
Pick one app to be your home base and let the other be a safety net. If you choose Apple Photos, on iPhone go to Settings > Photos, turn on iCloud Photos and Optimize iPhone Storage, then in Google Photos tap your profile > Photos settings > Backup and turn Back up off to stop double uploads.
If you choose Google Photos, do the reverse and turn off iCloud Photos so you are not managing two masters. On a Mac or PC keep a full resolution copy by downloading everything to one machine. on a Mac open Photos > Settings > iCloud and choose Download Originals to this Mac, then back that machine up with Time Machine to an external drive and a second cloud backup. Do one 20 minute session on the first weekend of each month and ignore it the rest of the time. Start with quick wins in Albums > Media Types like Screenshots, Screen Recordings, and Bursts. In a burst tap Select and Keep Only 1, then delete the rest.
Then open Recents for last month and make one pass only. Tap Favorite on keepers, delete obvious junk, and move receipts or manuals to Archive in Google Photos or to the Hidden album in Apple Photos so they stop cluttering memories. Use built in cleanup tools. In Apple Photos go to Albums > Utilities > Duplicates and Merge, and in Google Photos open Library > Utilities and use the storage tools to review duplicates and blurry photos. Keep tagging minimal so it sticks and lean on what the apps already do like People, Places, dates, and search. Make a few evergreen albums such as Family, Travel, House, and Work, and add only your Favorites to them so they self curate. If you have a Mac, batch add simple keywords a few times a year by selecting photos, pressing Command I, and typing a keyword like 2024 Travel, then make Smart Albums that auto gather those. If you ever want an exit plan, export by year with File > Export > Export Unmodified Originals and choose subfolders by year or month, and keep that export on the same external drive as your backup.
Solid plan and one tweak that made it stick for me: treat Favorites as the only keepers and on the Mac create a Smart Album for “is not Favorite” and “date is before 60 days ago,” then once a month open that album and bulk delete what never earned a star. If you’re on Apple Photos with family consider a Shared Library with manual sharing and the “exclude screenshots” option so partner photos land in one place without doubling or cluttering your memories.