It is not a real bundle, but AppyFridays.com currently promotes 3 free apps, which can be directly downloaded from the App Store until the 7th of april.
The following 3 apps are for available:
tEditor (4,99$)
a short text editor to fulfil daily tasks.
Short Wave (3,99$)
a player for internet radio streams.
Nanotate (4,99$)
a screenshot tool.