The code is open source and available at https://github.com/lpar/RPN
Found a bug? E-mail firstname.lastname@example.org
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2.0.4 fixes a crash and allows raise to fractional powers.
2.0.3 tweaks font sizes when system font size is "Huge", to avoid a layout glitch.
2.0.2 fixes visual glitching on Galaxy Nexus running Jelly Bean (Android 4.1).
Version 2.0 added a redesigned Holo UI and requires Android 4 (Ice Cream Sandwich). It also added a square root function. Version 1.x is still available for older phones.