Best Free Device Tracker for iPad
Find My iPhone (17.0 MB), not just iPhone, you can find your iPad if lost. Run this app on another iOS device, sign in with your Apple ID to locate your missing device on a Google map, send a message or play a sound on the device, lock it, or even erase your data remotely. See also: How to Find Your iPad.
Best Free Password Manager for iPad
LastPass Tab Browser (3.3 MB), LastPass provides a safe and convenient method of storing your passwords in a vault so that you can access it everywhere (Review). From your iPad, you can easily access your LastPass Vault via LastPass Tab Browser, yet another browser but well integrated with LastPass. See also Web Browser.
Best Free Private Library for iPad
Private Photo Vault (8.9 MB), manage your private photos into albums with a password. Useful features include import and export, slideshow, built-in basic editor and more. Unfortunately this free lite version only allows for 2 albums per account and some advanced features are limited.