I learned about OneBillion after reading a recent article on HuffPost. As the mom of a toddler, I'm always on the hunt for educational apps. I must say, my daughter loves the app, even if we cannot understand a word of the instructions. :-) It's simple enough for us to poke around and figure out what's going on (like with the pattern exercises). My two suggestions are to: 1. offer an option to hear it in English and 2. offer an "in app" purchase option for users to "purchase" the app in support of kids in Malawi. It's easier for me to click to authorize a purchase in the Apple App Store as opposed to going to your website, finding a "donate" button, find my credit card, then enter info to make a donation. Better yet, offer a version of the apps in English for purchase for $10. Keep up the good work!