After a couple of rejections in the App Store review process the app was approved for sale on the 24th of August.
The first week brought about 50 sales at $2 each.
Before the launch I focused a lot on creating nice looking screenshot images for the app store product page.
Stats for the first week on the app store:
1M Impressions
3.6K Product page view
The second and third week brought 2M impressions each and about 10K page views combined, getting featured under "Great New Apps and Updates" helped a lot with initial sales.