iPhone Paranormal Field Kit · For Entertainment
Hollow turns your iPhone into a beautifully crafted paranormal field kit — a K2 meter, Spirit Box, EVP recorder, an SLS skeleton cam, and AR ghosts that drift into your actual room. No ads. Made with care.
Six instruments in one app — some read real sensors, some are pure theatre. All of it is built for atmosphere, and all of it is honest about what it is.
A glowing K2 bar reads your iPhone's magnetometer and climbs through the colored bands when the magnetic field shifts around you.
Sweep simulated radio static and listen as short words surface from the noise — the way a classic ghost-box session sounds.
Record a few seconds of the room, play it back, and hear the words the night left behind. Clips stay on your device.
PROLive sound-level, vibration and barometric channels react to the room — a door, a footstep, a sudden cold draft.
A skeletal tracker paints stick-figure visitors over the live camera in the dark. Screen-record the moment it locks on.
Spirits drift into your real room through the camera — from behind furniture, beside a friend — ready to film and share.
PROCheap ghost apps make every tool work alone. Hollow links them together. When the K2, pressure and sound spike in the same moment, that's flagged as a confirmed event.
A whole night of events becomes an Activity Score and a shareable Hunt Report — so the experience feels like a system, not a toy.
Film the AR ghost rising in your living room. Catch a stick figure sitting on the couch. Send a friend the report card from tonight's hunt.
Every camera moment can be screen-recorded straight from the app — the shareable, screenshot-it-and-send-it kind of spooky.
Each skin retunes the entire app — color, ambience and glyphs. Even the camera filter follows your chosen mood.
Classic
Blood
Midnight
Retro VHSHollow is a paranormal-entertainment experience — not a real detector, and it never pretends to be. Every reading, word and apparition is generated for atmosphere.
No account. No analytics. No tracking. Everything runs on your device, and nothing leaves it unless you choose to share it.
No banners, no pop-ups, no nagging for reviews. Just a beautifully made app, supported only by an honest, optional Pro unlock.
Three honest ways to go Pro. The current price is always shown in the app before you buy.
Unlock everything, forever. No subscription, no renewals — pay once and it's yours.
A single in-app purchase on your Apple Account.
All of Pro, billed once a year. Starts with a 3-day free trial.
Auto-renews yearly until cancelled.
For a single haunted weekend or a one-off overnight stay.
Auto-renews weekly until cancelled.
Hollow Pro unlocks full AR & SLS without a watermark, the EVP recorder, every skin, and saved & shareable hunt reports. The free app already includes the K2 meter, the Spirit Box, the sensor panel, the watermarked SLS camera and a first AR apparition.
Prices are in USD and may vary by region; taxes may apply. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the period. Any free-trial period is forfeited if you purchase a subscription before it ends. Manage or cancel anytime in your Apple Account settings (Settings → Apple ID → Subscriptions). The Lifetime unlock is a one-time purchase with nothing to cancel.
Terms of Use (EULA) · Privacy Policy
No — and we'll never tell you otherwise. Hollow is an entertainment experience. Every reading, word, sound and apparition is generated by the app for atmosphere. The K2 number reflects ordinary magnetic fields (wiring, magnets, metal); the Spirit Box words, EVP reveals and AR ghosts are produced by the app itself. The fun is in the mood, not in a claim.
No. Everything runs on-device, in real time. Hollow has no server and no network code for your data — so it works just as well in a basement with no signal as it does anywhere else.
Hollow is built for iPhone on iOS 17 or later — that's where the full tool set lives: the K2 meter, Spirit Box, EVP recorder, the sensor panel, the SLS camera and the AR apparitions. Hollow automatically adapts to your specific iPhone, since the most advanced AR effects make use of newer camera hardware.
Plenty: the K2 / EMF meter, the basic Spirit Box, the live sensor panel, the watermarked SLS camera, one skin, and a first AR apparition to try. Hollow Pro adds the EVP recorder, watermark-free AR & SLS, every skin, and saved & shareable hunt reports.
None. There's no account to create, no analytics, and no tracking SDKs. Camera and microphone are processed live on your device and never uploaded; a recording is only saved locally, and only when you tap record. Read the full Privacy Policy.
On your iPhone, open Settings → tap your name (Apple ID) → Subscriptions → Hollow, and turn off auto-renew or cancel. Subscriptions stay active until the end of the current period. The Lifetime unlock is a one-time purchase, so there's nothing to cancel.