No, Tada App does not leave any scripts on your site after uninstalling. Tada's uninstallation process automatically removes and clean up any code from your theme.
If you still have any questions about this, submit a ticket here and we will get back to you as soon as we can.
Keywords:
Will the Tada uninstall process clean up everything?
What is the uninstall process for Tada?
Do I have to remove the code from my theme after uninstalling Tada?