Google Photos recently updated its desktop,Android and IOS app. Google Photos is easier to use, has more capabilities and offers almost unlimited storage via Google Drive. A slight advantage over the IOS(Apple) app where you pay for storage over 5gb on iCloud. By no means is Google Photos a professional editor but for the casual Smartphone user this is a pleasant addition. The desktop version allow you to upload photos from your hard drives and sd cards.
I have two other redundant but very useful backup services. When I take a photo on my smartphone it automatically backs up to Flickr and Amazon Photos.