What do popular apps on the App Store do to launch so massively?

Having gone through this multiple times either in new startups or for side projects, here is how I would approach turning your idea into an app. 1. Defining the Minimum Viable Product Your first goal with any new idea should be about proving the idea and finding a market that wants the app you want to build. Achieving that quickly is probably one of the most important thing. To achieve that, you will need to write the specifications that will constitute your MVP. The MVP is basically the simplest expression of your idea to prove it. This step should not cost you much as you can do this on your own. 2. Design the app Before starting any development work, I would suggest you work with a good UX/UI designer to create wireframes and mockups of the app based on the specifications you came up with in step 1. You can find good designers in meetups & hackathons or on website like Dribbble or 99designs. If you want to reduce your costs, you can give shares in the project to the designer. Otherwise, it really depend on the size of the MVP but I would say it will probably cost between $5K-$10K. 3. Develop the app Once you have the specifications and the design of the app, you now need to find a good developer that will build it. Again, you can find good developers in meetups & hackathons or on sites like Github. If you want to reduce your costs, you can give shares in the project to the developer. Otherwise, it really depend on the size of the MVP but I would say it will probably cost between $10K-$25K. For this part however, I would recommend the developer becomes part of the project as his engagement will most likely be higher. 4. Test the app This step is not only about making sure the app is bug free, it's also making sure the app does what was intended in the specifications. To test the app, you can use platforms like BrowserStack or SauceLabs which gives you access to multiple devices/browsers. You can do this step on your own so the cost will be for the subscription to the test platform which would be around $100/month. Hope this helps and good luck with your project.

Designer. Specifically a UX "designer" as you say, who doesn't just draw screens, and won't draw any for weeks or months. They will not just use their knowledge but will go out and talk to users, observe how they solve the same problem today, and help create the scope of work, and design the basic functionality. If you hire a developer first, they will build stuff that may or may not be of any value. If the company survives the first few rounds of building the wrong thing, you are still spending a hell of a lot in rebuilding, re-marketing, etc. etc.

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!

The best day to launch your app is either Wednesday night or Thursday, because the iOS App Store changes features every Thursday and you may get featured that day as "New games..." "New app..." etc. Ideally all your marketing/PR/advertising efforts should start that day (Thursday) because Apple likes it when an app is being privately promoted at the same time it's being featured. Yes AdMob could work for you but please know that there are many other ad placement companies similar to AdMob that can work for you too. You need to see what kind of clients they have, if they match with your niche, etc. Usually this is a trial and error process, you start with several ads and you see which works and which doesn't, you improve, you cut them. etc. Good luck

First of all, there is no "one size fits all" attitude in angel investing. I will tell you that the *best* angels will make a snap decision by playing with the product and assessing founder/market fit. At the right valuation, the kinds of angels you really want backing you will invest purely based on a killer early product experience and conviction of founder/market fit. But if you have made your app available in the US app store already, you have made a critical tactical error if your app isn't already trending towards 100,000 installs within the first 30 days of availability. Apps should first launch in a non US, english-speaking store to do early product/market fit work. Your "day one" event in the US app store matters to seed investors and many angel investors. While there are exceptions (most often in SaaS or enterprise mobile models), there are only 4 times to raise funding from seed funds for a mobile start-up stage company: Pre-product: A deck, a market opportunity and a team. Pre-launch: Product fully built but holding launch for funding. This will usually involve a private beta of at least 1000 users or a soft launch in an international store. 30 - 90 days after US launch: Must be at or trending towards 100,000 installs with very strong month-over-month growth. If you miss those windows, the next time to raise is after you pass over 1,000,000 with strong retention and engagement that correlates to your business model and user personas. As a mobile-first entrepreneur and angel investor, I'm happy to talk to you about this in more detail