The jinn are beings of smokeless fire from Islamic and Arab tradition, neither wholly good nor bad. In a dream they are read as hidden forces, temptation or powerful unknown energies.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.