⭐️4.7 / 5
Rating
🙌21
Ratings
📼1 vid & 10 scs
Content
📦~ in 2 months
Updates frequency
🗣❌ unsupported
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All Versions of GO

5.0

May 15, 2024

- New Settings option, Auxiliary View Assist, enables draggable buttons for quickly opening / closing the stack window. - New Settings collection, Accessibility, groups High Visibility Display, Magnify Calculator and Auxiliary View Assist. - The Settings option Auto-On now defaults to YES. - Remove vestigial iOS 9 Settings option that assisted in migration from iCloud Documents to iCloud Drive for program storage. - Battery power level reporting has changed in iOS, iPadOS and macOS: adjust power level monitoring algorithm to compensate. - Bug fixes, miscellaneous improvements and internal modernization. - Refresh documentation. - Update for iOS 17.5, iPadOS 17.5. tvOS 17.5, macOS 14.5.
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4.6.3

March 9, 2024

- Fixed: problem with program entry. - Miscellaneous improvements recommended for everyone. - Update for iOS 17.4, iPadOS 17.4.
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4.6.2

February 19, 2024

- Important bug fix: cannot enter program steps unless program listing is visible.
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4.6

February 18, 2024

- Fix for the hours (or degrees) / minutes / seconds - decimal conversion function. - New Settings option "Magnify Calculator", which creates a zoom-in effect that clips the periphery of the device body. - Modern color picker for devices running iOS 14 or newer. - Miscellaneous other bug fixes. - Update for iOS 17.3.1, iPadOS 17.3.1, tvOS 17.3, macOS 14.3.1.
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4.5

September 14, 2022

- Support iPhone 14; cosmetic improvements for iPhones 5, 6, 7 and 8. - Update for iOS 16, macOS 12.6, tvOS 16.
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4.4

February 25, 2022

- New Settings option Persist Program Registers. When enabled: * On program Export device register values are saved to the program. * On program Import device registers are restored from the program's saved values. - New external keyboard action: typing M invokes the multiply function, eliminating a shift. - Nerd alert: iOS versions >= 14 and macOS versions >= 11 now use the modern PHPicker photo chooser rather than the venerable UIImagePicker. - Minor bug fixes and improvements. - Update for iOS 15.3.1, macOS 12.2.1, tvOS 15.3.
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4.3

December 20, 2020

- A blinking decimal point indicates battery power less than 5% (except Apple TV). - New macOS Universal binary that runs on either Apple Silicon or Intel Macs. - Update for iOS 14.3, macOS 11.1, tvOS 14.2.
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4.2.1

October 14, 2020

- Support iPhone 12, update for iOS 14.0.1.

4.2

October 4, 2020

- Experimental decimal math for the +, -, M+ and M- keys. - Update for macOS 10.15.7.
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4.1

September 13, 2020

- GO-25 SciRPN for Apple TV is now part of the universal purchase bundle. - New background theme OS Appearance that tracks the OS's Appearance setting. - 0^0 produces Error rather than evaluating to 1. - Update for iOS 13.7, macOS 10.15.6, tvOS 13.4.8.
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Price History of GO

Description of GO

GO-25 SciRPN simulates the venerable HP-25C Programmable Scientific Calculator from 1976. Virtually indistinguishable from the real item in operation, GO-25 is a powerful yet simple retro calculator. • RPN (Reverse Polish Notation) • 10-digit LED calculator display, 10-99 to 10+99 • Four stack registers with roll down • Ten storage registers with arithmetic memory operators • Math, trigonometric, polar/rectangular, sexagesimal/decimal, logarithmic, statistical, power and other miscellaneous functions • Programmable, with annotated program listing, and memory for 99 program steps • Library of Sample Programs • Fast, slow or single step program execution • Program import via pasteboard or from other Apps • Program export via printer, email, pasteboard or to others Apps • iTunes program File Sharing • Two additional windows with views of: ◦ stack/storage registers ◦ keystroke log ◦ program source code ◦ program documentation • Copy-from and Paste-to the calculator display • Simple Paper Tape annotations
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GO: FAQ

Is there an iPad version available for GO?

Yes, GO works on iPads.
The GO app was created by Stephen Lidie.
GO currently supports iOS 12.0 or later.
The rating of 4.7 out of 5 that GO has received from users is outstanding.
The Go App Relates To The Utilities Genre.
5.0 is the latest released GO version.
July 1, 2024 is the date of the latest GO update.
GO was introduced to the market on February 6, 2023.
Contains nothing objectionable, appropriate for all ages.
GO can be used in English.
Sorry, GO is not on Apple Arcade.
Sorry, in-app purchases are not available for users of GO.
Sorry, GO is not specifically engineered for compatibility with Apple Vision Pro.

Video & Screenshots of GO

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Reviews of GO

  • Great app!

    This is a wonderful app. Completely replicates the HP 25 RPN scientific calculator with full fidelity.
  • Slow button response resolved

    Deleted app and reinstalled on my iPhone 6s. Working well now. btw very happy to have the calculator I used in college on my phone!

    Developer Response

    Good to hear all is well. I am unable to see the problem on a virtual iPhone 6s, nor on an actual, still working, iPhone 5. Please send email to support if the problem arises again.
  • Old HP-25 user

    I’m very impressed with this program. With the latest update I’m starting to like this app as much as the original calculator. If only the keyboard was the same...