Best apps like BRISTOL - Calculator

10+ similar apps compared and reviewed

4.6 avg rating
8 free apps
Updated September 2026

BRISTOL is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to BRISTOL

Calc Pro - Simple and Useful#1

Calc Pro - Simple and Useful by Keita Nonaka

This is a powerful calculator
Editor's Choice
๐Ÿ”ง Utilities
4.8(5 ratings)
FreeAds
Calc Pro - Simple and Useful screenshot 1
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Calc Pro - Simple and Useful screenshot 3
Calc Pro - Simple and Useful screenshot 4
Calc Pro - Simple and Useful screenshot 5
Calc Pro - Simple and Useful screenshot 6

This powerful calculator handles complex equations and huge numbers with up to 15 digits of precision. It saves your calculation history, allowing you to reuse previous equations and answers. Access scientific functions like square root and logarithms easily with a swipe.

PROG_CALC#2

PROG_CALC by ๅ˜‰ๆฌฃ ่ƒก

programmable calculator
Strong Contender
๐Ÿ”ง Utilities
5.0(1 ratings)
Free
PROG_CALC screenshot 1
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PROG_CALC screenshot 5

This app offers a programmable calculator with two distinct modes for daily computing and advanced mathematical functions. It supports system conversions between binary, octal, decimal, and hexadecimal, and allows for variable storage and code sharing.

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Aritio โ€” Beautiful Calculator
Aritio โ€” Beautiful Calculator
Aritio โ€” Beautiful Calculator
Scientific mode and history
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A straightforward calculator designed for iPhone and iPad, offering customization with color schemes and light/dark modes. It supports advanced mathematical operations for everyday use.

Universal app for iPhone and iPadCustomizable color schemesLight and dark mode support
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TechniCalc Calculator
TechniCalc Calculator
TechniCalc Calculator
Scientific & Engineering
$7.99

This app offers a modern, intuitive interface for complex calculations, supporting scientific, engineering, and advanced mathematical functions. It allows natural equation entry, provides a formula book, and includes unit and currency converters. Available across Apple devices, it caters to students and professionals needing a powerful calculation tool.

Natural equation entryAdvanced math engineFormula book and equations
๐Ÿ”ง Utilities
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8
BigInt Calculator
BigInt Calculator
BigInt Calculator
Fast multi-threaded calculator
Free
$0.99 | 100% OFF

This app offers a fast, multi-threaded calculator with a spreadsheet-like interface for easy editing and instant updates. It handles large numbers and complex expressions with arbitrary-precision arithmetic, making it suitable for various real-world calculations.

Table-based input with step-by-step editingAutomatic real-time recalculationHandles complex expressions with parentheses and exponents
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9
NLJUG
NLJUG
NLJUG
by Belastingdienst
Free
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10
PDF to EPUB - eBook Converter
PDF to EPUB - eBook Converter
PDF to EPUB - eBook Converter
Create eBook from Any Source
Free

Easily transform PDFs, images, web pages, and text files into beautifully formatted EPUB eBooks. Customize your eBooks with metadata, cover images, and organize them into folders. Share your creations across various reader apps and devices.

Convert PDFs, images, web pages, and text to EPUBAutomatic text extraction and OCRDownload and embed images from web pages
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