Best Calcustom alternatives: apps like Calcustom

10+ similar apps compared and reviewed

4.6 avg rating
10 free apps
Updated November 2026

Whether you want more options like Calcustom or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Calcustom

Calculi: Scientific Calculator#1

Calculi: Scientific Calculator by Michael Natole, Jr.

Unit & Currency Conversion
Editor's Choice
πŸ”§ Utilities
4.4😐(383 ratings)
FreeIn-App Purchases
Calculi: Scientific Calculator screenshot 1
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Calculi: Scientific Calculator screenshot 6

A smart and powerful calculator designed for ease of use, offering advanced scientific functions, unit and currency conversion, and a supercharged history tape. It adapts to various devices and supports external keyboards for enhanced functionality.

What We Love

  • πŸ‘ Better than stock iPhone calculator
  • πŸ“ˆ History screen with past answers/expressions
  • πŸ”„ Regular helpful updates
  • ⌨️ Works with keyboard
  • πŸ—‚οΈ Works in Split Screen
  • 🚫 No ads (historically)
  • ℹ️ Data not linked to identity
  • πŸ“ Shareable history
  • 🎨 Great UI design
  • πŸ’¨ Lightweight, no bloatware
  • πŸ–ΌοΈ History tape with distinct bubbles

Room to Improve

  • ⚠️ Pop-up rating requests
  • πŸ’Έ Added ads in updates
  • πŸŽ›οΈ Clutter of unused keys on iPad
  • πŸ› Buggy history feature
  • πŸ’₯ Crashes during multiplication
  • ⌨️ Physical iPad keyboard not working
  • πŸ‡¨πŸ‡³ Chinese review: trash
  • 🚫 Doesn't work on older iOS versions
  • ❌ Calculation errors (e.g., 9x9)
  • νŠ•νŠ• Closes immediately on iPad iOS 13
  • 🚫 Doesn't work in Slide Over (historically)
Calculator Smart#2

Calculator Smart by Miroslav Otsedarski

Scientific & Standard Calc
Strong Contender
πŸ”§ Utilities
4.7(498 ratings)
FreeAdsIn-App Purchases
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Calculator Smart screenshot 6

This app offers a powerful and precise calculator for everyday math and advanced scientific computations. It features a clean interface with large buttons, supporting complex equations, multiple modes, and intuitive input methods. Personalize your experience with colorful skins and custom icons.

Omega Calculator#3

Omega Calculator by Joseph Rupertus

Basic & Scientific Calculator
Worth Considering
πŸ”§ Utilities
4.7(44 ratings)
FreeIn-App Purchases
Omega Calculator screenshot 1
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Omega Calculator screenshot 5
Omega Calculator screenshot 6

A beautiful and intuitive calculator app for iPhone and iPad, offering both basic arithmetic and advanced scientific functions. It features a smooth, fluid interface with large, colorful buttons and high-quality mathematical typesetting. Results are saved to a history tape and synced across devices, with customizable themes available.

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4
The Simple Calculator - Solve!
The Simple Calculator - Solve!
The Simple Calculator - Solve!
Calculate math with ease.
Free

This app offers a straightforward way to perform everyday calculations, including basic arithmetic, roots, percentages, and geometric formulas for common shapes. It supports fractions and offers convenient features like dark mode and copy-paste functionality.

Basic arithmetic operationsRoots and percentagesGeometric calculations for shapes
πŸ”§ Utilities
(189)
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5
CalculatorΒ· - Easy to Use
CalculatorΒ· - Easy to Use
CalculatorΒ· - Easy to Use
by Netviking AB
Free

A straightforward calculator app designed for simplicity and ease of use. It features large buttons and a clear display, supporting basic arithmetic operations like addition, subtraction, multiplication, and division.

Large buttonsClear displayAddition
πŸ”§ Utilities
(220)
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6
jCalc – Scientific Calculator
jCalc – Scientific Calculator
jCalc – Scientific Calculator
History, Fractions, Functions
Free

This app is a powerful yet easy-to-use scientific calculator designed for students, teachers, and professionals. It simplifies complex calculations involving fractions, decimals, and advanced equations with flexible answer formats and smart conversions.

Fractions and decimals calculationsFlexible answer formatsSmart conversions
πŸ”§ Utilities
(259)
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7
Big Button Calculator Pro Lite
Big Button Calculator Pro Lite
Big Button Calculator Pro Lite
Easy Basic Calculator
Free

A user-friendly calculator app featuring large buttons and customizable colorful backgrounds. It offers a dual-line display, multi-line input for complex equations, and convenient gesture controls for editing and copying.

Large buttonsDual-line display18 color themes
πŸ”§ Utilities
(14K)
ad-supported
8
Calculator HD Pro Lite
Calculator HD Pro Lite
Calculator HD Pro Lite
Basic & Scientific Calc
Free

This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.

Dual-line displayCalculation historyFull scientific functions
πŸ”§ Utilities
(52K)
ad-supported
9
Calculator for iPhone and iPad
Calculator for iPhone and iPad
Calculator for iPhone and iPad
You can count on it
Free

A straightforward and intuitive calculator app designed for ease of use. It offers a history bar, customizable themes, and advanced mathematical functions, ensuring a pleasant and efficient calculation experience on your device.

Basic arithmetic operationsAdvanced scientific functionsHistory bar for past calculations
πŸ”§ Utilities
(18K)
free with in-app purchases
10
Haseba Calculator
Haseba Calculator
Haseba Calculator
Basic, Scientific, Easy to Use
Free

This app offers a user-friendly calculator with both basic and scientific functions. It features a clean interface, voice input, and convenient history tracking. Advanced options include memory slots for storing values and applying operations to them.

Scientific calculatorVoice calculatorCalculation history
πŸ”§ Utilities
(3.8K)
free with in-app purchases