SmartGo Kifu is on sale for half-price until September 15. Building on the acclaimed SmartGo Pro for the iPhone, SmartGo Kifu offers a go board with tools to study go: professional game records, go problems, and annotated games enabling users to replay master games, solve problems, play against the computer, and record their own games. The first-ever sale for SmartGo Kifu, it may also be the last, says SmartGo author Anders Kierulf. “The main reason for the sale is to give SmartGo Pro users a fair way to upgrade to SmartGo Kifu. SmartGo Pro, now discontinued, was iPhone-only, and has since been superseded by SmartGo Kifu, which works on both iPad and iPhone. Unfortunately, Apple doesn’t provide a solution to upgrade users from one app to another.” At the sale price of $9.99 — instead of $19.99 – “This is your chance to upgrade to SmartGo Kifu, or simply get SmartGo Kifu at half off,” says Kierulf. “The next release of SmartGo Kifu will include joseki matching. Get ready by upgrading to SmartGo Kifu now.” For more information, see Kierulf’s blog post.