28 WOSP is a free Android app developed by P4 sp. z o.o. operator sieci Play. The app is a quiz game that challenges players with nine levels and five chances on each of them. The questions are crafted to test players' knowledge of WOŚP, Woodstock, Owsiak, and other related topics. The app also includes a feature to support the WOŚP foundation, where users can donate through SMS or PayU, and stay updated with the latest news and statistics.

The app has a red interface and is easy to navigate. It has a time limit for each question, and players have the option to use a lifeline - Phone to a friend. The app encourages players to test their dexterity and perceptiveness.

Overall, 28 WOSP is an excellent app for those who want to test their knowledge and support a good cause at the same time. It is a great way to stay updated on the latest news and achievements of the WOŚP foundation. Try your hand at the challenge under the banner of the Great Orchestra of Christmas Charity and help with a good cause.