This app was mentioned in 4 comments, with an average of 1.50 upvotes
Penzu allows for that and you can also use it/edit on a browser on your PC, which is always a plus. The downside is that quite a few of its best features are only available to pro users. But if you just use one journal with multiple entries the free version should be enough.
Other than that, I also like Stories, which doesn't allow to insert the photos into the body of text but it does allow to attach multiple photos to a text entry.