I use my iPhone 6P all the time. it holds my life and my brain. I got tired of purchasing rulers, etc. twice (or more!!) so under notes I have lists of rulers and templates listed under each manufacturer with have and want for each. I have book lists, travel lists and lots of other stuff. Plus I have quite a few quilt apps that include ones for regular bed and coving sizes, ones that help with measurements for purchasing fabric and loads of other stuff. Very helpful. Just go to where you purchase your apps and search on "quilt" or "quilting", etc. All were free - yeah!!!
Sandy in Mooresville, NC