You had probably acted to fast with your back button or home button and the app had no chance to validate the purchase. To fix this, on your device, please go online, login to the Google account used for the initial purchase and start the app. Then let it download your purchase information and verify it against our validation servers. This may take several seconds depending on network conditions. You can also try to reinitiate the purchase and the app should detect your previous purchase and start validation.
Although my apps are already translated to several different languages there are many other which are not supported yet. I regret this but I can't provide translations for all the tongues in the World on my own. However, if you would be willing to help, we could change this at least for your language as I already did for other with a little help from good people around the World. If you are interested please visit the page about translations of my apps.
Application: Glycemic Index and Load
WATCH THE VIDEO TUTORIALS
Although the app is easy to use, we have recorded a few short video guides which show some features in action, also these premium ones. So take your time and go to the video section.
MY OTHER APPLICATIONS
I was born to be a developer. I enjoy creating things out of nothing and share them with people. I've been doing this since several years and recently I create for mobile devices. Please make yourself comfortable!