Retro 15C

Super implementation, equal to the original! Note I have not tried programming. Complex numbers an matrixes work as the original

I bought my 15C in 1983 and have used it ever since, both at university and later as an engineer. What a great calculator! With this app I can do calculations with a familiar user interface, always with me. So far I have not found anything, that does not work, as the real thing.

At least for those who are used to the 15C. I have tried several app, but none does the work as simply and nicely. Thank you very much!

Super erstatning for en ekte 15C, selv om størrelsen på IPhone ikke gir samme størrelse på tastene. Bruker denne når jeg ikke har min åttitalls HP-kalkulator for hånden.

I’ve been using this for many years in my work. Love it. Except, this week, the entire screen started to blink. Is there a fix?

If you know, you know…

Near perfection. The only thing I wish they would do is to add haptic feedback on the keyboard. Well done , guys.

Just like the original calculator that I used as I got my PhD in physics. The best by HP.

After a few bumps with the loss of a home button, this is back. Thank goodness!

Good job future-proofing the app!