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Privacy Policy

Last updated: 7 October 2026

Introduction

This Privacy Policy explains how Tripwire Tech (“we”, “us”, or “our”) handles information in Maths For Kids, 50 First Foods, Castle Adventure Chess, and other apps that link to this page.

App-specific policies also exist for some products:

If you have questions, contact chelsea@tripwiretech.com.

Maths For Kids, Castle Adventure Chess, and 50 First Foods

Maths For Kids is a maths learning app for children. Play does not require creating an account with Tripwire Tech.

Castle Adventure Chess is a chess learning app for children. Progress and parent settings stay on the device; play does not require a Tripwire Tech account.

50 First Foods is a baby first foods tracker for starting solids. Food attempts, notes, meal plans, and related entries stay on the device; tracking does not require a Tripwire Tech account.

Information you or a parent create in these apps (for example child profiles, progress, or food tracking) is stored locally on your device. We do not operate a cloud account for that content. These apps do not sell personal information.

Information We Collect

Unless an app-specific policy says otherwise:

  • The apps that use this page do not collect, transmit, or sell personal information to Tripwire Tech for advertising profiles.
  • Information you enter is stored locally on your device (for example in an on-device database).
  • Where an app shows ads, Google AdMob may collect limited device information as described in Advertising (Google AdMob) below. Tripwire Tech does not receive that information in a form that identifies you.

Local Storage

Data remains on your device unless you choose to delete the App or clear its data. The developer does not have access to on-device diary or learning progress unless you deliberately send it (for example by email for support).

Analytics and Tracking

Unless an app-specific policy says otherwise, apps covered by this page:

  • Do not use analytics for marketing profiling
  • Do not share your on-device learning, tracking, or journal content with advertisers or other third parties for their marketing
  • Do not track you across other companies’ apps and websites unless you give permission (see iPhone tracking permission below)

Advertising (Google AdMob)

Some apps covered by this page are free and show ads provided by Google AdMob (the Google Mobile Ads SDK). Where an in-app purchase to remove ads is offered, buying it stops ads in that app.

To serve and measure ads and to prevent fraud, Google may collect information such as:

  • Your IP address and approximate location derived from it
  • Device type, operating system, language, and app version
  • Advertising identifiers (the Google Advertising ID on Android, and on iPhone the Identifier for Advertisers (IDFA), only if you allow tracking)
  • Ad interactions such as views and taps

What you enter in the app is never sent to advertisers. Ad requests do not include child profiles, learning progress, food tracking, notes, or anything else you record in the app.

Apps for children

Apps designed for children (such as Maths For Kids and Castle Adventure Chess) that show ads request ads as child-directed. In these apps, ads are not personalised, advertising identifiers are not used for interest-based advertising, and the iPhone tracking permission prompt is not shown. Ad content is limited to ads suitable for children under Google’s families and child-directed policies.

Your choices

  • Consent (EEA, UK, Switzerland, and other regions where required): where required, the app shows Google’s consent form before personalised ads are used. Where the app offers it, you can change your choice later in the app’s settings.
  • iPhone tracking permission: in apps that are not directed at children, iOS may ask whether the app can track your activity across other companies’ apps and websites. If you choose “Ask App Not to Track”, the IDFA is not shared and you will still see ads, but they will be less personalised. You can change this at any time in iOS Settings › Privacy & Security › Tracking.
  • Android: you can reset or delete your advertising ID in your device’s Google settings.

Google processes this information under its own policies:

Permissions

The App only requests permissions required for its functionality. If additional permissions are added in future releases, this policy will be updated.

Children’s Privacy

Maths For Kids and Castle Adventure Chess are designed for young learners with parent or carer guidance. We do not knowingly collect personal information from children on Tripwire Tech servers. Profile and progress data stay on the device. Where these apps show ads, they are requested as child-directed and non-personalised, as described in Apps for children.

Data Security

Because your data is stored only on your device by default, you are responsible for protecting access to your device.

Changes to This Policy

This Privacy Policy may be updated from time to time. Changes will be reflected by updating the “Last updated” date.

Contact

If you have questions about this Privacy Policy, contact chelsea@tripwiretech.com or use the contact details on the App Store / Google Play listing.