There are two versions of this program:
SmartGo iPhone a go playing program that plays on 9x9 11x11 and 13 x13 boards Web site: http://www.smartgo.com/en/smartgo.htm SmartGo iPhone is available from the iPhone App Store. http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=314506629&mt=8
SmartGo Pro has over 15,000 games and 2,000 problems as of version 1.5.1 (23 December 2009).
Both programs can be localized in English, Japanese, Chinese - Simplified, Korean, German, French, Russian and Polish.
Web Site: http://www.smartgo.com/en/touch.htm
SmartGo touch Pro is available from the iPhone App Store. http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=290948286&mt=8
The average average for SmartGo touch Pro rating is 4 stars! Over 20 5-star reviews in the United States App Store.
SmartGo touch Pro was rated 4.5 mice by Macworld. http://www.macworld.com/article/139740/2009/03/smartgotouch.html
The price is $9.99 (as of April 2009).