The app is a simple one which allows the user to find predicted passes of the ISS and details of the passes. It also allows the user to go into a AR-mode to show overlaid on the device's camera, the path of the pass and the current position of the space station.

As we're on HN I thought you'd appreciate a little challenge. As I've recently read so much about how vulnerable MD5 and SHA1 hashes are I've posted 6 promo codes for the app store below. The first 3 are MD5 hashes and the last 3 are SHA1 hashes. Enjoy!

  55b2f186066bad4d7ceef8ae2ee6d722
  c6bbdca27affcb74482384cc50aaced9
  7828e9e4bec30e74dd53c99f161995d5

  da8cc33b2ced8b1a30e09b6bbc4e2f46c28059b1
  230eacd0401cf19b97482cf80865c345c32dc3c1
  2beac0773ed6b82632d1689874dd99f302de91b5

Tip: Promo codes are all upper case alphanumeric and 12 characters. Post if you crack one to prevent people wasting their time!