What Jury Simulator does — and doesn't — collect.

Effective 7 May 2026 · Last updated 7 May 2026

Jury Simulator runs trials on your device. Most of what you do in the app — your voir dire answers, the conversations you have with jurors, your notes, your votes — never leaves your phone. This page explains the few exceptions and exactly what happens to that data.

What stays on your device

All trial dialogue is generated locally by an on-device model. That means:

Anything you type to a juror or write in your notebook is processed on the same phone you typed it on.
Your case history and verdicts are stored in a private local database that other apps cannot read.
We do not have a server that holds your gameplay. There is nothing for us to leak, sell, or be subpoenaed for.

What does leave your device

Model download

On first launch the app downloads the AI model (~3.65 GB) over HTTPS from a public model host (Google AI Edge). This is a one-time download. We do not run a server in the middle — the request goes directly from your device to the host.

AdMob ads

The app shows banner and occasional interstitial ads via Google AdMob to cover hosting costs. AdMob may collect:

Your advertising ID (resettable in Android settings)
Approximate location (country level, derived from your IP)
Device model, OS version, language, and similar non-identifying technical data

This data is governed by Google's Ads & Privacy Policy. You can limit personalized ads at any time in your Android device settings under Privacy → Ads → Reset advertising ID or Opt out of Ads Personalization. Jury Simulator will keep working — you'll just see less-relevant ads.

What we don't do

No third-party analytics. No Firebase, no Crashlytics, no Mixpanel, no Amplitude.
No account system. We don't ask you to sign up, sign in, or hand over an email.
No cross-app tracking. The only third party that sees anything is AdMob, and AdMob only sees ad-serving data — not your gameplay or notes.

Children

Jury Simulator depicts criminal trials and is not intended for children under 13. We do not knowingly collect data from children. If you believe a child has been served personalized ads, you can disable ad personalization at the OS level (above) or uninstall the app.

Permissions, in plain language

Internet & network state — to download the model and load ads.
Foreground service & notifications — to keep the model download running with a progress notification, then notify you when it finishes.

Changes to this policy

If we ever start collecting more data — for example, adding crash reporting — this page will be updated and the effective date above will change. The version of this policy that ships with each release is also archived in the public source repository.

Contact

Privacy questions, takedown requests, or just curious? Email charles.h.hartmann1@gmail.com.