@Rob:
I have now submitted a new version of Numerizer to both AppStore and GooglePlay. As far as I can tell, the issue is now resolved, but I would like to ask you to test it on the devices where it did not work for you before. Please let me know if the issue still persists on those devices.
Also, the problems with getLoadProductsFinished() in the simulator was a bug in IAP Badger but has now been fixed by Happy Mongoose Games.