Readdle Apps are celebrating their 5th birthday and have put all of their iPad and iOS apps on sale at up to 70% off for today (August 1) and tomorrow.

Readdle publish some superb iPad apps that we’ve covered often here – including PDF Expert, one of our picks for the Best iPad Apps of 2011 list, ReaddleDocs, Remarks, Printer Pro, and more.

These are some great bargains on some stellar iPad and iOS apps – check out all the details at Readlle’s page for the sale.