Comparison

Units+ 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+

Easily convert between over 260 measurement units across 22 categories and get real-time currency exchange rates for more than 160 currencies. Quickly find units or bookmark frequent conversions for efficient use.

Highlights
  • 260+ measurement units
  • 22 unit categories
  • 160+ currencies
  • Real-time exchange rates
  • Unit search
  • Bookmarking conversions
Features
Read full description

Convert values between commonly used measurement units. The app supports more than 260 units in 22 different categories. It also support currency exchange rates for more than 160 currencies. The app makes it easy to search for units within a specific category, or across all categories. And supports bookmarking the conversions you use most often. Here is a sorted list of all included unit categories: - Acceleration - Angle - Area - Data Storage - Data Transfer - Density - Electric Current - Energy - Flow - Force - Fuel Consumption - Length - Mass (Weight) - Mass Flow - Metric Prefix - Power - Pressure - Speed (Velocity) - Temperature - Time - Torque - Volume

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+4 screens
Conversion Calculator Plus4 screens

Verdict

The call

The clearest difference is update cadence: Conversion Calculator Plus at every 2 days against Units+'s every 5 months. Conversion Calculator Plus also leads on ratings volume (15K vs 375). Units+'s advantage is review sentiment (85% vs 70%) and iOS requirement (15.5 vs 17.0). On price, rating, ads and in-app purchases 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. Units+ sells 2 one-off in-app purchases and Conversion Calculator Plus sells 1 in-app purchase, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Units+ against 4.7 for Conversion Calculator Plus. That said, the two scores are not equally well evidenced: Conversion Calculator Plus has 15K ratings behind it against 375, so its average is the more settled of the two. Written reviews are what separate them: 85% of Units+'s written reviews are positive against 70% of Conversion Calculator Plus's.

UpkeepUpdate frequency

Units+ ships an update every 5 months, Conversion Calculator Plus every 2 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Units+ versus Conversion Calculator Plus: the parameters behind the verdict, then further details
ParameterUnits+Conversion Calculator Plus
PriceFreeFree
Rating4.7 (375 ratings) — better4.7 (15K ratings)
Positive reviews85.0% of reviews — better69.7% of reviews
Number of ratings37515K — better
Update frequencyEvery 5 monthsEvery 2 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better17.0
Further details — not scored
Size4 MB59 MB
Age rating4+4+
DeveloperHebaallah HossameldienAdysseus

Customer experience

Units+

All ratings375 ratings
Positive94.1%
Neutral4.3%
Negative1.6%
Written reviews20 reviews
Positive85.0%
Neutral0.0%
Negative15.0%

Conversion Calculator Plus

All ratings15,343 ratings
Positive94.6%
Neutral2.8%
Negative2.6%
Written reviews198 reviews
Positive69.7%
Neutral4.5%
Negative25.8%

User reviews

Units+

From 375 App Store ratings

What we love

  • 👍 Easy to use
  • 👍 Reliable tool
  • 👍 Versatile converter
  • 👍 Great for various conversions (mass, temps, currency, distances)
  • 👍 Does what it needs to do

Room to improve

  • 😠 Too many ads
  • 😠 Ads without an X to close
  • 😠 Negative sentiment towards the app's creator/provider (implied by one review)
  • 😐 Fuel economy display issues (mpg/liters to 100)
  • 😐 Some discrepancy in currency accuracy noted

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+

Reported bugs

1 issue
  • Ads don't have an X to close

Requested features

2 requests
  • Add a Notification Center widget
  • Way to mark favorite types of conversions

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

2 purchases

Units+

One-time2
  • Unlock Pro FeaturesFree
  • Remove Ads$1.99
1 purchases

Conversion Calculator Plus

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

Questions

Is Units+ free?
Units+ is free to download, with in-app purchases available.
Is Conversion Calculator Plus free?
Conversion Calculator Plus is free to download, with in-app purchases available.
Which has better reviews, Units+ or Conversion Calculator Plus?
Units+ is rated higher. Units+ averages 4.7 out of 5 from 375 ratings, while Conversion Calculator Plus averages 4.7 from 15K ratings.
Do Units+ or Conversion Calculator Plus have ads?
Both Units+ and Conversion Calculator Plus show ads.
Which is updated more often, Units+ or Conversion Calculator Plus?
Units+ ships an update every 5 months, and Conversion Calculator Plus every 2 days. Most recently, Units+ was updated on November 1, 2026 and Conversion Calculator Plus on November 3, 2026.

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