Privacy Policy

Last updated: April 24, 2026 · Sudohnim

Sudohnim ("we", "our", or "us") builds mobile apps. This Privacy Policy explains how we handle information across all of our products. We believe in collecting as little data as possible — only what's strictly necessary to deliver the app experience.

1. Who This Covers

This policy applies to all apps published by Sudohnim, including:

Stance Lab — a drill training app for wrestlers (iOS and Android)

As we publish additional apps, they will be listed here and covered by this policy.

2. What We Collect

We do not require accounts. We do not collect your name, email address, or any information that identifies you personally.

The following limited data is collected across our apps:

Anonymous user ID — a randomly generated identifier stored locally on your device. Used to track purchase status via RevenueCat. Not linked to your identity in any way.
Purchase history — if you make an in-app purchase, transaction data (product ID, purchase date, entitlement status) is processed by RevenueCat and the relevant app store (Apple or Google) to verify and restore your purchase.
Device identifiers — standard identifiers used by Apple App Store and Google Play as part of their in-app purchase infrastructure.

3. How We Use It

To verify and restore purchases across devices.
To unlock features tied to your purchase entitlement.

We do not use any data for advertising, analytics, profiling, or any purpose beyond delivering core app functionality.

4. App-Specific Notes

Stance Lab

Speech synthesis — the app uses your device's built-in text-to-speech engine to call out drill cues. This runs entirely on-device. No audio is recorded, transmitted, or stored.
No health data — the app does not access or store any health or fitness data from your device.

5. Third-Party Services

RevenueCat — we use RevenueCat to manage in-app purchases and entitlement status across all our apps. RevenueCat receives your anonymous user ID and purchase data. See RevenueCat's Privacy Policy.

Apple App Store / Google Play — purchases are processed by Apple or Google. Their privacy policies govern how payment and transaction data are handled.

6. Data Retention

Your anonymous user ID is stored on your device and persists until you delete the app. RevenueCat retains purchase records per their own data retention policies. We do not maintain any independent user database.

7. Children's Privacy

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

8. Your Rights

Because we don't collect personal information tied to your identity, there is no personal data to access, correct, or delete on our end. To reset your anonymous user ID, delete and reinstall the app. For data held by RevenueCat, Apple, or Google, contact those services directly.

9. Changes to This Policy

We may update this policy as we ship new apps or change our data practices. The "last updated" date above will always reflect the most recent version. Continued use of our apps constitutes acceptance of the updated policy.

10. Contact

Questions? Reach us at minh.v.mai@gmail.com