Great BUT do not upgrade in-app

I waited to upgrade to the wonderful Pcalc, but the upgrade path is NOT available from within the Pcalc Lites new in-app purchasing.

Be aware you can not upgrade to Pcalc via purchasing the full $9.99 package from inside Pcalc Lite. It is NOT the same product. If you want Pcalc DO NOT try to purchase from within Pcalc Lite. I believe the new in-app purchasing mechanism inside Pcalc Lite is very misleading, no matter how intentionally so. The $9.99 price for the "full" Pcalc Lite version is the same price as Pcalc, but it is NOT the same product.

I have never had a failure in conversion to a full version of an app via an in-app purchase from the free version until now. Every single time the free app icon was replaced by the full paid version icon that was priced the same as the in-app purchase. This will not happen with in-app purchasing with Pcalc Light. You end up with an enhanced version only of Pcalc Light.

Birdhop about PCalc Lite, v3.5.3