SpectraBoxSpirit box, EVP and EMF guides
Plain-English explainers on spirit boxes, electronic voice phenomena and phone EMF meters, written by the makers of SpectraBox. Everything here is framed as entertainment, with the psychology and the technology explained honestly.
What is a spirit box?
Plain-English guide to spirit boxes: how the radio sweep idea works, where it came from, how apps recreate it, and why it is entertainment.
How EVP recording works
What electronic voice phenomena (EVP) are, how investigators record and review audio, the ordinary explanations for odd sounds, and how to keep an honest log.
Spirit box vs ghost box
Spirit box, ghost box, Frank's Box, radio sweep, EVP recorder and EMF meter compared. What each name means and which one you actually need.
How to run an EVP session
A calm, structured guide to a first EVP session with a spirit box app: preparation, questions, timing, logging and honest review.
How to choose a spirit box app
A fair, brand-neutral checklist for judging any spirit box app: offline behavior, honest framing, permissions, privacy, exports and pricing.
What is an EMF meter on a phone?
How a phone EMF meter uses the magnetometer, why the number jumps near electronics and metal, and what it can and cannot tell you.
Why spirit box words feel meaningful
The psychology behind spirit box "answers": auditory pareidolia, confirmation bias, priming and big word lists, plus how to run a fair session.
Are spirit box apps real?
Honest answer on spirit box apps: how they make sound, what streaming vs on-device means, how to test an app offline, and why it is entertainment.