禁煙日記（飲酒かも）

Broke out my old HP12C to work out a ‘change date’ problem. It churned but gave me the answer I needed. Out of curiosity, bought the HP12C app then ran the same problem on my iPhone 15. The answer appeared instantaneously. Missing are the calculation steps’ crib notes on the back of the original.

This app works great on larger iPads. But on my mini, the numerals aren't within the result window in portrait mode.

Not good at all, better save your money, and after years of using the original version, they don’t even provide a manual to figure out this piece of junk, ripp off

This calculator always worked perfectly, but recently, it lost the ability to flip into landscape that showed the financial functions.

Can’t use the full functions of the calculator

It is a great and old school HP12C. But it needs a software update to look better! Please HP keep track on it!

The calculator stopped displaying in landscape mode. Does anyone know how to fix this?

Superb software reproduction of the original, outstanding HP 12C pocket calculator! Works well on iPhone 15 Pro Max and iPad Pro 11” with iOS 17.

Love having the app since the real 12c can stay in office. Really surprised that still after 4 years the blue functions on the right hand column is absent!

Waste of money. Gives wrong calculations. Not good for quoting clients finances.