The Best Calculator - Calc Pro

The Best Calculator - Calc Pro

10 Powerful Calculators

4.6K ratings
213 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • August 17, 2011
  • October 22, 2024

Features

The Best Calculator - Calc Pro screenshot #1 for iPhone
The Best Calculator - Calc Pro screenshot #2 for iPhone
The Best Calculator - Calc Pro screenshot #3 for iPhone
The Best Calculator - Calc Pro screenshot #4 for iPhone
The Best Calculator - Calc Pro screenshot #5 for iPhone
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About

This app offers a comprehensive suite of 10 powerful calculators and 10 financial worksheets, designed to handle everything from basic arithmetic to complex scientific and financial calculations. It includes features like unit conversion, currency exchange, graphing, and statistical analysis, making it a versatile tool for students and professionals.

10 powerful calculators (Standard, Scientific, Graphing, etc.)
10 financial worksheets (Mortgage, Loan, Compound Interest, etc.)
Unit Converter with 3000+ conversions
World Currencies Converter
Scientific constants database
Advanced graphing functions
Tape View for equation history
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What users say

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What's New in The Best Calculator

6.10.0

October 22, 2024

minor improvements and support for iOS 18

10

In-App Purchases

$7.99

Calc Pro - Full Version

Includes all 8 calculators and the design pack.

User reviews

Great calculator

TY enjoy. Using it

Currency Exchange

May 12 2026

I keep sending feed back about this but it’s still the same.

It’s so annoying that the app on currency keeps defaulting to

USD
GBP

It should stay on last used or there should be an option to choose my defaults.
I hate the fact that I have to constantly (every time) I use the app select my frequently used currency
Because it keeps defaulting to

USD
GBP

PLEASE FIX IT



I can’t stand the fact that I have to keep selecting the currency I’m trying to convert to every single time.
It never keeps the last used or (short cut it should have for most frequently used).
In short… I have to always scroll to find my most used currency conversions.
I would rate this 5 out of 5 but the annoyance of the currency which I use mostly, is quite frustrating.
THE app is honestly quite amazing. I use the other aspects of it but I mostly use the currency conversion


Update Dec 28 2025
Last used currency conversion still not dealt with on this app. I would rate it higher, but I reviewed this sometime ago and no update has been done on that aspect for frequently used currency conversions. That’s why it gets a two out of five.
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Where Are The Cooking Conversions

I used to use this calculator app for cooking conversions. I think there was even a labeled cooking section under the calculator types. I don't see it anymore.

Currency Exchange

I can’t stand the fact that I have to keep selecting the currency I’m trying to convert to every single time.
It never keeps the last used or (short cut it should have for most frequently used).
In short… I have to always scroll to find my most used currency conversions.
I would rate this 5 out of 5 but the annoyance of the currency which I use mostly, is quite frustrating.
THE app is honestly quite amazing. I use the other aspects of it but I mostly use the currency conversion


Update Dec 28 2025
Last used currency conversion still not dealt with on this app. I would rate it higher, but I reviewed this sometime ago and no update has been done on that aspect for frequently used currency conversions. That’s why it gets a two out of five.
Show more

Great !

Would be nice if there was a monthly add on to compound interest

Developer apps

User experience

🐞

Reported Bugs

4 issues

Crashes on launch

Bug

Ads block access to calculator

Bug

Paid version still shows ads

Bug

Conversion update lags behind real-time

Bug

Requested Features

5 requests

Horizontal layout option

Feature

Ability to edit/reuse calculations from tape

Feature

More unit conversion options

Feature

Standard deviation function in statistics mode

Feature

Dark mode

Feature

FAQ

What does Calc Pro do?

Calc Pro is a mobile application that combines ten powerful calculators and ten financial worksheets. It is designed to handle a wide range of calculations, from basic arithmetic and scientific computations to complex financial analysis, unit conversions, and graphing.

What are the key features of Calc Pro?

Key features include a standard calculator, scientific calculator with RPN mode, graphing calculator, unit converter with over 3000 conversions, world currencies converter, financial calculator with 10 worksheets (e.g., mortgage, loan), and a statistics calculator. It also offers multiple display and calculator modes, customizable skins, and a tape view for equation history.

How much does Calc Pro cost?

The application is available for free with in-app purchases. This model allows users to download and use the basic functionalities without upfront cost, with options to purchase additional features or unlock the full suite of tools.

What devices is Calc Pro compatible with?

The app is designed for iPhone and iPhone Pro devices. It supports multiple languages including English, German, Spanish, Portuguese, French, Italian, Dutch, Japanese, Chinese, Korean, and Russian.

Who would benefit from using Calc Pro?

Calc Pro is beneficial for students who need advanced calculators for their studies, professionals dealing with financial planning or data analysis, and individuals who frequently perform unit conversions or currency exchanges. Its comprehensive feature set makes it suitable for a wide array of users requiring precise calculations.