Tydlig – Calculator Reimagined for iPad and iPhone
No RPN. Neckbeard status confirmed.<p>Calculators are still an unsolved problem for me on glass devices to the point  I still religiously carry around an HP50G even though its 6x the size of my phone. Also from some bad experiences, it appears that some "app" calculators are also seriously badly implemented. Even basic trig ops can return stupid values at extremes which makes them untrustworthy. Plus none are reasonably programmable.<p>My use cases are base conversions, simple CAS stuff, basic engineering calculations, unit conversions, financial (TVM etc) and generic math. I also canned a lot of knowledge in RPL programs over the years from fuel calculations to diagnostic tools and dice rollers etc.<p>Please can someone solve all these problems (without doing half arsed HP calc emulation).