The PVOX Free Sprit Box is a professional piece of equipment for paranormal investigators aka ghost hunters. PVOX Free uses your mobile device's highly sensitive mobile's sensors which are believed to grant spirits or entities the ability to transform their communication into words by manipulating the environment such as Temperature, EMF, and light sourcesIn this Free version of PVOX, our database or dictionary consist of 750 built-in words, compared to the Pro version that has 1200 Built-in words. The PVOX Free Spirit Box does not include the built-in log system, which you can click in to see and analyze the captures you made and what time they occurred. which will be stored in your phone's memory, get the Pro for that feature. During use of the PVOX Free Sprit Box App, the tool can trigger many words. Keep in mind that significant environment changes around the Device can trigger words from the database, what you are going to look for, is words which you can simply relate to, it could be an answer to a question you asked, or something in your in the environment which makes sense.