I think it might be a good idea for this developer to disable the ads for now and then develop a promo code system. Then the paid customers could be asked to si

I think it might be a good idea for this developer to disable the ads for now and then develop a promo code system. Then the paid customers could be asked to sign up by email, possible sending their receipt for a promocode to disable the ads when he puts the back in. I've just started using Parse for analytics, error/crash reports and promo codes. Seems to be working well although I haven't started analysing the usage data systematically yet but I have found a number of errors I wasn't aware of from the error reports. Http://iTunes.com/apps/fastlists Promo codes have gone out to a couple of bug reporters (who weren't expecting them) and friends and family. When I've stabilised all the bugs and added a sync system I'll send them out to reviewers too. New version in review should fix most of the errors (only one of which I have received user feedback about despite having a report a bug option in the settings and promising to provide freebie upgrade for users that report bugs). I recently added in-app purchases and ads (iPhone only for ads so far). I had one bad review for offering 'Privacy' as an in-app purchase that would disable the anonymous logging and I've renamed that item. Otherwise no complaints. I did grandfather existing (free) users into unlimited items and readable email as I didn't want to remove existing features from people while imposing (high) limits on new customers that require in-app purchase to lift or remove. If the existing user installs the app on a new device they will have to buy (if they complain nicely they might get a promocode).