I've recently released my first free to play game on Android and I've spent a few £ on advertising to try and get players involved and see what happens.
Below are my retention stats courtesy of Google. Judging by the colour coding 50% is good <30% is not so good, but in reality I have no real idea what these numbers should look like. So this question has two parts really.
What are ok/good numbers for Days 1, 2, 7 and 30? So I know what I should be targeting, and what are good ways to increase my numbers to get the to that level. There are the obvious things such as notifications, but what are the less obvious strategies that a novice is unlikely to think of?