Privacy Policy

Introduction

Roll & Tell ("we", "us", "our") is committed to protecting your privacy. This policy explains what information Roll & Tell collects, how it is used, and what choices you have. Roll & Tell is an offline educational app — every lesson, simulator, formula, and glossary entry is bundled with the app itself. The app makes no network requests during normal use.

This policy applies to the Roll & Tell application (package com.probability0025.learn) available at probability0025.com.

Information We Collect

A bundled privacy plugin handles attribution and install tracking on first launch. The plugin collects the following data on behalf of Roll & Tell:

Google Advertising ID (GAID) / Identifier for Advertisers

The Google Advertising ID is a device-level, resettable identifier provided by Google Play Services. We collect it for install attribution — to understand which advertising campaigns result in app installs. You can reset your GAID or opt out of ad personalization at any time through your device settings under Privacy → Ads. Learn more at policies.google.com/technologies/ads.

User ID

An anonymous, device-scoped identifier (UUID) is generated on first launch and stored locally. It helps us distinguish unique installs in aggregate analytics. This identifier is not linked to any personally identifiable information and is never shared with advertising networks.

Firebase Cloud Messaging (FCM) Token

An FCM token is collected only if you explicitly enable the optional daily reminder notification. Notifications are off by default; the app never activates them without your action. These reminders are delivered as local scheduled notifications — they do not originate from our servers. The FCM token is used solely to support notification delivery infrastructure; we do not use it to send marketing messages.

Device Information

We collect basic technical information about your device, including:

• Device model and manufacturer
• Operating system version
• Language and country/locale settings
• App install timestamp

This information is used for attribution reporting and anonymous, aggregated analytics (for example, understanding which device generations the app runs well on).

Data We Do Not Collect

The following data is never collected by Roll & Tell:

• Photos, camera, or microphone access
• Contacts, calendar, or health data
• Precise or approximate location
• Your lesson progress, quiz answers, or knowledge-check results
• Saved Sandbox experiments or custom configurations
• Favorited Daily Insights or in-app preferences

All of the above is stored exclusively on your device using a local database (Drift / SQLite). We never see it, never transmit it, and never have access to it.

How We Use Information

The limited data we collect is used for the following purposes:

• Install attribution: Determining which acquisition channels (e.g., Google Ads, organic search) bring users to the app, so we can make informed decisions about where to promote it.
• Install tracking: Counting unique installs and re-installs to understand the app's reach.
• Optional notifications: Delivering the once-per-day local reminder you have chosen to enable.
• App improvement: Reviewing anonymous, aggregated device and locale data to prioritize compatibility and localization work.

We do not use your data to build advertising profiles, sell it to data brokers, or make any automated decisions that affect you.

Data Sharing with Third Parties

We do not sell your personal data. The following third-party services may receive the data described above as part of their core function:

• Google Play Services — provides the GAID framework and app distribution infrastructure. Privacy Policy
• AppsFlyer — mobile attribution and marketing analytics. Privacy Policy
• Firebase / Google Analytics for Firebase — analytics aggregation and FCM notification infrastructure. Privacy Policy
• AppMetrica (Yandex) — supplementary install analytics. Privacy Policy
• OneSignal — notification delivery (only if you have enabled reminders). Privacy Policy

Each third party operates under its own privacy policy and data-processing agreements. We encourage you to review those policies if you have questions about how they handle data.

Data Retention

Aggregate analytics data is retained for as long as Roll & Tell is in active distribution. Attribution identifiers are retained in accordance with the data-retention policies of the third-party services listed above.

If you would like to request deletion of any identifiers tied to your device, please email us at [email protected] with the subject line "Data Deletion Request". We will process your request and coordinate with relevant third parties within 30 days.

Your Rights (GDPR / CCPA)

Depending on your jurisdiction, you may have the following rights with respect to your personal data:

• Access: Request a copy of the personal data we hold about your device.
• Rectification: Request correction of inaccurate data.
• Erasure: Request deletion of your data ("right to be forgotten").
• Portability: Receive your data in a structured, machine-readable format.
• Restriction: Ask us to restrict processing of your data while a complaint is resolved.
• Objection: Object to processing based on legitimate interest.
• Withdrawal of consent: Withdraw consent at any time where processing is consent-based.

To exercise any of these rights, contact us at [email protected]. California residents may also submit requests under the CCPA by the same email address. We will respond within the timeframe required by applicable law.

Children's Privacy

Roll & Tell is rated Teen on Google Play (with an educational gambling-references disclosure) and 17+ on the Apple App Store, owing to the educational discussion of probability concepts derived from gambling mathematics. The app does not contain games of chance, betting mechanics, or promotional content for any operator.

We do not knowingly collect personal data from children under the age of 13 (or under 16 where applicable under GDPR). If you believe a child has provided information to us, please contact us at [email protected] and we will promptly delete it.

Educational Note About Gambling-Adjacent Content

Roll & Tell is an educational app about probability and statistics. It uses gambling-derived examples — dice, coins, probability wheels, lottery odds, card combinatorics — strictly as classroom mathematical props. The app does not facilitate gambling, does not promote any operator, and contains no betting tools or real-money transactions. Lessons 10 and 11 discuss the mathematics of house edge and lottery expected value as cautionary, informational content: they explain why the math systematically favors the house, not as a strategy guide.

Changes to This Policy

We may update this Privacy Policy from time to time as the app evolves or as legal requirements change. When we do, we will revise the "Last Updated" date at the top of this page. We encourage you to review this page periodically. Continued use of the app after changes are posted constitutes your acceptance of the revised policy.

Contact Us

For any questions or concerns about this Privacy Policy or our data practices, please reach out:

• Email: [email protected]
• Contact form: Contact form