I just noticed that writing tags is only available on the paid version. I as of when I started using this app a year or two ago there was no other app that could write standard tags to photos. Regardless if that is still the case, purchasing this app is a no brainer in my opinion for that functionality alone. Also, to convert your current albums to tags you should be able to go into each album, then select all photos, then press the tag button and choose or create a tag.
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