I used PolarSteps on my last camino and really liked it. It doesn't create any sort of public blog - you have anyone you want to follow you create an account on the App and then click to follow you. Uploads text and photos, which I did daily on the camino. All of that is free.
It made a terrific book, which we had to buy (maybe $150 or so if I recall correctly) - besides everything uploaded, it showed elevations, locations, temperatures that particular day, an over all map showing the entire journey, etc. As far as I know, no editing was permitted - so any typos in what I uploaded were duplicated in the book. But before ordering the book, I could have gone through the App and corrected any typos. The book looked extremely professional, and the book itself must be at least 200 pages (our entire trip was around two months, including non-camino sightseeing before and after the pilgrimage).
All in all, we were very happy with the App and plan to use it again this fall. I also used PolarSteps. I think this is one of the best programs in this segment. But at the same time, sometimes it is better to use ready-made images and photographs from specialized online services. For example, I recently found a wonderful graphic set of
office christmas party images which I plan to use on my blog. I believe that this is the best option if you do not have enough skills to edit photos yourself.