Squirrel 1.1 for iPhone has been released today.
It features the much requested passcode protection. Just go to the settings to activate it.
Also, the running balance can now be shown just by shaking your iPhone or iPod Touch. Finally, all the known bugs have been fixed. New features will be implemented soon. Stay tuned 
What a brilliant idea, to use the accelerometer!! I’m very impressed.
Thanks guys this ist great. I really love things just because it’s so simple and elegant.
Congrats Axel !
The new feature is just awesome…. I just have to say that I’m very impressed by your job… Keep it this way….
love the new features, although the unlocking animation does get in the way of just jumping into the app and quickly adding a transaction, could this be optional?also transfers would be a great addition as well…
keep up the good work on this awesome app.
I agree with george, why not use the animation only when you choose to have a password? Otherwise a great complement to the application in OSX!
That’s an iPhone SDK issue. When you launch an app, the iPhone displays an image as it is loading the application. As I cannot change the image, I’ve chosen to display the vault image, even if no passcode is set.