Privacy Policy
This policy explains how the FinJai mobile app handles your information. We've built FinJai with a simple principle: your data is yours and yours alone — nobody else gets to see it.
The short version: FinJai does not collect, transmit, or share any of your data. Everything stays on your device.
1Who we are
FinJai is developed and operated by Merman Studio, an independent app studio operated by Chatsuda Sookjam in Thailand. For any questions about this policy, contact us at support@merman.studio.
2What the app stores
FinJai stores only the information you enter yourself, including:
- Income, expense, and savings transactions you record
- Categories, budgets, and goals you create
- Profile name, profile photo, and preferences (language, theme, currency)
- Your PIN code and lock settings (stored as a SHA-256 hash, never as plain text)
All of this data lives on your device only, using standard browser storage (localStorage). It is never sent to a server, the developer, or any third party.
3What we don't do
For complete clarity, FinJai does not:
- ❌ Require accounts or sign-ups
- ❌ Send data to any server or cloud
- ❌ Use analytics or usage tracking
- ❌ Use crash reporting tools
- ❌ Sell or share data with third parties
- ❌ Display targeted advertising
- ❌ Access your location, contacts, or device identifiers
4Backups and exports
FinJai includes Export/Import features that let you save a backup file (.json) of your data. This file:
- Is saved to your own device — you control it 100%
- Can be stored anywhere you choose (iCloud, Google Drive, email, etc.)
- Is never seen or stored by FinJai
5Your rights
Because all data lives on your device, you have full control at all times:
- Access: View your data in the app any time
- Correct: Edit any entry whenever you want
- Delete: Remove individual entries or wipe everything
- Portability: Export your data as a .json file
- Erasure: Uninstalling the app permanently removes all stored data
6Children's privacy
FinJai is suitable for users of all ages but is not specifically designed for children under 13. Because the app does not collect any data, there are no privacy concerns specific to minors.
7Changes to this policy
If we make changes in the future (for example, when introducing optional cloud sync), we'll notify you through the app and update the "Last updated" date above. Continued use after changes means you accept the updated policy.
8Governing law
This policy is governed by the laws of Thailand, including the Personal Data Protection Act B.E. 2562 (PDPA). Users in other regions may also have rights under their local laws (such as GDPR in Europe and CCPA in California) — these are respected by default since we collect no data.
9Contact us
For any questions, concerns, or requests related to this policy:
Email: support@merman.studio
Developer: Merman Studio
Operator: Chatsuda Sookjam
Country: Thailand