Privacy Policy

Lethal Arts · ShopMath & KitchenMath · Effective: January 1, 2025

The short version: we don't collect, store, or transmit your personal data. Everything you enter stays on your device.

What we collect

Nothing. All calculations, history, and settings are stored locally on your device. We have no servers, no accounts, and no analytics SDK in our apps.

Purchases

If you purchase a Pro upgrade, the transaction is handled entirely by Google Play (Android) or the App Store (iOS). We receive only a confirmation that the purchase was made — we never see your name, payment method, or billing details.

Ads (free tier only)

Free users see banner ads served by Google AdMob. AdMob may collect device identifiers and usage data to serve relevant ads. This data collection is governed by Google's Privacy Policy.

You can limit ad tracking or opt out of personalized ads in your device settings:

  • Android: Settings → Google → Ads → Delete advertising ID
  • iOS: Settings → Privacy & Security → Tracking → disable "Allow Apps to Request to Track"

Pro users see no ads and AdMob is not active.

What we don't do

  • We don't collect your name, email address, or location
  • We don't use third-party analytics (no Firebase, no Mixpanel, no Crashlytics)
  • We don't share data with third parties because we don't have any
  • We don't sell your data

Children

Our apps are not directed at children under 13. We do not knowingly collect any information from children.

Changes to this policy

If we ever change how our apps handle data, we will update this page and revise the effective date above. Given that we collect nothing, we don't anticipate meaningful changes.

Contact

Questions about this policy? Email us at support@mathapps.pro.