Well, not really. But my LifeSaver 2 app has now uploaded over a million calls and messages for a temporary stay in the cloud and (in theory) transfer to other devices. This is not as impressive as it sounds since the number of unique users is still just a few hundred; but it pleases me nonetheless. I observe that the number of downloads is quite a bit smaller; it seems that people upload, and then it takes them longer than they thought to get their new device brought up and LifeSaver installed; long enough for the cloud scrubber to have erased their upload, so they have to do it again.
All this is costing me three or four bucks a week in App Engine charges.
There is a faction of users who really want a persistent off-device store for their life’s history. So far I’m not smart enough to figure out a good way to do that doesn’t get in the way of the vast majority of users who just want to push a button and have it happen auto-magically.