Comparison

CalConvert vs Plumb BillPay

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

Head to head
About

CalConvert

This app offers a powerful scientific calculator, extensive unit conversion capabilities across dozens of categories, and real-time foreign exchange rates for over 150 currencies. It also includes a world clock and convenient home screen widgets for quick access to its functions.

Highlights
  • Advanced scientific calculator
  • Extensive unit conversions (600+ units)
  • Real-time currency exchange rates (150+ currencies)
  • World Clock functionality
  • Home screen widgets for quick access
  • Calculation history tape
Features
Read full description

Download CalConvert: Pro Calculator, the Currency Metric Unit Converter. This is the #1 app in the App Store with an advanced scientific calculator, unit conversion functionality and currency foreign exchanges rates. Use CalConvert: Pro Calculator to solve complex math equations, figure out cooking volumes, and easily convert your cash with international foreign exchange currency rates. If you need one calculator to do everything, this is it! Versatile, comprehensive and easy to use: - Advanced calculator and scientific/mathematical functions in landscape mode - History tape: All calculations are saved and can be copied, used and shared - 27+ categories and over 600 units to convert, including metric to imperial and many more - Access 150+ currencies with their respective country flag without the internet - World Clock: View the local date & time in cities around the world Powerful tool & intuitive interface: - Shortcut Widget: Access any of CalConvert's main functions (Conversions, Calculator, Currencies) with one tap, from your home screen - Quick Convert Widget: Tap on any of your favorite unit conversions from your Quick Convert Widget on your home screen to go directly to that conversion page! - Equation preview: Current equation is displayed below the result - Easily save frequently used units of measurement and currencies - Searchable categories and units - Sort currency options alphabetically Available categories: Acceleration, Angle, Area, Astronomical, Cooking Volume, Data, Data Transfer, Density, Energy, Flow, Force, Frequency, Fuel, Length, Luminance, Power, Performance, Pressure, Radiation, Speed, Temperature, Time, Torque, Typography, Viscosity, Volume, Weight, Currencies, World Clock Available currencies: Bitcoin, Euro, US Dollar, Canadian Dollar, Chinese Yuan, British Pound, Japanese Yen, Australian Dollar, Afghan Afghani, Algerian Dinar, Argentine Peso, Albanian Lek, Angolan Kwanza, Armenian Dram, Aruban Florin, Azerbaijani Manat, Bahraini Dinar, Barbadian Dollar, Belize Dollar, Bhutanese Ngultrum, Botswanan Pula, Brunei Dollar, Burundian Franc, Bahamian Dollar and many more. Supports 24 languages: English, Deutsch, Dansk, Français, Nederlands, Magyar, Suomi, Português, Italiano, Español, Русский, Svenska, Slovenčina, Bokmål, Türkçe, Ελληνικ, Polski, Čeština, Română, Hrvatski, Українська, 日本語, 简体中文, 한국의 Thank you for using CalConvert: Pro Calculator, the Currency Metric Unit Converter! Have questions or feedback? Your suggestion could be our next feature! Email support: contact@maplemedia.io Website: http://www.maplemedia.io/

About

Plumb BillPay

Easily approve bills, track payment status, and communicate with your financial advisors. This app offers a secure and intuitive way to manage your finances on the go, providing quick access to all bill information and reports.

Highlights
  • Bill approval workflow
  • Payment status tracking
  • Bill information access
  • Expense detail viewing
  • Communication with advisors
  • Bill upload options
Features
Read full description

Plumb's bill pay app is designed for our clients and their advisors to make approving bills, viewing bill payment status, and communicating with the Plumb team more accessible and easier than ever. Our intuitive and incredibly useful app is the logical evolution of our high-touch, high-tech client service. We utilize bank-level security and conduct consistent audits to ensure your financial privacy and security, and we - and all clients using the app - benefit from the rigid security practices of our industry-leading vendors, such as Apple, Google, and AWS. Whether you want to use it for personal use or give permission to a trusted advisor, we provide a seamless and secure bill pay experience. Features include: * An easy-to-navigate dashboard of bills paid, bills pending approval, and total cash outflow. * Seamless and efficient bill approval process. * Intuitive bill upload options. * Quick access to bill information, expense details, relevant attachments, and bill pay reports. * Easy communication with the Plumb Client Relationship Managers. If you have any questions or would like to learn more about Plumb's services, please visit our website at plumbbillpay.com.

Screenshots

CalConvert4 screens
Plumb BillPay4 screens

Verdict

The call

The clearest difference is price: Plumb BillPay at Free against CalConvert's $24.99. Plumb BillPay also leads on rating (5.0 vs 4.6). CalConvert's advantage is ratings volume (299 vs 3). On update cadence, ads, in-app purchases 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

Plumb BillPay is free to download; CalConvert costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Plumb BillPay holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: CalConvert has 299 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

CalConvert ships an update every 5 weeks, Plumb BillPay every 4 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
CalConvert versus Plumb BillPay: the parameters behind the verdict, then further details
ParameterCalConvertPlumb BillPay
Price$24.99Free — better
Rating4.6 (299 ratings)5.0 (3 ratings) — better
Positive reviews75.8% of reviews—
Number of ratings299 — better3
Update frequencyEvery 5 weeksEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size267 MB42 MB
Age rating17+4+
DeveloperMaple Media Apps, LLCThink Plumb, LLC

Customer experience

CalConvert

All ratings299 ratings
Positive91.3%
Neutral3.3%
Negative5.4%
Written reviews530 reviews
Positive75.8%
Neutral7.0%
Negative17.2%

Plumb BillPay

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

CalConvert

Reported bugs

3 issues
  • Screen layout issues in iPad portrait mode
  • Inconsistent behavior when switching between portrait and landscape
  • Paid version lacks Retina display support

Requested features

5 requests
  • Add widget support for quick calculations
  • Implement fraction and tip calculator features
  • Expand scientific functions for Apple Watch
  • Improve memory management and performance
  • Add customization options like dark mode

Plumb BillPay

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

CalConvert

No in-app purchases

None

Plumb BillPay

No in-app purchases

Questions

Is CalConvert free?
CalConvert costs $24.99, with no in-app purchases.
Is Plumb BillPay free?
Plumb BillPay is free to download, with no in-app purchases.
Which has better reviews, CalConvert or Plumb BillPay?
Plumb BillPay is rated higher. CalConvert averages 4.6 out of 5 from 299 ratings, while Plumb BillPay averages 5.0 from 3 ratings.
Do CalConvert or Plumb BillPay have ads?
Neither CalConvert nor Plumb BillPay shows ads.
Which is updated more often, CalConvert or Plumb BillPay?
CalConvert ships an update every 5 weeks, and Plumb BillPay every 4 weeks. Most recently, CalConvert was updated on November 1, 2026 and Plumb BillPay on October 30, 2026.

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