I did public transport train routing and scheduling app for my city. Free + iAP worked for me, with around 4% conversion rate. Granted that the iAP is priced a

I did public transport train routing and scheduling app for my city. Free + iAP worked for me, with around 4% conversion rate. Granted that the iAP is priced at just $0.99, most feature are free, just that viewing the train ticket price and which stations are near to certain attraction places require iAP