Comparison

functionCalculator vs Quadratic Equation Roots

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

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.

Highlights
  • PQ formula calculation
  • Input p and q values
  • History of calculations
  • Shareable solutions
  • Fraction input support
  • Ad removal option
Features
Read full description

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

functionCalculator2 screens
Quadratic Equation Roots4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
functionCalculator versus Quadratic Equation Roots: the parameters behind the verdict, then further details
ParameterfunctionCalculatorQuadratic Equation Roots
PriceFreeFree
Rating4.3 (6 ratings)4.3 (6 ratings)
Positive reviews75.0% of reviews
Number of ratings66
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%

Quadratic Equation Roots

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

functionCalculator

No in-app purchases

8 purchases

Quadratic Equation Roots

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 Quadratic Equation Roots free?
Quadratic Equation Roots is free to download, with in-app purchases available.
Which has better reviews, functionCalculator or Quadratic Equation Roots?
functionCalculator and Quadratic Equation Roots are both rated 4.3 out of 5 on the App Store, from 6 and 6 ratings respectively.
Do functionCalculator or Quadratic Equation Roots have ads?
functionCalculator shows ads; Quadratic Equation Roots does not.
Which is updated more often, functionCalculator or Quadratic Equation Roots?
functionCalculator ships an update every 11 months, and Quadratic Equation Roots fortnightly. Most recently, functionCalculator was updated on June 1, 2026 and Quadratic Equation Roots on September 14, 2026.

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