Good.....But So far so good,compared to similar apps. I'll keep it for now. I've not long started using Cleaner but 4 stars i think is fair....Update....Cleaner app is a good app for Android devices. The only problem with this is that if you use the widget cleaner it cleans files that you want to keep. But the full app let's you select the right files if this was fixed I would have kept it. Amazing!