In March 2013, Flurry introduced a Klout-like rating system for mobile apps, and we’re glad they did. This was one of those needs we didn’t realize we needed: with such a crowded app market and only user ratings to go by, an industry rating system will be helpful. After all, the app economy isn’t easy to succeed in, and this rating system addresses one of the key challenges. Namely, whether you’re earning revenue from in-app ads or offering a “freemium” app, if you can’t retain users, you’re not making a dime.
Accordingly, Flurry notes that the most successful and profitable apps are the ones that users keep and engage with the longest. But shockingly only 15 percent of apps have retention rates of 37 percent or higher. So many apps out there can quickly attract lots of downloads, but the novelty wears off quickly and they either get deleted or left to stagnate.
Mobile Posse 