Comparison

Unit Eater vs SmartCalc Easy

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

Head to head
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
Read full description

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

About

SmartCalc Easy

Features
Read full description

SmartCalc - Minimalist Calculator with Precision Editing. - Premium User Experience: Enjoy a seamless experience with eye-friendly color palettes and subtle haptic feedback. - Smart History & Ans: View your entire calculation history at a glance and easily reuse previous results (Ans). - Effortless Editing: Made a mistake? Move the cursor to any part of your formula and fix it instantlyβ€”no need to start over. - Universal Compatibility: Experience a perfectly optimized layout for both iPhone and iPad environments.

Screenshots

Unit Eater4 screens
SmartCalc Easy4 screens

Verdict

The call

The clearest difference is in-app purchases: SmartCalc Easy at none against Unit Eater's 2. Unit Eater's advantage is ads (none vs shown) and device support (4 vs 2). On price and update cadence there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Unit Eater sells 2 in-app purchases, starting at $0.99 per month. SmartCalc Easy asks for nothing beyond the download.

UpkeepUpdate frequency

Unit Eater ships an update every 2 weeks, SmartCalc Easy every 3 weeks. The most recent releases landed on September 11, 2026 and September 5, 2026 respectively.

Scorecard4 real differences Β· 4 level
Unit Eater versus SmartCalc Easy: the parameters behind the verdict, then further details
ParameterUnit EaterSmartCalc Easy
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 2 weeks β€” betterEvery 3 weeks
AdsNo β€” betterYes
In-app purchasesYesNo β€” better
MonetizationFree with in-app purchasesβ€”
DevicesiPhone, iPad, iPod, Mac β€” betteriPhone, iPad
Requires iOS12.0 β€” better17.0
Further details β€” not scored
Size65 MB5 MB
Age rating4+4+
DeveloperTom Leon SchmidtYounghan Kim

In-app purchases

2 purchases

Unit Eater

Subscriptions1
  • Premium - Monthly$0.991 Month
One-time1
  • Premium - Pay once$3.99
None

SmartCalc Easy

No in-app purchases

Questions

Is Unit Eater free?
Unit Eater is free to download, with in-app purchases available.
Is SmartCalc Easy free?
SmartCalc Easy is free to download, with no in-app purchases.
Do Unit Eater or SmartCalc Easy have ads?
SmartCalc Easy shows ads; Unit Eater does not.
Which is updated more often, Unit Eater or SmartCalc Easy?
Unit Eater ships an update every 2 weeks, and SmartCalc Easy every 3 weeks. Most recently, Unit Eater was updated on September 11, 2026 and SmartCalc Easy on September 5, 2026.

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