Comparison

Unit Eater vs Thrive Sleep

Price, ratings, monetisation and update history for both apps, side by side โ€” 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, โ€ฆ * Constants: mass of proton, neutron, electron, Avogadro's constant, electric field constant, gas constant, Planck's constant, โ€ฆ * Angles: radian, degree, degree-minute, degree-second, gradian, turn, steradian, โ€ฆ * Length: meter, mile, inch, foot, yard, nautical mile, chain, furlong, cable length, rod, โ€ฆ * Area: square meter, hectare, acre, are, square kilometer, square inch, square foot, square yard, โ€ฆ * Volume: liter, cubic meter, fluid ounce, gallon, gill, pint, quart, barrel, tablespoon, teaspoon, โ€ฆ * Mass: gram, ton, ounce, pound, carat, grain, โ€ฆ * Time: second, minute, hour, day, year, โ€ฆ * Speed: meter per second, kilometer per hour, miles per hour, knot, speed of light, โ€ฆ * Acceleration: gravitational acceleration, meter per second squared, โ€ฆ * Energy: joule, kilocalorie, erg, watt-hour, electronvolt, โ€ฆ * Power: watt, horsepower, โ€ฆ * Force: Newton, pond, kilopond, tf, ozf, lbf, โ€ฆ * Torque: Newton meter, ozfin, ozfft, lbf*in, โ€ฆ * Frequency: Hertz, revolutions per minute, โ€ฆ * Pressure: pascal, bar, atm, at, Torr, mmHg, osi, ose, psi, psf, โ€ฆ * Viscosity: Poise, Stokes, โ€ฆ * Density: gram per cubic centimeter, kg per cubic meter, โ€ฆ * Radiation: Becquerel, Curie, Rutherford, Roentgen, Gray, Sievert, rem, โ€ฆ * Light: candela, lumen, lux * Electricity: volt, ampere, ohm, coulomb, elementary charge, farad, siemens, โ€ฆ * Magnetism: Weber, Tesla, Henry, โ€ฆ 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

Thrive Sleep

Read full description

Control your smart bed through the mobile phone App!

Screenshots

Unit Eater4 screens
Thrive Sleep4 screens

Verdict

The call

The clearest difference is in-app purchases: Thrive Sleep at none against Unit Eater's 2. Thrive Sleep also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Unit Eater ships an update fortnightly, Thrive Sleep every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard2 real differences ยท 6 level
Unit Eater versus Thrive Sleep: the parameters behind the verdict, then further details
ParameterUnit EaterThrive Sleep
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyFortnightly โ€” betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad, Mac โ€” betteriPhone, iPod
Requires iOS17.013.0 โ€” better
Further details โ€” not scored
Size47 MB35 MB
Age rating4+4+
DeveloperTom Leon SchmidtQingdao Richmat Intelligence Technology Inc.

In-app purchases

2 purchases

Unit Eater

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

Thrive Sleep

No in-app purchases

Questions

Is Unit Eater free?
Unit Eater is free to download, with in-app purchases available.
Is Thrive Sleep free?
Thrive Sleep is free to download, with no in-app purchases.
Do Unit Eater or Thrive Sleep have ads?
Neither Unit Eater nor Thrive Sleep shows ads.
Which is updated more often, Unit Eater or Thrive Sleep?
Unit Eater ships an update fortnightly, and Thrive Sleep every 3 weeks. Most recently, Unit Eater was updated on November 4, 2026 and Thrive Sleep on October 31, 2026.

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