Myco free contains information about 50 types of mushrooms, with zoomable image. Data is structured by occurence, characteristics, edibility and possible confusions. Most information is taken from Wikipedia but available offline - should there be no connection while collecting mushrooms in the forest. Store your localities with GPS position and take a picture of the mushroom and its surroundings, so you'll be sure to find the place again. For each locality you can save location, date and time, a photo and a comment. This free version is for trial use. In the standard and pro versions you can find over 250 mushrooms and additional functionality.