When the HP Touchpad was still new and webOS wasn’t completely dead yet, Conny and I created a series of calculator apps for webOS. The Touchpad came without a preloaded calculator app, so we gave a basic calculator away for free with in-app upgrade options for our more specialized creations. The whole thing ran under the name Calculator++ and taught me a lot about floating point errors. A lot.
Over time we put together a scientific
… and a personal finance calculator app.