KanjiSpot is a kanji OCR app : an app aimed to visually recognize the Japanese ideograms (the kanjis). You only need to focus on the fragment of the picture including the kanji that you want to get the meaning; KanjiSpot analyzes the picture and identifies the kanji corresponding to the picture.
KanjiSpot provides the information related to this kanji (kun reading, on reading signification) as well as a list of words (kotoba) containing this kanji.