Anyone who is tech savvy enough to use this tool will sure appreciate it. XDA Member el_tuba has developed "HexEditor". The app is simple and small but is powerful for editing your binaries. It has basic features such as:

  • Jump to
  • Search
  • Edit
  • Save
  • Directory browsing

The app is quite useful for editing. To download it, search on the market for "HexEditor" and the author is tuba. The discussion thread for this app is here.