You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
I have had an issue signing up but was told it was fixed but I could still not get it to work. there is an update on iOS now to th eapp and all went through this morning but Play store has no updated app since the 13th so appears to still be broken.