Seems fine for me, but just test it out yourself. Sometimes reviews are skewed because they're using a different version of the app to you, or on a phone that can't handle it or they've since released a patch that fixes whatever errors they were having. Regardless, if it's bad just use the website. You can input your selections for the entire season if you wanted and as long as you don't lock them in you can change them at any point up until kick off so just do that if you're worried about the reliability of the app or whatever.
Yap thanks, I just tried it and it works fine so far. The only annoying thing is only about the pop-up ads but it is a common thing. At least I can use it as an alternative way to make my prediction just in case I'm AFK.
You can purchase a premium membership there for £10 which removes adverts if it's an issue: https://www.superbru.com/premierleague_predictor/premium.php
Yeah, I like it a lot too. It has a lot more features than the BBC one. I like how there's the potential for prizes, though the likelihood of getting more than four or five correct scores is very unlikely and you need five to get the minimum prize of a SuperBru cap (not exactly a great prize but better than nothing I guess). Six correct scores will get you a Premier League shirt. What was the highest someone got last tournament? 4 or 5?