Q: I bought an iPad 4 in november i used in IOS 6 for 2 weeks, if I update to ios 7 i can dowload iphoto free?

Yes, you should be able to download free apps after updating to IOS 7.0.4

If this was a qualifing purchase (and it should be).  Then Yes.

Update to ios 7 after you do a careful and complete backup of your iPad.

Follow these directions to download your free Apps.

http://support.apple.com/kb/HT5913

Did you purchase the iPad 4 as a new device?

If so, I agree with Diavonex.

If not, I don't believe you can get iPhoto for free.

The iPad 4 originally went on sale in the U.S. in the autumn of 2012.

You should be able to download the following apps FOC

1. Pages

2. Numbers

3. Keynote

4. iPhoto

5. iMovie

6. GarageBand