Very interesting, and a bit similar to my entrepreneurial journey with websites. Making a single very successful website is quite a challenge, as I found out. What will be your main strategies making your apps successful? Pure product focus? PR? Other forms of marketing?

It'll definitely be a combination of product and pr. I've done lots of things over the years with varying levels of success, but so far my success has been mostly through product and App Store Optimization.

The new App Store Analytics Apple just released will be a big help though. I have a lot of new ideas that I'll write about once I've given them a try.

What type of marketing did you do (if any) for your apps? I've found building is a lot easier than getting the word out and attracting users.

As noted in the other comment, I've tried a lot of different things with varying levels of success, but for the most part working on the product and App Store Optimization have been the biggest things.

I do have a lot of new ideas that I'll be trying over the coming months though. It's a different strategy putting more focus into a bigger app than one off sort of things. Many of them didn't get any outside promotion other than maybe a tweet here or there. 4 years ago the App Store was a much different beast. It really was build it and they will come. As the market matures though, you have to change with it.

Dave Ramsey fan?

Yeah to an extent. I do think envelope budgeting and debt snowball methods work well.