MamaFi Privacy Policy
Last Updated: April 2026
This Privacy Policy applies to the Memeth mobile application ("App"), operated by MamaFi Ltd ("MamaFi", "we", "us").
MamaFi is committed to protecting your privacy and ensuring transparency in how your data is collected, used, and protected.
1. Data Controller
MamaFi Ltd
71-75 Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom
Company Number: 16470954
ICO Registration Number: ZB904632
Email: privacy@mamafi.io
2. Information We Collect
2.1 Information You Provide
- Phone number (OTP verification)
- Username, profile info, avatar
- Posts, media (photos, videos, audio)
- Chat messages
- Voice messages
- Subscription data (via Stripe)
2.2 Automatically Collected Data
- Device identifiers and user-agent
- IP address
- Usage and engagement metrics
- Push notification tokens (FCM)
- Crash and performance logs (Sentry)
2.3 Blockchain Data
- Wallet address
- Transaction history (public blockchain)
- Crypto activity (immutable)
3. App Store Data Disclosure (Apple)
| Category | Data | Collected | Linked | Tracking |
|---|---|---|---|---|
| Contact Info | Phone Number | Yes | Yes | No |
| Contact Info | Username | Yes | Yes | No |
| User Content | Posts / Media | Yes | Yes | No |
| User Content | Chat Messages | Yes | Yes | No |
| User Content | Voice Messages | Yes | Yes | No |
| Identifiers | Device ID | Yes | Yes | No |
| Financial | Payments (Stripe) | Yes | Yes | No |
| Usage | Engagement Data | Yes | Yes | No |
| Diagnostics | Crash Logs | Yes | No | No |
| Other | IP Address | Yes | Yes | No |
| Other | Wallet Address | Yes | Yes | No |
| Location | Location Data | No | N/A | N/A |
4. How We Use Your Data
- Account authentication (OTP)
- Messaging and social features
- Crypto wallet functionality
- Payments and subscriptions
- Push notifications
- Security and fraud prevention
- Product improvement
5. Information Sharing (Google Data Safety Aligned)
| Data | Shared With | Purpose | User Control |
|---|---|---|---|
| Phone | sms.to | OTP verification | Required |
| Media | AWS S3 | Storage | Yes |
| Voice Messages | AWS S3 | Storage | Yes |
| Payments | Stripe | Billing | Required |
| Device Tokens | Firebase | Notifications | Opt-out |
| IP / Logs | Sentry | Security | No |
Opt-Out
- Disable push notifications (device settings)
- Delete account (full data removal within 30 days)
6. Data Retention
| Data | Retention |
|---|---|
| Phone number | Account + 30 days |
| Profile data | Account + 30 days |
| Posts/media | Until deleted |
| Chat messages | Account + 30 days |
| Voice messages | Account + 30 days |
| Payments | 7 years (Stripe/legal) |
| IP address | 90 days |
| Logs (Sentry) | 30 days |
| FCM tokens | Until account deletion |
| Usage data | 12 months |
| Blockchain | Permanent |
7. Security
- TLS encryption (in transit)
- AES-256 encryption (wallet keys)
- End-to-end encrypted chats
- Secure infrastructure (AWS, EU hosting)
8. International Data Transfers
Data may be processed outside your country with appropriate safeguards (GDPR SCCs).
9. Tracking and Cookies
This App does not track users across third-party apps or websites. We do not use IDFA, GAID, or advertising SDKs.
10. Your Rights
- Access and correction
- Deletion
- Data portability
- Restriction of processing
- Delete account via: Settings > Privacy > Delete Account
11. Device Permissions
Camera, microphone, storage, and notifications are all optional and user-controlled.
12. Cryptocurrency and Wallet Disclosure
- Users do not directly hold private keys
- Keys are encrypted and securely stored
- Blockchain transactions are irreversible and public
- MamaFi is not a financial institution and provides no investment advice
13. Children's Privacy
- The App is not intended for users under 18.
- No automated age verification is implemented.
- Users confirm their age during registration.
- Parents/guardians can contact privacy@mamafi.io if needed.
14. Changes to Policy
We may update this policy and notify users.