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By CuVee Software

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Vintage-45 is a complete simulation of Hewlett-Packard's scientific hand-held calculator HP-45 from 1973. Processing times and behavior have been carefully modelled after the original. Even the "secret" stopwatch may be activated.


• Photo-realistic look based on an existing device
• Animated keys with adjustable click sound and visual feedback
• All functions and operations of the HP-45 fully implemented
• Includes "secret" stopwatch
• Full-speed or simulated speed of real calculator
• Correct wrong number entries by swiping left across the display
• Cut/copy/paste display value
• Double-tap display to show stack and all memory registers
• Additional conversions: Celsius vs. Fahrenheit, liters per 100km vs. mpg (US and UK)

Tap the display for some basic hints.

For more information and a short manual visit the homepage:

What's New in Version 1.3

• HP-45 low-battery warning (all decimal points lit) if iPhone's battery drops below 5%
• Supports 64-bit architecture

Bug fixes:
• Calculator didn't turn itself on (iOS 8)
• LastX didn't work if RCL / n produced an error

iPhone Screenshot

iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3

Customer Reviews


Wonderful app! I would love an equally good HP-67 for iPhone. I have it for iPad, but not for my phone.

It would be nice if the volume adjustment stayed set rather than needing to be reset each time the app starts.

View In iTunes
  • $0.99
  • Category: Productivity
  • Updated:
  • Version: 1.3
  • Size: 27.1 MB
  • Languages: English, French, German
  • Seller:

Compatibility: Requires iOS 5.1.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

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