Best apps like RePNCalc - RPN Calculator Pro

15+ similar apps compared and reviewed

4.6 avg rating
9 free apps
Updated July 2026

RePNCalc is great, but it's not the only option. Explore 15+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to RePNCalc

Calculator ##1

Calculator # by Incpt.Mobis

Scientific Calculator
Editor's Choice
🔧 Utilities
4.6😐(36K ratings)
FreeAdsIn-App Purchases
Calculator # screenshot 1
Calculator # screenshot 2
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Calculator # screenshot 5
Calculator # screenshot 6

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

What We Love

  • 👍 Easy to use
  • 🚀 Powerful functionality
  • 💡 Helpful for math classes
  • ⭐ Great for students

Room to Improve

  • 🔍 Confusing interface after update
  • 📢 Too many intrusive ads
  • 💰 Paywall for advanced features
Calculator +#2

Calculator + by xNeat.com

Scientific Calc Plus Fraction
Strong Contender
🔧 Utilities
4.6😊(9.6K ratings)
FreeAdsIn-App Purchases
Calculator + screenshot 1

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

What We Love

  • 👍 Great features and easy to use
  • 👍 Efficient and quick
  • 👍 Versatile, functional calculator
  • 👍 Fantastic, easy to use app

Room to Improve

  • 🐛 New updated layout is awful
  • 🐛 App is now terrible
  • 🔒 Paying customer screwed over by update
Calculator 17 - Math Solver#3

Calculator 17 - Math Solver by AI APPS S.R.L.

Home Screen Widget
Worth Considering
🔧 Utilities
4.6😞(908 ratings)
Free
Calculator 17 - Math Solver screenshot 1
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Calculator 17 - Math Solver screenshot 5

This app offers a user-friendly calculator with basic and scientific modes. Access calculations instantly via a home screen widget and review past computations in a saved history.

What We Love

  • 👍 Convenient and easy to use
  • 💡 Excellent free app

Room to Improve

  • 🐛 Keyboard not functioning properly
  • 🐛 Widget not working or slow
  • 🐛 Screen sizing issues

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4
Calculator Air: AI Math Solver
Calculator Air: AI Math Solver
Calculator Air: AI Math Solver
Basic, Scientific & Photo Math
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Solve math problems instantly with a powerful AI-driven calculator. Features include basic and scientific calculations, a photo math solver, and an AI homework helper for step-by-step explanations. Ideal for students and professionals needing quick, accurate math solutions.

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Calculator₊
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This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.

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Scientific Calculator Elite
Scientific Calculator Elite
Scientific Calculator Elite
Fraction and Unit Conversion
$4.99

A comprehensive scientific calculator for iOS that mimics the functionality of a physical device. It offers advanced calculations, unit conversions, and fraction support without any advertisements.

Fraction and decimal conversionsUnit conversions with dimensional unitsDegrees/minutes/seconds calculations
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Question - Answer: Homework AI
Question - Answer: Homework AI
Question - Answer: Homework AI
Study Helper Solver Math,Essay
Free

This study companion simplifies homework and boosts understanding across various subjects. Get instant explanations for math problems, writing feedback, and detailed summaries to make learning enjoyable and effective.

AI-powered homework assistanceStep-by-step math problem solvingWriting feedback and grammar checks
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RPNu
RPNu
RPNu
by Scott Johnson
Free
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Calctan
Calctan
Calctan
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Free
$1.99 | 100% OFF

This sophisticated calculator app offers a minimalist design with advanced mathematical functions and extensive personalization options. It seamlessly syncs across devices and includes multitasking features for enhanced productivity.

Intuitive minimalist design100+ customizable themes47 advanced mathematical functions
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Calculator Sharp
Calculator Sharp
Calculator Sharp
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This calculator app offers ultra-high precision with up to 37 digits of accuracy. It supports a wide range of complex mathematical functions, including trigonometric, logarithmic, and integral operations, along with step-by-step calculation display and undo/redo functionality.

Ultra-high precision (37 digits)Supports complex mathematical operationsDisplays calculation steps
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ad-supported