1. Let Apple Photos bring them up
The Photos app makes Memories from your library on its own, and some of them are built around a date. Add the Photos widget to your Home Screen (touch and hold the Home Screen, tap Edit, then Add Widget, and search for Photos) and it shows photos and memories your iPhone picks for you. If an occasional surprise is all you want, this is enough, and you need nothing else.
2. Step back through the years yourself
In Photos, open your Library and switch to the Years view. Each year shows a highlight; tap a year, then go to today's date in it. It works for any date, but it is one year at a time and takes a few taps per year.
3. Every year of today, in one place, every day
Rolldrift turns your camera roll into a feed you scroll like any other, and every morning it puts the photos you took on this day in earlier years at the top: "7 years ago today". A Home Screen widget shows one of them each morning, the Lock Screen widget says how long ago in words, and an optional reminder comes only on days that have a memory. Those are free. Rolldrift Pro, a single purchase, adds Rediscover: every year of today as its own feed.
Does a memory app need to upload my photos?
No. Everything above runs on your iPhone. Rolldrift has no account and no server: it reads your library the way Photos does, and the App Store privacy label reads "Data Not Collected".
Why is there no photo from this day?
Nothing was taken on this date in earlier years, or those photos are not in this iPhone's library (for example, they are only on another device or in a shared album). On those days Rolldrift's widget shows a photo you hearted instead.
Does it work with iCloud Photos?
Yes. Photos stored in iCloud load as you reach them, the same way they do in the Photos app.