After updated for iOS 10 you may see the message ‘App may slow down your iPhone, The developer of this app needs to update it to improve it’s compatibility’. This inform that app is build 32-bit version and does not support 64-bit, but 64 bit processors are totally capable run these apps just fine. So this message don’t require any action from you and you can use application normally. Even message says it may slow down your iPhone, it’s mean that app itself can run a little slower, not your phone. And slower means that you shouldn’t notice this slow down at any way.
Site notice, we are working hard to get updates out soon as possible. Unfortunately we have some slowdowns on our projects and updates are coming little later what was our first thought. We hope to get first updates out before Christmas, but for this year obstacles nothing is sure.