Spirit Box – Privacy Policy
Last updated: October 12, 2026
Spirit Box is designed to respect your privacy. Your sessions, logs, and settings stay on your device. Spirit Box does not create user accounts and does not sell your data. The only information that leaves your device is described on this page.
What Spirit Box is
Spirit Box is an entertainment application. All words, sounds, and readings produced by the app are generated algorithmically and are not evidence of spirits, hauntings, ghosts, or communication with the deceased. The app makes no claim, express or implied, of genuine paranormal detection or communication.
The EMF meter displays real-time readings from your device's magnetometer sensor, which responds to ordinary magnetic sources such as electronics and metal objects. It is not a paranormal detection instrument.
Spirit Box is a game, not a counseling or mediumship service. If you are exploring grief or loss, please keep that distinction in mind, and consider speaking with a qualified counselor or support service instead. You use the app at your own discretion and risk.
What Spirit Box collects
Spirit Box is developed and operated by Foster Apps LLC. The app stores your session logs, readings, and settings on your device only.
Spirit Box does not:
- Sell your data.
- Require an account or email address.
- Store your session data on any Foster Apps server.
Ads
Spirit Box shows ads served by Google AdMob to support the free version of the app. On iOS, the app will ask for your permission via Apple's App Tracking Transparency prompt before using tracking data for ad personalization. If you decline, or on regions where consent is required, you'll still see ads, but they won't be personalized to you.
AdMob and its ad network partners may collect device identifiers and usage data to serve and measure ads. This data is handled under Google's own privacy policy, available at policies.google.com/technologies/partner-sites.
Spirit Box Pro subscribers do not see ads, and no ad SDK activity occurs for Pro accounts.
How voice detection and the EMF meter work
If you enable voice detection, audio is processed entirely on your device to detect speech activity and is never recorded, stored, or transmitted off your device. The EMF meter reads your device's built-in magnetometer directly on-device. Neither feature sends data to Foster Apps or any third party.
On-device storage
Your session logs, readings, and settings are stored locally on your device. This data is not synced to iCloud or any Foster Apps server. Uninstalling the app or clearing app data will permanently remove it.
AI-generated words
To keep sessions fresh, Spirit Box may request a short batch of words when a session starts. The request goes to a Foster Apps service, which uses a third-party AI service (Google Gemini) to generate the words. It contains only the app's language setting and the random identifier described under Analytics & Diagnostics. It never includes your voice, microphone audio, speech transcripts or your questions, which are processed on your device only. Generated words are filtered before use. If the request fails, the app uses words stored on your device.
Anonymous usage and error reports
Spirit Box sends a small number of anonymous events to a Foster Apps service, such as the first time the app is opened, when you reach the paywall, when a purchase completes, and when an error occurs. Error reports include the error message, technical details of where it happened, and the app version. Events are tied only to a random identifier created when you install the app. They contain no name, email, advertising identifier, location, microphone audio, or the content you create in the app, and they are used only to understand how the app is used and to fix bugs.
In-app purchases
Spirit Box Pro is available as a subscription through Apple's App Store. All billing is handled by Apple. Spirit Box never sees your payment details. Subscription management and cancellation are handled through your Apple ID settings.
Support email
When you email support at support@fosterapps.com, the contents of your email are stored in your email provider's systems.
Changes to this policy
This policy may be updated as Spirit Box evolves. When it changes, the "Last updated" date at the top of the page will be revised. Significant changes may also be mentioned in release notes.
Questions
If you have any questions about this policy or how Spirit Box handles your data, contact:
Email: support@fosterapps.com