It's impossible to reset it with one iphone.. But with 2 you can.
you should have 1 tiny monsters iphone which we'll call A (the main one we want to reset) and the other iphone that you'll need is called B
With iphone B, download tiny monsters and do the tutorial like you would normally do. When allowed to, press "Options" and go to "Restore Game". You should be able to see 2 options: Old Device and New Device. You essentially want to move your file from iphoneB to your main iphone(A). With iphone B click "old device" and it should bring you to a restore code.
On your main iphone(A) click "new device" and enter the code from iphoneB
Restart your tiny monster app and when you go back in... it should work. you may now throw your other iphone in the garbage (just kidding :))
Reason why i say another iphone is because my girlfriend has the s3 and the game doesnt have the "restore" option
Chat with our AI personalities
Click on the settings and in the bottom left there is a reset button. Press it
You shake a tree for diamonds in Tiny Monsters.
It is an app available at the iStore.
To reset your password click the forgotten password link which is on the login page.
Delete the app and then re-install it.