All is forgiven now; see Figure 4-2.
Figure 4-2. The new TileWorld Calculator app has three modes: Standard (complete with four functions, memory, and square root); Scientific, shown here at top; and Converter (bottom). The Converter offers three pop-up menus, marked by the usual buttons. The top one lets you specify a conversion type: volume, length, weight, temperature, energy, area, speed, time, power, or data. The two lower ones let you specify what units you want to convert to or from. Handy, really.