Apps like Plus42

Here are some great alternatives to Plus42 by Thomas Okken :
TechCalc+ Calculator
TechCalc+ Calculator
★4.8
TechCalc Scientific Calculator
TechCalc Scientific Calculator
★4.6
Scientific Calculator
Scientific Calculator
★4.5
Scientific Calculator Plus
Scientific Calculator Plus
★4.9
WRPN 16c
WRPN 16c
★4.0
RPN9
RPN9
★4.4
Acron RPN Calculator
Acron RPN Calculator
★4.2
One Scientific Calculator
One Scientific Calculator
★4.4
Soft84
Soft84
★5.0
JRPN 15C
JRPN 15C
★4.6
JRPN 16C
JRPN 16C
★4.7
HP67 Calculator 2.0
HP67 Calculator 2.0
★4.4
RealCalc Scientific Calculator
RealCalc Scientific Calculator
★4.6
Calcularis Scientific Calc
Calcularis Scientific Calc
★3.5
Droid48
Droid48
★4.8
Graphing calculator plus 84 83
Graphing calculator plus 84 83
★4.6