You can export your data using the iOS app by tapping on Manage > Email Data File, entering your email address in the To field and sending the email. This will email a copy of your data to yourself.
Alternatively you can tap on Manage > Backup Data File, which will save a copy of all your data onto your device. Either way, the data is saved/emailed as a .shrthnd file, which is a proprietary Apple format and can't be easily read by other applications, but can easily be restored back into Ovatu.
You can also email and print reports by tapping on Manage > Reporting then tapping on the Actions icon in the top right corner of the screen:
Please tap on the Web app tab under the heading of this help guide to learn how to export more data in the web app