Current iOS version - https://itunes.apple.com/us/app/nms-ally/id1137439479?ls=1&mt=8
Newer version for iOS out soon.
Ahead of No Man Sky's release next week, a fan-made mobile app has surfaced on the Google Play store that boasts an array of handy features when exploring Hello Games' forthcoming space sim.
Dubbed NMS Ally (as spotted by Polygon), this free companion app provides users with the ability to share screenshots and upload them directly from their PlayStation 4. The app also features a creature and planet name generator, as well as an element journal that catalogs the location of discovered elements and where you can find payment for them.
NMS Ally is currently available for Android users, and according to a post on reddit by the developer, an updated version for iOS is currently awaiting Apple's approval. (Old version link above)