FEH Builder is a free Android app developed by Nofarm Studio under the Education & Reference category. This app serves as a comprehensive guide for Fire Emblem Heroes players to build their heroes with ease. The app is compatible with Android 9.0 and offers a range of features to help players improve their gameplay.

FEH Builder provides players with detailed information about heroes' stats, skills, and IV. Players can also create and publish their hero builds and collect unit builds uploaded by other players. The app also includes a battle simulator that allows players to form their battle teams and simulate battles. Additionally, the Arena Points Calculator feature helps players calculate the Arena Points of their team by selecting four heroes.

FEH Builder is not endorsed by or affiliated with Fire Emblem Heroes, Nintendo, or Intelligent Systems. The images from Fire Emblem Heroes used in the app are intended for informational and reference purposes only and do not infringe or interfere with the market presence of the game.

Overall, FEH Builder is a useful tool for Fire Emblem Heroes players who want to improve their gameplay by building and customizing their heroes with ease.