Over the last weeks I created the following app: http://www.leaguewinchance.com an app that tries to calculate your chances off winning a ranked game, plus gives you insight of summoner stats like winrates, kda. Just try it and give me your humble feedback.
Spread the word if you like my app.
Not a bad start. Honestly, though, no reason to pick this over lolskill. Lolskill gives better stats and is more updated (your app told me no champ info on Ashe but I have 3 games).
You're better off to go in a different direction to be honest. Something like summoner lookup, but more in depth than what we currently have. Something that gives things like gold/min, cs/min, etc.
