The best hp calculator 12c apps on iPhone average 4.0β across 248+ titles β we've ranked them by what real users actually keep on their phones. Updated October 2026.
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
π Lightning-fast calculator
π Authentic look and feel of HP 15C
π Faster than real HP 15C
π Excellent RPN emulation
π Familiar interface for HP 15C users
π Great representation of original calculator
π Obvious labor of love by developer
Room to Improve
π Doesn't save settings, programs, or memory
π No key press feedback or sound
π Blinking display issue with large calculations
This app offers a powerful RPN calculator with financial and scientific functions, mimicking popular industry-standard models. It includes programming capabilities and expandable flavors for diverse calculation needs.
This app emulates the legendary HP 12c financial calculator with a redesigned interface and modern look. It preserves the precision and reliability trusted by professionals, offering built-in financial tools for business, banking, real estate, and education.
What We Love
π Modern Convenience of a Classic
π Made me Money
π Perfect
π Greatest of all times!
π Just like my handheld
π Emulator
π Finally works like my old dinosaur
π An Excellent Must Have
π Great App, It Makes Me Feel Fancy
π The Top Calculator Out There
π Best Update of Best Financial Calculator
π HP 12c App
π retired
π Very good
π n/a
π Oldie but goodie
π Head bottle washer
π HP12C owner
π HP Calculators
π Just like my old friend
π Better than ever β better even than the original HP calculator
π My one and only
π Great work!!
π HP 12c
π Great
Room to Improve
π Don't fix what's not broken
π In decline
π Step backward
π It used to work, but now it doesn't
π Major step backwards in design
π Major gap backwards in design
π Ruined app, now even worse, 10 negative stars!
π Retrograde upgrade - avoid.
π Retrograde update has spoiled the app completely
π Layout
π Don't care for recent upgrade.
π Keying is inconsistent
π Buttons don't respond well
π Terrible Update
π Awful Update - Destroyed for iPad
π Changed screen layout
π New Version Fails in Every WY compared with the previous version
