Comparison

Units Plus Converter vs Conversion Calculator Plus

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

Head to head
About

Units Plus Converter

Easily convert between various units and currencies with a simple, intuitive interface. Features live currency updates for 155 world currencies, refreshed every 15 minutes. Optimized for a wide range of Apple devices, including iPads with Split View support.

Highlights
  • Unit conversion across 12 categories
  • Live currency updates for 155 currencies
  • Optimized for iPhone and iPad
  • iPad Split View support
  • Data-computer data conversion
  • Fuel-mileage conversion
Features
Read full description

SWAP units by pressing button on keypad (lower left) OPTIMIZED for iPhone X, XS, XS Max, XR, 5, 5S, SE, 6, 6+, 7, 7+, 8, 8+ OPTIMIZED for iPad Pro 12.9 (1st, 2nd, 3rd gen), 11, 10.5, 9.7, Air, Air 2, Mini (2nd, 3rd, 4th) iPad Split View supported. ***Now with LIVE Currency Updates for all major currencies in the world*** Very simple and beautifully designed unit converter with 12 categories and many different units: CONVERT: *Area *Currency (155 world currencies updated every 15 min.) *Data-computer data (byte, kilobyte, megabyte, etc.) *Fuel-milage *Length *Power *Pressure *Speed *Temperature *Time (days, weeks, hours, etc.) *Volume (dry and wet) *Weight-mass Currency exchange rates are downloaded every 15 minutes when app is open. Every download uses very small amount of data. Around 1-2kb. Internet connection required. 155 currencies available - This is all world currencies with their respective country flags.

About

Conversion Calculator Plus

This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.

Highlights
  • Unit and currency conversion
  • Supports 160+ currencies (real & crypto)
  • Automatic currency exchange rate updates
  • Simple or carousel design options
  • Dark Mode support
  • Customizable home screen layout
  • Split screen mode on iPad
Features
Read full description

• No full-page ads. • App works without internet. • Rates Saved for Offline use. • Real-time rates updated every minute. • Fast, accurate conversions across 685 units. • Hide unused units, currencies and categories. • Built-in calculator with +, −, ×, ÷, ( and ). • Supports both light and dark appearance. • Custom Home Screen Widgets. Premium Required • Use Siri to convert. Premium Required • Conversions automatically saved to History. • Save all your favorite conversions in 1 place • Interactive rate charts from 1 day to 5 years, plus all available history. • Expand charts to full screen, pinch to zoom, pan and inspect past rates. ----------------------------------------- ALL CONVERSION CATEGORIES COMMON CATEGORIES Pace, Temperature, Data, Currency, Length, Time, Speed, Area, Volume, Pressure, Power, Fuel Economy and Weight. CURRENCIES, CRYPTO & METALS Convert all world currencies, 125 cryptocurrencies and tokens—including Bitcoin, Ethereum and Tether—and four precious metals: gold, silver, platinum and palladium. Compare multiple currencies in one list with Currency+. NUMBERS & GEOMETRY Angle and Amount. PERSONAL & HEALTH Shoe Sizes, Ring Sizes and Blood Sugar. MOTION & MECHANICS Acceleration, Angular Acceleration, Force, Torque, Energy and Moment of Inertia. FLUIDS & MATERIALS Flow, Density, Viscosity, Kinematic Viscosity, Surface Tension, Permeability, Mass Flux Density and Specific Volume. TEMPERATURE & HEAT Temperature Interval, Thermal Conductivity, Specific Heat Capacity, Heat Density, Heat Flux Density, Heat Transfer Coefficient and Thermal Expansion. ELECTRICITY & MAGNETISM Current, Voltage, Charge, Resistance, Capacitance, Inductance, Conductance, Linear Charge Density, Surface Charge Density, Volume Charge Density, Linear Current Density, Surface Current Density, Electric Field Strength, Electric Resistivity, Electric Conductivity, Magnetic Flux (Magnet), Magnetic Field Strength, Magnetic Flux Density and Magnetomotive Force. LIGHT & SOUND Luminance, Illumination, Luminous Intensity, Sound and Frequency. DATA & DESIGN Data Transfer Rate, Image and Typography. CHEMISTRY & RADIATION Molar Concentration, Molar Mass, Molar Flow Rate, Radiation, Radioactivity and Exposure. PREMIUM Premium is an optional auto-renewing annual subscription. It removes banner ads, gives you more screen space, and unlocks interactive Home Screen widgets and Siri conversions. Payment is charged to your Apple Account when you confirm the purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. The price is shown before you confirm. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/convert-units-plus/privacy.html

