Best Hp Calculator Apps

247+ iOS apps curated and reviewed

4.4 avg rating
16 free apps
Updated September 2026

Looking for free hp calculator apps? 16 of our 247+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Hp Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1iHP48iHP48Free4.7★ (270)NoNoAug 2026
2Retro 15CRetro 15CFree4.3★ (212)NoNoSep 2026
3i48i48Free3.5★ (196)NoNoAug 2026
4Free42Free42Free4.8★ (283)NoNoSep 2026
5Touch RPN calcTouch RPN calcFree3.4★ (208)YesYesSep 2026
6HP 12c Financial CalculatorHP 12c Financial Calculator$14.994.3★ (325)NoNoSep 2026
7HP 15c CalculatorHP 15c Calculator$14.994.8★ (207)NoNoSep 2026
8R47 RPN CalculatorR47 RPN CalculatorFree5.0★ (23)NoYesSep 2026

Top Picks for Hp Calculator

iHP48#1

iHP48 by Alexis Lorca

The classic HP48 improved
Editor's Choice
📊 Productivity
4.7😊(270 ratings)
Free
iHP48 screenshot 1
iHP48 screenshot 2
iHP48 screenshot 3
iHP48 screenshot 4
iHP48 screenshot 5

This app brings the powerful HP48 calculator experience to your mobile device. It offers enhanced performance, seamless file management, and a customizable interface with support for various HP calculator models. Enjoy a familiar and convenient calculator solution without needing extra hardware.

What We Love

  • 🚀 Excellent emulation of HP48
  • 👍 Familiar and nostalgic feel
  • 👍 Comprehensive functionality
  • 👍 Customizable skins
  • 👍 Haptic feedback
  • 👍 Stable and reliable

Room to Improve

  • 🐛 Occasional crashes or freezes
  • 🐛 Missed keystrokes when typing quickly
  • 🐛 Blank or flickering display
  • 🐛 Compatibility issues with newer iOS versions
4.3😊(212 ratings)
Free
Retro 15C screenshot 1
Retro 15C screenshot 2

This app emulates a classic RPN scientific calculator, offering advanced features like complex number arithmetic, matrix calculations, and programmability. It provides a functional and complex tool reminiscent of 1980s calculators.

What We Love

  • 🚀 Lightning-fast calculator
  • 👍 Authentic look and feel of HP 15C
  • 🚀 Faster than real HP 15C
  • 👍 Excellent RPN emulation
  • 👍 Familiar interface for HP 15C users
  • 👍 Great representation of original calculator
  • 👍 Obvious labor of love by developer

Room to Improve

  • 🐛 Doesn't save settings, programs, or memory
  • 🐛 No key press feedback or sound
  • 🐛 Blinking display issue with large calculations
  • 🐛 Bugs with HMS conversions
  • 🐛 Can't close app on newer iPhones
3.5😐(196 ratings)
Free
i48 screenshot 1

This application emulates the HP48GX calculator on your iPhone or iPod touch. It allows you to perform complex calculations like matrix operations and function integration on the go.

What We Love

  • 👍 Realistic HP48 emulation
  • 🚀 Great functionality and features
  • 💡 Useful unit conversions
  • 👍 Familiar interface for HP48 users

Room to Improve

  • 🐛 Freezes and crashes
  • 🐛 Unresponsive buttons and input issues
  • 🐛 Compatibility issues with newer iOS versions
  • 🔋 Performance and battery drain problems

More Hp Calculator apps to explore

FAQ about Hp Calculator

What are the best hp calculator apps for iPhone?
iHP48 tops our hp calculator apps ranking as of September 2026, with a 4.7-star average from 270 App Store ratings, and it's free to download.
Yes — 16 of the top hp calculator apps we rank are free to download, including iHP48 and Retro 15C.
iHP48 has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 247+ hp calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
iHP48 is a mobile application that revives the classic HP48 calculator experience. It provides enhanced performance and convenience, allowing users to access powerful calculator functions directly on their device without needing a physical calculator.
Key features include support for multiple HP calculator models (HP38, HP39, HP48, HP49, HP50), enhanced user experience with haptic feedback and zoom options, seamless file management for transferring and accessing calculator objects, and access to a comprehensive library of calculator packages and ROMs.

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