Elk101 is pretty archery/calling style specific, but there are some sections that are definitely helpful for all aspects of elk hunting. He covers all the basics (drawing, picking units, getting in shape, cleaning an elk), that go for all hunting. Listening to all of Randy's podcasts and youtube videos will help you just as much if not more when it comes to rifle hunting strategies, as he's the one that does the late season tactics for Elk101. Ive never bought the Roe, but looked at it from the outside and wasn't impressed. If you want an app like Roe's, look at the elknut app.