DragonSoul is a fun and addictive game for iOS and Android, published by PerBlue. In DragonSoul, you collect heroes, and team them up to fight in a variety of scenarios. It is possible to enjoy this game without paying any money, and a minimum payment of $3 (USD) gets rid of some of the little annoyances to enhance the experience.
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Boss Battles
Challenge and Mountain
Contests
Temples
Traders
Gear Lookup. Find out what gear each hero needs, and what each piece of gear is worth for enchanting. Also tells you how many of each scrap is needed to max out every hero in the game.