Best Citbi Calc Apps

182+ iOS apps curated and reviewed

4.6 avg rating
12 free apps
Updated June 2026

If you already know ciTBI Calc, this is the deeper bench. 182+ citbi calc apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.

Top Picks for Citbi Calc

Calculator⁼#2

Calculator⁼ by Impala Studios

Fraction, Scientific Calc +
Strong Contender
🔧 Utilities
4.6😞(357K ratings)
FreeAdsIn-App Purchases
Calculator⁼ screenshot 1
Calculator⁼ screenshot 2
Calculator⁼ screenshot 3
Calculator⁼ screenshot 4
Calculator⁼ screenshot 5

A handy math assistant for solving basic and scientific calculations intuitively and quickly. Become a math master with this free app!

What We Love

  • 👍 Easy to use
  • 📊 Helpful history feature
  • 💻 Versatile (basic and scientific)
  • 🔍 Clear display and large buttons

Room to Improve

  • 🤖 Intrusive and excessive ads
  • 💰 Subscription model for ad-free version
  • 🔄 Ads interrupting calculations
Calculator for iPad₊#3

Calculator for iPad₊ by Impala Studios

Basic, Scientific, Plus Calc
Worth Considering
🔧 Utilities
4.5😞(126K ratings)
FreeAdsIn-App Purchases
Calculator for iPad₊ screenshot 1
Calculator for iPad₊ screenshot 2
Calculator for iPad₊ screenshot 3
Calculator for iPad₊ screenshot 4
Calculator for iPad₊ screenshot 5

A powerful math solver and scientific calculator for iPad and iPhone, featuring advanced functions and quick calculations. Share your results easily and master your business expenses with percentage calculations. Get it now!

What We Love

  • 🚀 Helpful for math calculations
  • 👍 Variety of functions beyond basic calculator
  • 👍 Useful for students and teachers

Room to Improve

  • 🙄 Excessive ads and pop-ups
  • 💰 Expensive subscription to remove ads
  • 🐛 Occasional calculation errors

More Citbi Calc apps to explore

4
10BII Calc HD
10BII Calc HD
10BII Calc HD
by Ernest Brock
$8.99

A versatile business calculator with over 100 functions for finance, math, and stats. Calculate loans, interest, cash flows, and more with ease on both iPhone and iPad. Perfect for business professionals and students alike.

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5
Sci:Pro Calculator
Sci:Pro Calculator
Sci:Pro Calculator
by Jerry Montgomery
Free

A versatile calculator app with Basic, Scientific, and Programmer modes for iPhone, iPad, and iPod Touch. Easily view history and share results via email or copy. Get precise calculations on-the-go!

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6
PCalc Lite
PCalc Lite
PCalc Lite
The Best Calculator
Free

PCalc Lite is the ideal calculator app for scientists, engineers, students, and programmers offering RPN mode, multi-line display, unit conversions, constants, and more. Try it for free on your iPad and upgrade for additional features or themes. Also available on Apple Watch for on-the-go calculations.

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7
10bii Financial Calculator
10bii Financial Calculator
10bii Financial Calculator
Easy Financial Calculator
$7.99

A powerful and versatile financial calculator app with over 105 functions for various financial analysis needs, from loan payments to investment values. Perfect for beginners and professionals alike, offering easy-to-use features, intuitive display, and precise mathematics. Answer common financial questions effortlessly with 12 easy modes and visualize cash flows and statistical data with graphs for quick analysis and decision-making.

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8
BA II Plus™ Financial Calc
BA II Plus™ Financial Calc
BA II Plus™ Financial Calc
by Texas Instruments
$14.99

Experience the power of the most advanced financial calculator for business professionals and students, offering a wide range of finance and science functions such as Time-Value-of-Money calculations, cash-flow analysis, bond pricing, statistics, and more. Features include memory storage, key click sounds, split screen mode, and compatibility with both BA II Plus™ and BA II Plus™ Professional calculator functions. Unlock your financial potential now!

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9
i41CX+
i41CX+
i41CX+
RPN Calc with Printer and CAS
$24.99

"Experience the most powerful RPN scientific calculator for iOS with a rich set of features including a full Computer Algebra System (CAS), access to HP-41 library modules, and extensive customization options. Enhance your scientific, engineering, and financial calculations with a virtual thermal printer, programmable functionality, and iCloud support. Download now for a comprehensive calculator experience."

