Over the next four days app travel guide publisher mTrip is offering over 30 travel guides for free. The guides are normally US$4.99 each via in-app purchase, but due to recent changes by Apple that allow developers to offer in-app purchases for free, the company has decided to lower the price of their guides to $0. To get the guides, simply download the (always free) MTrip app and, on each day listed below, grab the free guides for that 24-hour period.

Here are the dates and destinations:

August 27

  • Berlin
  • Amsterdam
  • Beijing
  • Florence
  • Madrid
  • Prague
  • Singapore
  • Edinburgh
  • Dublin

August 28

  • Istanbul
  • Budapest
  • Brussels
  • Hamburg
  • Milan
  • San Francisco
  • Stockholm
  • Copenhagen

August 29

  • Rome
  • Tokyo
  • Bangkok
  • Hong Kong
  • Moscow
  • São Paulo
  • Warsaw
  • Cologne

August 30

  • Venice
  • Vienna
  • Dubai
  • Lisbon
  • Munich
  • Shanghai
  • Washington DC
  • Chicago

This article was originally published on Tuaw.