Privacy Policy
Sprocket City · Effective September 3, 2026
The short version: Sprocket City collects no personal information. There are no accounts, no sign-in, no ads, no third-party analytics, and no social features. Everything the game saves stays on the device it is played on unless a person chooses to export it.
What the game stores on the device
| Data | Where | Contains personal information? |
|---|---|---|
| Game progress: jobs completed, stars, sprockets, helper bot look, settings, daily goal and streak counters, and per-standard mastery counts (how many questions were answered and how many were right for each math standard) | Browser storage on the student's device | No. No name, birthdate, email, location, or identifier of any kind. |
| Class code (optional) | Same | No. A class code is a random string the teacher chooses to share. It carries class settings such as calm mode or Spanish. |
| Teacher roster (optional, teacher's device only) | Browser storage on the teacher's device | Only what the teacher types as a label. The app asks for initials or a first name only. The mastery data pasted into the roster contains no personal information (see below). |
Progress codes
A student can copy a "progress code" from the report screen and give it to a teacher. The code is a compressed copy of the mastery counts, minutes played, grade, and class code. It contains no name and no identifier. It is transferred by the people involved (for example by pasting into the teacher's device); the game never sends it anywhere.
What we do not do
- No collection of personal information from anyone, including children.
- No advertising of any kind, and no ad networks or trackers.
- No third-party analytics or crash-reporting software.
- No cookies for tracking. No external fonts or scripts.
- No in-app social features, chat, or user-generated content shared with others.
- No sale or sharing of data. There is no data to sell or share.
- No in-app purchases. Sprockets are earned only by answering questions.
Children's privacy (COPPA)
Sprocket City is designed for students in preschool through high school. Because the game collects no personal information from any user, it does not collect personal information from children under 13 as defined in the Children's Online Privacy Protection Rule (16 CFR Part 312), and no parental consent mechanism is required. Parents: your child's gameplay stays on the device they play on.
Schools (FERPA, California SOPIPA and Education Code 49073.1)
When a school uses Sprocket City, the school remains the owner of any student records. The game does not transmit student data to us. We do not use any information for targeted advertising, do not build profiles, and do not sell or disclose student information. A signed California Student Data Privacy Agreement is available for districts on request.
Read-aloud
The optional read-aloud feature uses the speech synthesis built into the device's browser. No audio or text is sent to us.
Network use
The game is delivered over the web (or installed as an app) and fetches only its own files from our hosting provider when online. These requests serve content only; we do not use them to identify or profile players. Once installed, the game works fully offline.
Deleting data
Use "Reset all progress" in Settings, remove a student from the roster on the teacher screen, clear the browser's site data, or uninstall the app. Any of these removes the data completely because there is no copy anywhere else.
Changes to this policy
If the game ever adds features that change what data is handled (for example an optional district sync), this policy will be updated first, the effective date above will change, and any new collection will require a signed district agreement and appropriate parental notice for users under 13.
Standards and attribution
Sprocket City tags each task with the code of the California mathematics standard it practices. For preschool and transitional kindergarten these are the California Preschool/Transitional Kindergarten Learning Foundations (California Department of Education, 2024). For kindergarten through Algebra 1 they are the California Common Core State Standards for Mathematics.
© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. The National Governors Association Center for Best Practices and the Council of Chief State School Officers are the sole owners and developers of the Common Core State Standards. Sprocket City is not affiliated with, endorsed by, or reviewed by either organization, or by the California Department of Education.
The game practices many of each grade’s standards, not all of them. The current count is published in the project’s coverage report.
Contact
Questions about privacy? Email support@sprocketcity.app. We answer within five working days.
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