Legal
Privacy Policy
Effective date: March 31, 2026 · Last updated: October 4, 2026
1. Information We Collect
ShoeSizeBook collects only the data necessary to provide a family shoe and clothing size tracker. We collect:
| Data | Linked to You? | Purpose |
|---|---|---|
| Email address | Yes | Account authentication |
| Display name | Yes | Family member identification |
| Purchase history | Yes | Premium purchase status |
| Crash & performance data | Yes | App stability and performance |
| Usage data (which features you use, never the sizes, names or notes you enter) | Yes | Understanding and improving the app |
2. How We Use Information
- Authenticate your account and maintain your session
- Store and sync family members' size data across devices
- Keep your Premium status in step across web and mobile
- Monitor app stability and fix crashes
- See which features are used so we can improve them
3. Third-Party Services
We use the following third-party services to operate ShoeSizeBook:
| Service | Data Accessed | Purpose |
|---|---|---|
| RevenueCat | Purchase receipts, purchase status | Mobile Premium purchases |
| Dodo Payments | Payment information | Web Premium purchases |
| Better Auth | Email, session tokens | Authentication |
| Convex | User-entered content | Backend data sync |
| PostHog | Account ID, email, feature usage events, crash reports, device and browser type | Product analytics and error monitoring. Stores no cookies on the website. |
| Expo Updates | Device metadata (OS, app version) | Over-the-air updates |
4. Children's Privacy
ShoeSizeBook is a family-oriented app where parents and guardians manage size data for their household, which may include children. All data is entered and managed by the account holder (parent or guardian). We do not knowingly collect personal information directly from children under 13. If you believe a child has provided us with personal information without parental consent, please contact us so we can remove it.
5. Data Retention & Deletion
Your data is retained for as long as your account is active. You can delete your account at any time from the Settings screen, which permanently removes all your data including family members, size measurements, and purchase records.
6. Data Security
All data transmitted between your device and our servers is encrypted using HTTPS/TLS. Your data is stored securely on our cloud backend (Convex). While no system is 100% secure, we take reasonable measures to protect your information.
7. What We Don't Do
- We do not display ads
- We do not track you across other apps or websites
- We do not sell or share your data with data brokers
- We do not use your data for advertising or marketing purposes
8. Your Rights
Depending on your location, you may have the right to:
- Access the personal data we hold about you
- Request correction of inaccurate data
- Request deletion of your data
- Export your data in a portable format
To exercise any of these rights, delete your account from Settings or contact us at the address below.
9. Changes to This Policy
We may update this Privacy Policy from time to time. When we make significant changes, we will notify you through the app or by email. Continued use of ShoeSizeBook after changes constitutes acceptance of the updated policy.
10. Contact Us
If you have questions about this Privacy Policy or your data, contact us at:
PimSpace
Email: support@shoesizebook.com