How can we help?

Download Wister from the App Store or Google Play, open the app, and register with your phone number. You'll receive an SMS verification code to complete the setup. No email address is required.

Go to Settings > Account > Delete Account within the app. Alternatively, you can email us at privacy@wister.site to request account deletion. Your data will be removed within 30 days, except where retention is required by law.

Make sure your phone number is entered correctly and that you have cellular signal. Wait a few minutes and tap "Resend Code." If the problem persists, try restarting your device or contact us at wister@wister.site.

Go to Settings > Account > Change Phone Number. You'll need to verify your new number with an SMS code. Your chat history and contacts will be preserved.

Currently, Wister supports one device per account. If you sign in on a new device, you'll be signed out of the previous one. We're working on multi-device support for a future update.

Rubies are digital items you can purchase within Wister and use to send Gifts to your contacts in private chats. They are digital content with no real-world monetary value and cannot be exchanged for cash. 100 Rubies = €1.00 (inclusive of VAT).

Open a private chat with a contact, tap the gift icon, and select "Get Rubies." Purchases are processed securely through Apple App Store or Google Play Store as In-App Purchases. We also support Stripe, Apple Pay, and Google Pay.

As digital content, Rubies are generally non-refundable once delivered (per EU Directive 2011/83/EU). However, you may be eligible for a refund if Rubies were not delivered, there was a technical error, or the purchase was unauthorized. See our Refund & Billing page for full details.

In a private chat, tap the gift icon at the bottom of the screen. Browse the gift catalog, select a gift, and confirm sending. The recipient will see the gift appear in the chat with an unwrap animation.

Yes. All chat messages are protected with End-to-End Encryption (E2EE) using X25519 key exchange and AES-256-GCM encryption. Only you and the recipient can read your messages — not even Wister can access them.

No. Wister does not display ads, does not use advertising SDKs (no IDFA, no Google Advertising ID), and does not track users across apps or websites. We use Firebase Analytics only for anonymous, aggregated usage statistics. See our Privacy Policy for details.

Under GDPR, you have the right to access, rectify, or delete your personal data. Send your request to privacy@wister.site and we will respond within 30 days. You can also delete your account directly from Settings > Account > Delete Account.

Your profile (display name, bio, photo) is visible to your mutual contacts — people who have your phone number saved and whose number you also have saved. You can control your online status and read receipts in Settings > Privacy.

Your data is stored on Google Cloud Platform servers in the EU (europe-west1 region). We follow industry-standard security practices including encryption at rest and in transit. Financial data for KYC is encrypted with AES-256.

Stories are photo or text posts that are visible to your contacts for 24 hours, after which they are automatically deleted from our servers. You can post stories from the main screen by tapping the camera icon or your story ring.

Open a chat with a contact and tap the phone or video icon in the header. Calls are encrypted end-to-end and require a stable internet connection (Wi-Fi or mobile data). Both parties need the Wister app installed.

Make sure notifications are enabled in your device settings for Wister. On Android, check that battery optimization is disabled for Wister (Settings > Apps > Wister > Battery > Unrestricted). Also check your in-app notification settings in Settings > Notifications.

Wister requires Android 6.0 (Marshmallow) or later, or iOS 14.0 or later. A stable internet connection is required for messaging and calls. The app uses approximately 100 MB of storage.

The Gift Repurchase Program allows Wister to offer, at its sole discretion, to repurchase specific Gift Instances that you've received from your contacts. To submit a repurchase request, you must be 18+, own eligible Gift Instances (held for at least 7 days), and complete identity verification for amounts over €100. All requests are reviewed manually. There is no guaranteed right to have any Gift Instance repurchased. See Section 7 of our Terms of Service and our Gift & Repurchase Policy for full details.

Within the app, you can report through multiple methods:

Report a user: Open their profile > Menu (three dots) > Report
Report a message: Long-press the message > Report
Report a story: Open the story > Menu > Report

You can report for harassment, spam, inappropriate content, fraud, impersonation, or underage use.

Our team reviews every report and takes appropriate action, which may include content removal, account suspension, or account termination. You will not be penalized for making good-faith reports. Reports are confidential — the reported user will not know who reported them.

Open the chat with the contact you want to block, tap the header or the menu (three dots), and select "Block Contact." Blocked users cannot send you messages, call you, or see your stories. You can unblock users from Settings > Privacy > Blocked Users.

Wister is operated by DONATION POS L.P. (DONATION POS E.E.), a limited partnership registered in Greece. Our registered address is El. Venizelou 218, Kallithea, 17675, Athens, Greece. GEMI: 178825503000, VAT: EL802572430.

Send your request to privacy@wister.site specifying whether you want to access, rectify, or delete your data. We will respond within 30 days. For complaints, you may also contact the Hellenic Data Protection Authority (HDPA).

For consumer disputes within the EU, you may use the EU Online Dispute Resolution platform. For legal inquiries, contact us at legal@wister.site.

Users must be at least 16 years old to create a Wister account (with verifiable parental or guardian consent for users aged 16–17). Users must be at least 18 years old to purchase Rubies or participate in the Gift Repurchase Program.