametric Factorization?
Do functionCalculator or Parametric Factorization have ads?
Which is updated more often, functionCalculator or Parametric Factorization?
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