Privacy Policy
Last updated: 1 October 2026
In short: OyenKu has no accounts and no bank connection. Your financial data stays on your device, encrypted. We don't collect it, see it or sell it.
Who we are
OyenKu is made by Sarveka Labs Sdn. Bhd. ("we", "us"), a company in Malaysia. You can reach us at hello@oyenku.com.
What stays on your device
Everything you enter — your name, accounts, balances, history, targets, notes, estate notes and insurance policies — is stored in an encrypted database on your phone. The encryption key is kept in your device's secure storage. We have no copy and no way to access it.
What leaves your device, and when
- Purchases: the App Store or Google Play handles payment. RevenueCat, the service we use to confirm OyenKu Pro, receives an anonymous app user ID, your purchase and subscription history, and basic device and app information (such as the operating system, app version and store country). It never receives your balances, accounts or name.
- Exchange rates: only if you have, or are adding, an account in another currency, the app downloads the day's reference rates from api.frankfurter.dev (European Central Bank data). The request contains currency codes only. Like any internet request, the service can see your IP address.
- Things you choose to share: backup files, the estate PDF, Excel downloads and share images leave your phone only when you share them, and only to where you send them.
- Feedback: if you email us from the app, your mail app opens a message that includes the app version, phone model, operating system, language and whether you use Free or Pro. You can see and edit it before sending.
What we don't do
- No account, sign-up or bank connection.
- No advertising and no tracking, and no analytics on how you use the app or on your finances. We only see anonymous purchase figures in RevenueCat, such as how many people subscribe.
- No location, contacts or photos access.
- We never sell or share your data.
App Lock and reminders
App Lock uses your phone's Face ID, fingerprint or passcode. That check happens in your phone's operating system; OyenKu never receives biometric data. Monthly reminders are scheduled on your phone and contain no amounts.
Keeping and deleting your data
Your data stays on your phone until you delete it. Settings › Reset OyenKu deletes everything; uninstalling the app does too. Because we hold no copy, we can't recover it for you — keep a backup if you need one. Emails you send us are kept only as long as needed to help you.
Your rights
Under Malaysia's Personal Data Protection Act 2010 you may ask to access or correct personal data we hold about you. Since your financial data never reaches us, you manage it directly in the app. For anything else, contact hello@oyenku.com.
Children
OyenKu is not directed at children under 13.
Changes
If this policy changes, we'll update this page and the date above. This policy is available in English and Bahasa Melayu.