Comparison

Graphulator With Calculus vs Unit Eater

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

Head to head
About

Graphulator With Calculus

Features
Read full description

Graphulator is a numerical graphing calculator for 2 or 3 variable equations. Plot both functions and non-functions. Includes data output! Now includes numerical calculus. Scientific calculator. Trigonometry. Logarithms. Absolute values. Scientific notation. Basic Calculator. Function calculator. Two variable calculator. Three variable calculator. Numerical analysis. Drag grid or use controls to move or change the scale. Drag three variable grid to rotate. Graphulator can miss non-functions 1/50 the grid scale. The user can adjust the accuracy or change the grid scale including adjusting the width and height independently. Changing the accuracy requires upgrade. Graphulator boasts being the only calculator which can perform calculus on non-functions numerically (equations which cannot be reduced to a function). It should be noted that these derivatives differ from standard calculus. Graphulator boasts being the only numerical calculator which can plot three variable non-functions. (Equations of the form f(xyz) = f(xyz)). If you believe either of these claims to be untrue, let us know (contact@Graphulator.com).

About

Unit Eater

This utility app functions as a powerful calculator that handles unit conversions and calculations. It supports a vast array of predefined units and allows users to define their own, making it ideal for scientific and academic tasks. Features include a calculation history, customizable results, and dark mode.

Highlights
  • Unit conversion and calculation
  • Custom unit definition
  • Extensive unit library
  • Calculation history
  • Customizable result format
  • Dark mode
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Unique calculator that not only converts units, but can also perform calculations with them. Perfect for school, university, work, or personal use! For math, physics, chemistry, biology, engineering, or any other natural sciences! - Standard calculator functions usable with or without units - Target unit freely definable - Define your own units if you need them - History of recent calculations - Quick transfer of parts or entire calculations from history - ANS function to dynamically use the last result - Customizable result format - Quick search - Quick access to important functions like square or cube - Undo and redo of last steps - Dark mode Boost your productivity, focus on the essentials, and leave conversion errors in the past! Supports many units, prefixes, and constants: * Prefixes: kilo, mega, giga, tera, centi, milli, micro, nano, … * Constants: mass of proton, neutron, electron, Avogadro's constant, electric field constant, gas constant, Planck's constant, … * Angles: radian, degree, degree-minute, degree-second, gradian, turn, steradian, … * Length: meter, mile, inch, foot, yard, nautical mile, chain, furlong, cable length, rod, … * Area: square meter, hectare, acre, are, square kilometer, square inch, square foot, square yard, … * Volume: liter, cubic meter, fluid ounce, gallon, gill, pint, quart, barrel, tablespoon, teaspoon, … * Mass: gram, ton, ounce, pound, carat, grain, … * Time: second, minute, hour, day, year, … * Speed: meter per second, kilometer per hour, miles per hour, knot, speed of light, … * Acceleration: gravitational acceleration, meter per second squared, … * Energy: joule, kilocalorie, erg, watt-hour, electronvolt, … * Power: watt, horsepower, … * Force: Newton, pond, kilopond, tf, ozf, lbf, … * Torque: Newton meter, ozfin, ozfft, lbf*in, … * Frequency: Hertz, revolutions per minute, … * Pressure: pascal, bar, atm, at, Torr, mmHg, osi, ose, psi, psf, … * Viscosity: Poise, Stokes, … * Density: gram per cubic centimeter, kg per cubic meter, … * Radiation: Becquerel, Curie, Rutherford, Roentgen, Gray, Sievert, rem, … * Light: candela, lumen, lux * Electricity: volt, ampere, ohm, coulomb, elementary charge, farad, siemens, … * Magnetism: Weber, Tesla, Henry, … Is your desired unit not listed? You can define any additional units! Privacy Policy: https://www.iubenda.com/privacy-policy/22446614 Terms and Conditions: https://www.iubenda.com/terms-and-conditions/22446614

Screenshots

Graphulator With Calculus3 screens
Unit Eater4 screens

Verdict

The call

The clearest difference is in-app purchases: Graphulator With Calculus at none against Unit Eater's 2. Graphulator With Calculus also leads on iOS requirement (8.0 vs 12.0). Unit Eater's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads 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. Unit Eater sells 2 in-app purchases, starting at $0.99 per month. Graphulator With Calculus asks for nothing beyond the download.

UpkeepUpdate frequency

Graphulator With Calculus ships an update every 2 months, Unit Eater every 2 weeks. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 5 level
Graphulator With Calculus versus Unit Eater: the parameters behind the verdict, then further details
ParameterGraphulator With CalculusUnit Eater
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS8.0 — better12.0
Further details — not scored
Size79 MB65 MB
Age rating12+4+
DeveloperPaul TurmelTom Leon Schmidt

In-app purchases

None

Graphulator With Calculus

No in-app purchases

2 purchases

Unit Eater

Subscriptions1
  • Premium - Monthly$0.991 Month
One-time1
  • Premium - Pay once$3.99

Questions

Is Graphulator With Calculus free?
Graphulator With Calculus is free to download, with no in-app purchases.
Is Unit Eater free?
Unit Eater is free to download, with in-app purchases available.
Do Graphulator With Calculus or Unit Eater have ads?
Neither Graphulator With Calculus nor Unit Eater shows ads.
Which is updated more often, Graphulator With Calculus or Unit Eater?
Graphulator With Calculus ships an update every 2 months, and Unit Eater every 2 weeks. Most recently, Graphulator With Calculus was updated on October 5, 2026 and Unit Eater on September 30, 2026.

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