In response to quite a few friendly requests, we have decided to publish the source code of our Android 4 app “Calendar Manager”. It sets up an offline calendar on your Android device. You can be sure, that all events placed in this calendar will never be copied to any cloud or online service. All data remains on your device. As we think Google should have integrated an offline calendar into their Android System from start, we release the source under the MIT license. If you are an Android developer, or just curious how things work, take a look at weiter