Shameless self-promotion: my timeline app, Preceden, which lets you make multi-layered timelines, would be perfect for representing timelines like this (and the one in Primer!).

Check it out: http://www.preceden.com

Wow, cool I am going to do a timeline app for london start weekend. Planning to start prototype this weekend.

Just some feedback lower the barrier to entry. From the initial look of it, it seems like it would have a steep learning curve.

Your stats look great though. Spend $60 and get $145 back, you are on to something.

Thanks for the feedback.

The $5/day the led to that $60 didn't result in any paying customers, so I stopped. Blog reviews and word of mouth are much more effective.

As far as usability goes, it should be pretty easy to use. There are advanced features, but for a simple timeline, you should be off and running in minutes.

Hope you like it.

lol, I was trying to find that, hilarious!