The application has not internationalitation (i18n) support so the UI is just in English.
I've been seeking on the android devel docs[1] and I found a easy solution. You just need to create one directory per language cloning res/value/strings.xml but with the translations. Like this:
res/
`-/values/strings.xml
|-/values-es/strings.xml
|-/values-it/strings.xml
.....
I've attached a patch which create the Spanish translation. I've tested and when your system is in Spanish GetPills show the Spanish strings. It should be the same for the res of languages.
I hope this help :-)
BTW, thanks for this useful piece of software. It has been very useful for me :-)
[1] http://opensource.csdn.net/uploads/doc/android_1_5_r2/guide/topics/resources/resources-i18n.html
Patch for adding Spanish translations to GetPills