I'm Alex I have created an iOS app called eLogger. eLogger is an logging app designed for sports / reality tv, but can be used for any production which requires logging.
Download the app and sync the TC on the app to the camera and then start logging. Afterwards export the log file and merge the log to the rushes. You can see a full demo at http://www.elephantspeed.com
For merging the log file you have two options,
1. If you have interplay (avid assets management) you load the log file and apply it to the rushes via our desktop app, then in media composer when you open the project you will see timecode accurate markers attached to the rushes.
2. If you don't have interplay, email us your avid bin and log file and we will send you back an updated bin with markers attached to the rushes