📊 Productivity
(100)
10
Basic Calculator: Classic Calc
Basic Calculator: Classic Calc
Basic Calculator: Classic Calc
big buttons and wallpapers
Free

A free calculator app with HD graphics and multitasking support. Features general math operations, memory functions, thousands separators, and multilingual UI. Try it for quick and easy calculations on the go!

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11
Rapid & Quick Calculator
Rapid & Quick Calculator
Rapid & Quick Calculator
History Tape, Tax and Discount
Free

A cutting-edge productivity tool that combines task management, team collaboration, and project tracking in one intuitive platform. Stay organized, communicate seamlessly with your team, and streamline your workflow effortlessly. Try it out now for a more efficient and cohesive work experience.

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(1.5K)
12
PCalc
PCalc
PCalc
The Best Calculator
$9.99

A powerful calculator app for scientists, engineers, students, and programmers with features like RPN mode, multi-line display, unit conversions, constants, paper tape, undo/redo, and support for various calculation formats. Also available on Apple Watch for convenient wrist calculations. Try it now!

🔧 Utilities
(758)
13
GraphNCalc83
GraphNCalc83
GraphNCalc83
Graphing calculator
$12.99

The app is a comprehensive graphing calculator that features algebraic entry, math functions, graph plotting, statistics, matrix operations, unit conversion, BASIC programming, chemistry tools, geometry calculations, finance functions, and a built-in user guide for easy reference. It offers a colorful, fast, and fluid experience on iPhone and iPad with advanced features like touch input, high-resolution graph outputs, and fast computation speeds. Explore its diverse functionality to enhance your mathematical tasks.

📚 Education
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14
Paper Calc Office Lite
Paper Calc Office Lite
Paper Calc Office Lite
Calculator with Print/Email
Free

This calculator app is designed for office use, offering a large key layout and a paper tape feature to review calculations, add comments, and email or print the results. With customizable keyboards and adjustable display sizes, it's a user-friendly tool for everyday math tasks, and users can upgrade to a full version for additional features.

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15
Scientific Calculator fx-991
Scientific Calculator fx-991
Scientific Calculator fx-991
Step-by-step Math Solver
Free

Enhance your math skills with the ultimate scientific calculator app designed for students and professionals. From step-by-step solutions to instant access to key formulas, HiEdu Calculator simplifies complex calculations and provides a vast library of functions. Perfect for standardized test preparation or everyday classwork - transform your educational journey today!

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(344)
16
10bii+ Financial Calculator
10bii+ Financial Calculator
10bii+ Financial Calculator
Easy, Fast & Accurate
$5.99

A powerful financial calculator app with easy and fast features for all your financial calculations. Download now to simplify your financial planning and decision-making.

💰 Finance
(36)
17
Interest Calculator: Finance
Interest Calculator: Finance
Interest Calculator: Finance
Compound & Savings Calc
Free

This finance tool helps users calculate and understand various types of interest on investments and savings, offering a range of features to manage fixed deposits, certificates of deposit, and other investments. With its user-friendly interface, it enables users to make informed financial decisions and take control of their financial future.

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18
Calc: Multiline calculator
Calc: Multiline calculator
Calc: Multiline calculator
Quick calculator
Free

This is a quick and easy-to-use calculator app that allows you to perform complex calculations instantly, without the need to press equals buttons or navigate multiple steps. With a clean and minimalist design, it's perfect for everyday calculations, homework, and office tasks, and is available for free download.

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19
MathU RPN Calc
MathU RPN Calc
MathU RPN Calc
Advanced scientific calculator
$24.99

This advanced scientific and financial calculator is designed for professionals, offering over 96 functions, including mortgage amortization and cash flow computations, and supports various number bases and programming features. With high precision accuracy and fast computations, it provides a comprehensive tool for daily calculations, available on iPhone and iPad devices.

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(87)
20
Acute Calculator
Acute Calculator
Acute Calculator
Advanced Graphing Calculator
Free

Discover a powerful advanced graphing calculator with an easy-to-use visual editor, supporting 30 functions. Utilize an intuitive palette system, history tape, and variable storage without any ads or subscriptions. Explore further at [app website].

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