Screenshots

Units Plus Converter4 screens
Conversion Calculator Plus4 screens

Verdict

The call

The clearest difference is price: Conversion Calculator Plus at Free against Units Plus Converter's $19.99. Conversion Calculator Plus also leads on update cadence (every 2 days vs every 5 weeks). Units Plus Converter's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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

Conversion Calculator Plus is free to download; Units Plus Converter costs $19.99 up front. Conversion Calculator Plus sells 1 in-app purchase, starting at $9.99 per year. Units Plus Converter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Units Plus Converter against 4.7 for Conversion Calculator Plus. Both are backed by a comparable volume of ratings — 8.4K and 15K respectively. Written reviews are what separate them: 90% of Units Plus Converter's written reviews are positive against 70% of Conversion Calculator Plus's.

UpkeepUpdate frequency

Units Plus Converter ships an update every 5 weeks, Conversion Calculator Plus every 2 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

Scorecard7 real differences · 3 level
Units Plus Converter versus Conversion Calculator Plus: the parameters behind the verdict, then further details
ParameterUnits Plus ConverterConversion Calculator Plus
Price$19.99Free — better
Rating4.9 (8.4K ratings) — better4.7 (15K ratings)
Positive reviews90.5% of reviews — better69.5% of reviews
Number of ratings8.4K15K — better
Update frequencyEvery 5 weeksEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better17.0
Further details — not scored
Size7 MB59 MB
Age rating4+4+
DeveloperAlan MrvicaAdysseus

Customer experience

Units Plus Converter

All ratings8,415 ratings
Positive97.7%
Neutral1.4%
Negative1.0%
Written reviews346 reviews
Positive90.5%
Neutral2.9%
Negative6.6%

Conversion Calculator Plus

All ratings15,343 ratings
Positive94.6%
Neutral2.8%
Negative2.6%
Written reviews200 reviews
Positive69.5%
Neutral4.5%
Negative26.0%

User reviews

Units Plus Converter

From 8.4K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Convenient and reliable
  • 💰 Worth the purchase
  • 🌍 Helpful for travel and international use
  • 📊 Comprehensive range of conversions

Room to improve

  • 🐛 Occasional crashes or bugs
  • 🔢 Limited unit options in some categories
  • 🔍 Unintuitive interface for certain conversions
  • 💰 Overpriced for the features offered

Conversion Calculator Plus

From 15K App Store ratings

What we love

  • 🚀 Great app
  • 👍 Easy to use
  • 🚀 Comprehensive conversions
  • 👍 Intuitive interface
  • 🚀 Useful tool

Room to improve

  • 🐛 Consent required for tracking
  • 🐛 Update problems
  • 🐛 Currency not updating
  • 🔒 Forced to allow tracking
  • 🔒 Forced to subscribe or view ads

Bugs and requests

Units Plus Converter

Reported bugs

3 issues
  • Decimal input not working
  • Currency conversion not updating properly
  • App crashing on certain devices

Requested features

5 requests
  • Add feet and inches conversion option
  • Include kilojoules to calories conversion
  • Improve currency conversion accuracy
  • Add time zone conversion feature
  • Provide more advanced unit options (e.g. torque, density)

Conversion Calculator Plus

Reported bugs

3 issues
  • Currency conversion not working
  • App gets stuck on consent page
  • Unable to get past ads/subscription page

Requested features

3 requests
  • Add running pace conversions
  • Add shoe size converter
  • Provide paid ad-free version

In-app purchases

None

Units Plus Converter

No in-app purchases

1 purchases

Conversion Calculator Plus

Subscriptions1
  • No Ads For One Year1 Year trial$9.991 Year

Questions

Is Units Plus Converter free?
Units Plus Converter costs $19.99, with no in-app purchases.
Is Conversion Calculator Plus free?
Conversion Calculator Plus is free to download, with in-app purchases available.
Which has better reviews, Units Plus Converter or Conversion Calculator Plus?
Units Plus Converter is rated higher. Units Plus Converter averages 4.9 out of 5 from 8.4K ratings, while Conversion Calculator Plus averages 4.7 from 15K ratings.
Do Units Plus Converter or Conversion Calculator Plus have ads?
Conversion Calculator Plus shows ads; Units Plus Converter does not.
Which is updated more often, Units Plus Converter or Conversion Calculator Plus?
Units Plus Converter ships an update every 5 weeks, and Conversion Calculator Plus every 2 days. Most recently, Units Plus Converter was updated on November 6, 2026 and Conversion Calculator Plus on November 8, 2026.

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