Comparison

functionCalculator vs Parametric Factorization

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • Factors quadratic trinomials
  • Detailed solution steps
  • Input history
  • Supports decimals and negative numbers
  • Shareable solutions
  • Ad removal option
Features
Read full description

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

functionCalculator2 screens
Parametric Factorization4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Parametric Factorization sells 8 one-off in-app purchases. functionCalculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

functionCalculator ships an update every 11 months, Parametric Factorization fortnightly. The most recent releases landed on June 1, 2026 and August 26, 2026 respectively.

Scorecard6 real differences · 4 level
functionCalculator versus Parametric Factorization: the parameters behind the verdict, then further details
ParameterfunctionCalculatorParametric Factorization
PriceFreeFree
Rating4.3 (6 ratings) — better2.9 (8 ratings)
Positive reviews40.0% of reviews
Number of ratings68 — better
Update frequencyEvery 11 monthsFortnightly — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.3 — better15.0
Further details — not scored
Size6 MB179 MB
Age rating4+4+
DeveloperJirou FukudaGlindemann, Sennoun, Langer GbR

Customer experience

functionCalculator

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%

Parametric Factorization

All ratings8 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

In-app purchases

None

functionCalculator

No in-app purchases

8 purchases

Parametric Factorization

One-time8
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +2 Convenience Tokens / 6h, max. +4$0.99
Show 5 more
  • +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?
functionCalculator is free to download, with no in-app purchases.
Is Parametric Factorization free?
Parametric Factorization is free to download, with in-app purchases available.
Which has better reviews, functionCalculator or Parametric Factorization?
functionCalculator is rated higher. functionCalculator averages 4.3 out of 5 from 6 ratings, while Parametric Factorization averages 2.9 from 8 ratings.
Do functionCalculator or Parametric Factorization have ads?
functionCalculator shows ads; Parametric Factorization does not.
Which is updated more often, functionCalculator or Parametric Factorization?
functionCalculator ships an update every 11 months, and Parametric Factorization fortnightly. Most recently, functionCalculator was updated on June 1, 2026 and Parametric Factorization on August 26, 2026.

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