Making less than $50 on an Android app I coded for +10 months

Something to note is the Android store is a particularly poor avenue of revenue - I’m happy to pull up sources as it’s been a year or two but as far as I’m aware, the Play Store profits vs. the App Store (iOS) profits are literally exponentially different.

However, the big crack in this case is certainly free->monetized. Always a great way to lose an existing user base.

In the article it was stated that using this app for portfolio fodder wasn't good, but I didn't see it addressed anywhere though.

I mean, if you have a full time job and are not starving, I would use it as a learning experience but not pour money into advertising unless the product and the monetization plan is solid enough to turn into a full time job.