How to make outbound calls on iPhone from 1-800 number we have through Twilio

If I had to pick a single efficient and affordable way of getting in front of a targeted audience I would have to recommend Facebook in-stream ads. You control the budget, the target group and the message and they are, right now, offering the highest conversion rates for mobile apps. Keep in mind that your app needs to be amazing - that's the most effective strategy of all...

Optimizely is a popular testing service that lets you do this. See: https://www.optimizely.com/mobile/ and http://developers.optimizely.com/ios/

Well, the biggest cost here wouldn't be in the app, but in the server infrastructure. As usual with connected apps, people often forget they have to be connected to servers. The app itself is just a view to what the servers provide, so it's not the major cost. 20K $ to 100K $ should be enough. On server stuff, I expect it to be a lot more, particularly if you aim for a wide audience (several million $). On a Whatsapp clone, I'd consider: - solutions for performing calls through servers, not that easy. Look at what Twilio provides. WebRTC is an upcoming protocol that will ease that (web & mobile). - solutions for API, IM and user accounts management. Look at StackMob or Parse which are MBaaS (Mobile Backend as a Service). Hope it helps!

Hi, check outmy response to another question similar to yours. I hope it helps. Overall what you need to do is grow your community of users, or depending on the app generate enough sales or interest typically before any investors considering joining you. Not impossible to get investors early on, but your best bet is through kickstarted if anything. My responses tend to get UpVoted by other experts. Check it out https://clarity.fm/a/8032

Ultimately, it depends on the value the app has for the buyer (not how much money you put into developing it). Unfortunately there are many reasons for a buyer to purchase an app and so there are many ways to value an app (a multiple of yearly revenues,number of active users, etc.) . A good solution to this problem is to post your app on an auction site such as http://www.apptopia.com/ and let the marketplace give you an answer. Good luck with your sale.