๐น Martraw Privacy Policy
Effective Date: February 2025 | Last Updated: February 6, 2025
Summary: Martraw collects location, camera, and health data solely to provide the game experience. We do not sell your personal data. You can delete your data at any time.
1. Introduction
N.THING Inc. ("Company," "we," "us," or "our") operates Martraw ("App"), a location-based grocery shopping gamification application. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our App.
By using Martraw, you agree to the collection and use of information in accordance with this policy.
2. Information We Collect
2.1 Information You Provide
- Profile Information: Nickname, avatar selection
- User Content: Notes added to collected items
2.2 Information Collected Automatically
| Data Type |
Purpose |
Storage |
| Location Data |
Detect store entry/exit, show nearby hunting grounds |
Device only (not uploaded to servers) |
| Camera Data |
Scan product barcodes, recognize food items via photo, scan receipts |
Processed locally or via AI service, not permanently stored |
| Health Data (via Apple HealthKit) |
Track step count for missions |
Read-only, stays on device |
| Device Identifiers |
Analytics, leaderboard identification |
Anonymized |
| Usage Data |
App improvement, feature analytics |
Aggregated, anonymized |
2.3 Information We Do NOT Collect
- Real name, email address, phone number (no account required)
- Payment or financial information
- Contacts or address book
- Background location (only when app is in use)
2.4 AI-Powered Image Analysis
When you use the food photo recognition or receipt scanning features, captured images may be sent to a third-party AI service (Anthropic Claude API) for analysis. Images are:
- Transmitted securely via HTTPS
- Used solely for real-time food recognition or receipt parsing
- Not stored by the AI service after processing
- Not used for AI model training
If your device is offline, only on-device (local) analysis is performed.
3. How We Use Your Information
- Provide and maintain the App's core features
- Detect when you enter/exit hunting grounds (stores)
- Track mission progress and achievements
- Display store-specific leaderboards
- Recognize food items and parse receipt data
- Generate usage statistics to improve the App
- Respond to customer support requests
4. Data Sharing and Disclosure
We do NOT sell your personal data.
We may share information only in these limited circumstances:
- Service Providers: Third-party services that help us operate the App (e.g., analytics providers like Firebase, AI services like Anthropic), under strict confidentiality agreements
- Legal Requirements: When required by law or to protect our rights
- Business Transfers: In connection with a merger, acquisition, or sale of assets
5. Data Storage and Security
- Most data is stored locally on your device
- Cloud-synced data (leaderboards, achievements) is encrypted in transit and at rest
- We use industry-standard security measures
- No system is 100% secure; we cannot guarantee absolute security
6. Your Rights and Choices
6.1 All Users
- Access: View your data within the App's Profile section
- Delete: Delete your profile and all associated data in Settings
- Permissions: Revoke location, camera, or health permissions in your device settings at any time
6.2 European Users (GDPR)
If you are in the European Economic Area, you have additional rights:
- Right to access, rectify, or erase your personal data
- Right to data portability
- Right to object to or restrict processing
- Right to withdraw consent
Contact us at martraw@nthing.net to exercise these rights.
6.3 California Users (CCPA)
California residents have the right to:
- Know what personal information is collected
- Request deletion of personal information
- Opt-out of the sale of personal information (we do not sell data)
- Non-discrimination for exercising privacy rights
6.4 Korean Users (๊ฐ์ธ์ ๋ณด๋ณดํธ๋ฒ)
ํ๊ตญ ์ด์ฉ์์ ๊ถ๋ฆฌ๋ ํ๊ตญ์ด ๊ฐ์ธ์ ๋ณด์ฒ๋ฆฌ๋ฐฉ์นจ์ ์ฐธ์กฐํ์ธ์.
7. Children's Privacy
Martraw is rated 4+ and is suitable for all ages. We do not knowingly collect personal information from children under 13 (or applicable age in your jurisdiction). The App does not require account creation or personal details.
8. International Data Transfers
We are based in South Korea. If you access the App from outside South Korea, your information may be transferred to and processed in South Korea or other countries where our service providers operate. We ensure appropriate safeguards are in place for such transfers.
9. Data Retention
- Local Data: Retained until you delete the App or clear data
- Cloud Data: Retained while your profile is active; deleted within 30 days of account deletion request
- Analytics Data: Aggregated data may be retained indefinitely in anonymized form
10. Third-Party Services
The App may use the following third-party services:
11. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy in the App and updating the "Last Updated" date. Continued use of the App after changes constitutes acceptance of the updated policy.
12. Contact Us
ยฉ 2025 N.THING Inc. All rights reserved.