Free app helps restore, colorize, and date photographs.
MyHeritage website which is a paid site for some things has a free app that can help restore and colorize photographs. This can help preserve your photographs. It does not destroy the original in any way as you only copy it to the website. It works from the uploaded copy. They have just announced a new photo-dating addition to the app. This is also included for free. It estimates the photo's approximate date within ±6 years. While they can't guarantee an exact date it can put you in the ballpark to help you find or estimate ancestry data that can be obtained from the photo. Such as buildings, people, and surrounding areas, placing a more accurate time frame on the area and the people in them. This app is found under photos on the MyHeritage page.
I hope you find this information useful.
Michael