[dotnetkow]

$2-5k per month (after Apple's cut) from my Fitbit mobile app, Fitwatchr: https://itunes.apple.com/us/app/fitwatchr/id684005201?mt=8&i.... The unique value is Fitbit activity conversion to Weight Watchers points as well as a tougher but more rewarding calorie tracking that is based on real science (Mifflin equation). Effort on my part really depends on me/my current schedule as it's a side project. I admittedly have some bad reviews that boil down to getting users to understand how the calorie tracking works. Using Freshdesk (love it!) to answer 1-2 emails per day. It'll be 1 year working on this next month.

[TheAlchemist]

That's quite a good revenue. Is it only from app sales ?

I've checked on App Annie ans your app seems to be around 500 (grossing) in health & fitness in the US. I find it a bit surprising that there are 500 apps in health alone making >2k month.

[dotnetkow]

Yes, only app sales - no IAP. Not sure how to explain other apps, but if you look at the list of top paid Fitness ones, many of them charge more than the typical 99 cents - that probably factors into it. It certainly does for mine! Also, I've noticed Yoga, pregnancy, etc apps absolutely kill it (consistently!) in sales day after day after day....

[tomjen3]

Curious, how long did you spend developing it?

[dotnetkow]

Unfortunately for the first version I didn't track hours (I am now). It took all of last summer (June to August) of nights and weekends. Not too bad considering it was only a few hours per week b/c of being more active outside due to Summer. It's PhoneGap based, so much of the effort wasn't so much writing features so much as learning/figuring out the tools I used: KendoUI Mobile for the UI, PhoneGap Build for building native versions, and Knockout.js. I come from a .NET backend background, so I wanted the new challenge of building an app with frontend tech, not only for CSS/JavaScript practice but also benefiting from one codebase for multiple platforms (iOS, Android, and WinPhone 8).