GhosthoundField is now free on the Apple App Store for iPhone and iPad.
It is a field notebook for paranormal investigations. Start a case, log the session as it happens, and record what the device can actually measure: barometric pressure, the compass chip, outdoor weather, moon phase, and the NOAA geomagnetic Kp index. A paired Bluetooth sensor can add indoor temperature and humidity.
Evidence stays with the case: EVP audio, photos, and LiDAR room scans on supported iPhone Pro and iPad Pro models. When the session is done, export the notes, audio, photos, and scans from the phone. GhosthoundField does not use an account, and it does not keep a copy of the investigation.
Requires iOS 17 or iPadOS 17.