1. Who is responsible for your data
Viwa is operated by Saeed Abdi. For any question about your personal data you can reach us through any of the following:
- Provider: Saeed Abdi
- Address: Sohrevard
- Phone: +98 999 986 0716
- Email: support@viwapp.ir
2. Information we collect
We only collect what the service needs to work:
- Account information: your email address, display name, and a profile picture if you choose to add one. Your password is stored hashed and is never kept in readable form.
- Learning data: the words and idioms you save, your Leitner box state, the videos you have watched, and your progress.
- Payment information: product id, purchase token, store name (Cafe Bazaar or Myket), amount, and transaction status. Your bank card details are never sent to Viwa.
- Technical information: app version, device type and operating system, and usage events such as opening the app or starting a lesson.
- Notification token: if notifications are enabled, a Firebase Cloud Messaging token is stored so we can deliver messages to your device.
- Institute code: if you reached Viwa through a language school, the link between your account and that institute is recorded.
3. How we use it
The data we collect is used only for these purposes:
- Creating and managing your account and signing you in
- Storing and syncing your learning progress and Leitner box across devices
- Activating and managing your subscription and validating purchases
- Sending learning-related notifications, such as review reminders
- Fixing bugs, improving app performance, and deciding what content to add next
- Responding to your support requests
4. Payments
Viwa subscriptions are purchased through the in-app billing systems of Cafe Bazaar or Myket. The entire payment flow happens on that store's platform: your card number, second password, or CVV2 are never made available to Viwa and are never stored on our servers. We only receive the transaction result and a purchase token so we can activate your subscription. Those stores' own privacy practices are governed by their policies.
5. Usage analytics
To understand which parts of the app help and where people get stuck, we use analytics tooling:
- PostHog, for usage events such as app opens, screen views, and lesson starts
- Firebase Cloud Messaging, for delivering notifications
- We do not sell your personal information to ad networks and we do not use it for advertising targeting.
7. How long we keep it
Your account and learning data is retained while your account is active. After you request deletion, your personal data is deleted or anonymised within 30 days at most — except financial transaction records, which may be retained for the period required by applicable tax and accounting law.
8. Security
Traffic between the app and our servers is encrypted (HTTPS), passwords are stored hashed, and staff access to user data is limited and controlled. No system is completely secure, however; if a breach ever puts your data at risk, we will notify you as quickly as possible.
9. Your rights
At any time you can:
- Access your account information and edit your name and profile picture from inside the app
- Request a copy of your data
- Request full deletion of your account and data
- Turn notifications off from your device or app settings
10. Users under the legal age
Viwa is designed for intermediate and advanced learners and is intended for people over 13. We do not knowingly collect information from children under 13. If you discover that your child has created an account without your permission, contact us and we will delete the account and related data.
11. Changes to this policy
This document may be updated. The last-updated date is always shown at the top of this page, and if we make material changes we will notify you through the app or by email before they take effect.
12. Contact us
For any question, data access or deletion request, or complaint about how your information is handled, email support@viwapp.ir or call +98 999 986 0716. We aim to respond within 7 working days.