Hi! This is a very ambitious question! Good for you but you weren't as targeted/realistic as you should be asking the question. Growth hacking is not magic, it works but not over night and not specifically for a set number of users or conversions. Ultimately what you want is number of users d...
Slack is best for internal communications but not exactly sharing information. Have you thought about Evernote Business?
Optimizely is a popular testing service that lets you do this. See: https://www.optimizely.com/mobile/ and http://developers.optimizely.com/ios/
There are quite a few issues multiplying apps on the app store itself. So I'd save that for a time when you have some very precise discovery to do. My recommended growth hack strictly for a short-term test is to price the app on the store at the lowest figure you want to test, while naming a ran...
I would reach out directly, especially to some of the gaming companies who have got this process down to a fine art. Network on LinkedIn and you'll be surprised how helpful some of these folks will be, especially in the nordics where there is a very open culture of sharing , even in some of the b...