This is great. Many years back a group of us developed an OCR app on Android, at the time the market was not saturated and we found a way to deliver what was cl

This is great. Many years back a group of us developed an OCR app on Android, at the time the market was not saturated and we found a way to deliver what was close to state-of-the-art if a bit expensive at the time service. We spent a lot of effort on pre-processing and user education through the app to try and maximize chance of good OCR. It was pretty good. We managed to have a few thousand users and made OK $ but nothing near life changing. Then the market got competitive and saturated and also our focus started to slip to other things. What we found is that a small cohort of our users were in some way visually impaired and were very reliant on the app. We ended up consciously deciding to focus exclusively on this cohort which is not a typical product management strategy (assuming your trying to max $) but the remaining enhancements we did made some lives better and we were happy with that.