Wisp - Private Messenger

Wisp is a private messenger built on the Signal Protocol. Every message, photo, file and call is end-to-end encrypted before it leaves your phone, and your keys never leave the device — our servers only ever relay ciphertext, so nobody at Wisp can read a thing. Message and call the people you care about, share photos and stories that expire on their own, and be reached by a username instead of your phone number. No ads, no trackers, no message data collection. Privacy & encryption - End-to-end encryption on every message, photo and file (Signal Protocol / libsignal) - Servers relay ciphertext only — no readable messages, media or profile names - Private keys generated and stored on your device, never uploaded - Profile name, photo and about encrypted with your profile key - Attachments encrypted before upload, decrypted only on the recipient's phone - Safety number verification, plus an in-chat warning when a contact's code changes - Registration lock PIN — your number can't be registered elsewhere without it - App screen lock with a PIN - Hide screen in the app switcher - Read receipts toggle (off means you neither send nor see them) - Phone number discoverability: found by everybody or nobody - Delete your account, or wipe all data on this device, permanently - No ads, no trackers Messaging - One-to-one text chats - Delivery and read status (sent / delivered / read) - Send photos from the gallery or camera, and any file or document, with captions - Full-screen photo viewer with pinch-to-zoom - Local message search - Archive chats with a swipe, plus an Archived folder - Contact search and a New Message sheet Calls - Encrypted voice calls - Encrypted video calls - Encrypted video calls - Incoming calls ring even when the app is closed, with a full-screen Answer/Decline screen and a ringtone that respects your ringer mode - Calls relayed so the other person never sees your IP, with an optional "always relay" - Low-data call mode (never / on cellular / always) - Call history Stories - Post a photo story that expires on its own - Encrypted once for the whole audience with a sender key - Per-contact story audience control - Withdraw a story — it disappears for anyone who hasn't opened it Identity - Phone number sign-up with SMS code - Usernames, so people can reach you without your number - Share your username as a QR code, or scan someone else's - Profile with name, photo and about Notifications - Push notifications for messages and calls - Lock-screen content control: full content, name only, or nothing - Message sound, in-app sound, sent-message sound - Alerts when a contact joins or when a safety number changes Personalisation & storage - Light, dark or system theme, plus accent colours - App-wide text size - Auto-download rules per media type (never / Wi-Fi / Wi-Fi and cellular) - Sent media quality setting - Storage view with real figures, and one-tap clear of downloaded media - List of devices on your account, each with its own keys