Comparison

Conversion Calculator Plus vs DiERP

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

Head to head
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
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• 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 ). • 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 ----------------------------------------- ALL CONVERSION CATEGORIES COMMON CATEGORIES Pace, Temperature, Data, Currency, Length, Time, Speed, Area, Volume, Pressure, Power, Fuel Economy and Weight. Currency includes world currencies, cryptocurrencies and precious metals. Currency+ lets you compare multiple currencies in one list. 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

About

DiERP

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Welcome to DiERP, your all-in-one solution for streamlined Human Resource Management. Whether you're a small business or a large enterprise, our app is designed to simplify HR processes, enhance employee engagement, and optimize workforce management.

Screenshots

Conversion Calculator Plus4 screens
DiERP4 screens

Verdict

The call

The clearest difference is in-app purchases: DiERP at none against Conversion Calculator Plus's 1. DiERP also leads on ads (none vs shown) and iOS requirement (15 vs 17.0). On price, update cadence 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. Conversion Calculator Plus sells 1 in-app purchase, starting at $9.99 per year. DiERP asks for nothing beyond the download.

UpkeepUpdate frequency

Conversion Calculator Plus ships an update every 6 days, DiERP weekly. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Conversion Calculator Plus versus DiERP: the parameters behind the verdict, then further details
ParameterConversion Calculator PlusDiERP
PriceFreeFree
Rating4.7 (15K ratings) — better—
Positive reviews69.4% of reviews—
Number of ratings15K — better—
Update frequencyEvery 6 days — betterWeekly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015 — better
Further details — not scored
Size58 MB103 MB
Age rating+44+
DeveloperAdysseus103 NPT DIGITAL TECHNOLOGY PLC.

Bugs and requests

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

DiERP

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Conversion Calculator Plus

Subscriptions1
  • No Ads For One Year1 Year trial$9.991 Year
None

DiERP

No in-app purchases

Questions

Is Conversion Calculator Plus free?
Conversion Calculator Plus is free to download, with in-app purchases available.
Is DiERP free?
DiERP is free to download, with no in-app purchases.
Do Conversion Calculator Plus or DiERP have ads?
Conversion Calculator Plus shows ads; DiERP does not.
Which is updated more often, Conversion Calculator Plus or DiERP?
Conversion Calculator Plus ships an update every 6 days, and DiERP weekly. Most recently, Conversion Calculator Plus was updated on October 19, 2026 and DiERP on October 11, 2026.

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