I’m hesitant to name anything specific since time exists and tech fluctuates, but there’s definitely a small, free utility app for your device that will strip exif data from your images.
Search for ‘remove exif’ in your App Store and see what people are saying about the top several apps listed.
(EtA: In nongeek, ‘exif’ data includes the photo’s gps coordinates, specific type of camera or device that created the image, timestamp, and other info, and its all quite easily viewable.).
Nerds use these apps more than most, so their reviews tend to go into some detail. There are certainly apps available that are easy to use on your device. Obviously don’t use an online service for this, either.