The latest developer success story comes from Tapity, an Apple Design Award winner and the brains behind education app Grades and Languages, its popular offline translation app.
They've now put both Grades and Languages for sale in order to focus exclusively on Hours, a gorgeous time-tracking software that I reviewed in the summer of 2014. What's really interesting about this is how forthcoming Tapity's been about stats for these apps.
You might find it interesting to learn what kind of revenue Grades and Languages have been pulling thus far and what potential bidders can look forward to after buying Grades and Langauges.