I try to optimize what I do but I'm pragmatic. I was using an iPhone and a Nexus 7 and wanted a way to be able to modify notes from multiple systems. I tried iCloud Notes and was able to update notes from the N7 but performance wasn't good because I had to use the browser - and that only worked when I was connected. So I tried Google Keep. Same problem - worked fine on Android but I could only access it through a browser on iOS. There's a huge request page on Google+ asking for Google Keep on iOS. It's been there for years and Google's response is to use the web browser. My response was to buy an iPad Mini and stop using the Nexus 7. Problem solved. Google Keep doesn't have any advertising so Google doesn't have an incentive to port it to iOS. There are advantages and disadvantages to both platforms. At the moment, I prefer iOS overall to Android and I've made a commitment to that effect for the next two years. If you can't decide, you can always just flip a coin.