iOS developer here.
Good advice mygestic. The app is working but a little rough around the edges. I focused on security first and opened the code up for review prior to release. There hasn't been any negative feed back on that front.
The app doesn't store your seed anywhere but your phone, not even sending it to a server in an encrypted format like some web wallets.
As long as you save your seed safely offline there shouldn't be any risk of loss. If you don't trust me, which you have no reason to, you can go to the github and compile the code and load it onto your own device.
If you'd like to support me, please download the app and test it for me