Get our iPhone Metro Maps for free! One week only.

It's ExploreMetro's Really Big Sale! From midnight tonight until midnight on February 7th you can grab a copy of Explore Beijing or Explore Guangzhou from the iTunes App Store absolutely free!

Here's what you're getting:

• Fully up-to-date - Every station on every line. Fully up to date with the latest extensions.
• Plan routes - Tap on a station to place a flag. Then tap a second station to place a second flag, and get instant time and price details.
• Works offline - Everything works without an Internet connection. Search stations and plan routes on the go.
• Bilingual - Everything's available in English and Chinese. Show a station name to a taxi driver or listen to a station pronouciation in Chinese.

All we ask is that if you like the apps, you leave us a 5 star review in the iTunes App Store :)