1.5 Submitted to the App Store

I submitted version 1.5 at the start of this week so it should be available some time next week.

What's new:

• Help link on the front page.
• Tracked down the weird bug where you sometimes couldn't navigate back from the settings page
• You can now customise the colours of the numbers
• You can switch the timer off
• Built in puzzles now have history (up to a maximum of 20 per difficulty level)
• Numbers on the recognition screen are now much bigger
• Usability improvement for color blind users (added a ? to problem numbers).
• Smart numbers - numbers will disable once they are completely filled in.
• Alert when you start up if you are already playing a puzzle
• Deletion of tags is now much easier - just swipe left on the puzzle book screen on the tag you want to delete
• Option to delete tags that are unused when you delete a puzzle
• Timer now handles sleep properly

And some general bug fixes.