Hello and thanks for visiting The Fizix Group. We have just updated the app Pooler. However, we have found a problem that Apple did not find upon review. If you try to run the App on any iOS that is NOT 8.1.3, it will crash. So you have two options, update, or wait for a bit to open the app until we have figured out the problem.
If you want to update your iOS, just go to Settings then select General. Under the General menu, the second option down is Software Update. Click on this and update to iOS 8.1.3. The update will take a bit, but once you update, which Apple recommends, the app Pooler will work with out any errors.
If you want to wait because you don't want to update just yet, don't open the App, it will crash for some unknown reason. The Fizix Group is working very hard to figure out what the problem is and will have an update ready in about two weeks or so.
Thank you very much for your support!!