Privacy Policy & Terms
What data we collect
Financial data (transactions, accounts, budgets): stored entirely on your device. Erisai does not transmit this data to any Erisai-controlled server.
Google account information: when you sign in with Google, we receive your Google display name, email address, and profile photo. This is used only to personalise your experience. We do not share it with any third party.
Usage analytics: none. Erisai does not use any analytics SDK, session recording, or behavioural tracking.
Error reporting: none currently. We may add opt-in crash reporting in a future version — you will be asked explicitly before it's enabled.
How your data is stored
All financial data (transactions, account balances, categories, budgets, recurring items) is stored in localStorage on your device, keyed by your email address. It never leaves your device unless you explicitly enable Google Drive sync.
When you enable Drive sync, your data is written to a file in your own Google Drive account. Erisai reads and writes that file using a token you grant. The file is named float_data.json and sits inside Erisai's private app folder — it is not visible to other apps unless you explicitly share it.
We do not maintain copies, backups, or snapshots of your data on Erisai's infrastructure.
Google sign-in and Drive
Erisai uses Google OAuth 2.0 for authentication and Google Drive API (drive.file scope) for optional cloud backup. When you sign in:
- We request your basic profile (name, email, photo) and, if you enable sync, access to files created by Erisai in your Drive.
- We never request access to your full Drive, Gmail, or other Google services.
- You can revoke Erisai's Google access at any time from myaccount.google.com/permissions.
Erisai's use of Google APIs complies with the Google API Services User Data Policy, including the Limited Use requirements.
Third-party services
Erisai uses the following external services:
- Frankfurter API (api.frankfurter.app): fetches live exchange rates from the European Central Bank. No personal data is sent — only the currency pair request.
- Google Fonts: loads Poppins and JetBrains Mono typefaces. Google's standard font privacy policy applies.
- Xendit (Pro subscribers only): handles payment processing for Pro subscriptions. Xendit's privacy policy governs payment data — Erisai does not store card numbers or payment credentials.
No advertising networks, tracking pixels, or social media SDKs are included in Erisai.
Children
Erisai is not directed at children under 13. We do not knowingly collect personal data from children. If you believe a child has provided personal data, contact us and we will delete it.
Terms of use
By using Erisai, you agree to the following terms.
Beta software: Erisai is in active development. Features may change, be removed, or be temporarily unavailable. We make no guarantee of data persistence during the beta period — always maintain your own backup via Google Drive sync.
Acceptable use: Erisai is for personal financial tracking. Do not use it for illegal activities, financial fraud, or any purpose that violates applicable Indonesian law.
No financial advice: Erisai is a journaling and tracking tool. Nothing in the app constitutes financial advice, investment advice, or tax advice. Consult a qualified professional for those needs.
Intellectual property: Erisai's code, design, and branding are the property of Aida Creative Lab. You may not copy, redistribute, or create derivative products without written permission.
Liability: Erisai is provided as-is. Aida Creative Lab is not liable for any financial loss, data loss, or damages arising from the use of Erisai during the beta period.
Changes: We may update these terms. Material changes will be communicated via the app or our Instagram. Continued use after notice constitutes acceptance.
Contact
Questions about privacy or these terms? Reach us at erisai.app@gmail.com, on WhatsApp, or DM us on Instagram.
Aida Creative Lab · Surabaya, East Java, Indonesia · Effective date: 29 April 2026