Ghostr vs ANCROM

Ghostr is an encrypted messenger built around a simple principle: your privacy is not a compromise. No phone number, no email address, no personal information is required to communicate. All messages, calls, photos, videos, and files are protected by end-to-end encryption. No one can read your content — not even us. POST-QUANTUM ENCRYPTION Ghostr uses the most advanced cryptographic protocols available, including ML-KEM-768 standardized by NIST in 2024. Your communications stay protected against current attacks and against future quantum computers. - Triple Ratchet for perfect forward secrecy - PQXDH for post-quantum session establishment - Sealed Sender to minimize metadata exposure to the server - OHTTP routing to separate your IP address from content METADATA MINIMIZATION Most messengers encrypt content but still expose metadata — when you send a message, how often, and to whom. Ghostr adds an extra layer of network privacy on top of end-to-end encryption: - Constant-rate traffic patterns that don't reveal your activity timing - Cover traffic that normalizes overall activity patterns - Adaptive padding to normalize packet sizes - Background polling independent of when you actually send messages NO ACCOUNT REQUIRED Instead of a phone number or email address, Ghostr generates a random identifier locally on your device when you first launch the app. This identifier acts as your contact handle and is not linked to any personal information. You add contacts by scanning a QR code or sharing an invitation link — no directory lookup, no upload of your address book. ROBUST LOCAL LOCK Your device is the last line of defense. Ghostr protects local access with a password derived through Argon2id (OWASP 2025 standard). - Configurable auto-lock (immediate or delayed) - Optional data erase after multiple failed login attempts (the same protection iOS offers natively) - Fully encrypted local storage (SQLite + Argon2id keys) - Forced lock on cold start FEATURES - Real-time encrypted text messages - High-quality encrypted voice calls - Photo, video, and file sharing (encrypted) - Voice messages - Push notifications without revealing content - No ads, no trackers, no behavioral analytics TRANSPARENT SECURITY Ghostr is built on open and publicly auditable protocols. The cryptography relies on well-established libraries audited by the community. No proprietary protocols. No hidden telemetry. WHAT WE DON'T COLLECT We cannot read your messages. We cannot know who you are talking to. We cannot know when you communicate. We cannot access your files. We cannot identify you. These properties follow from the architecture — guaranteed by cryptography and data minimization, not by promises. COMPLIANCE Ghostr complies with the General Data Protection Regulation (GDPR). You can delete your identifier and all associated data at any time from within the app, or simply by uninstalling Ghostr from your device.

ANCROM - Private Messaging ANCROM is a messenger for people who want their conversations to stay between them and the person they are talking to. No phone number, no email address, no address book upload. SECURITY BUILT ON STANDARDS End-to-end encryption with post-quantum protection Messages are encrypted on your device and can only be read by your contact. Keys are agreed using a hybrid method that combines ML-KEM-1024 and elliptic-curve cryptography (P-384), so conversations stay protected even against future quantum computers. Messages are encrypted with AES-256-GCM. A fresh key for every message Keys change with every message (forward secrecy). Even if a key were ever exposed, earlier messages stay protected, and the conversation recovers on its own. Sealed Sender Each message is encrypted as a whole before it leaves your device. Our relay servers only learn where to deliver it - not who sent it. Verified contacts Add contacts by scanning their QR code in person. Far apart? One of you creates a one-time code and reads it out, for example on a phone call; the other types it in. Both phones then show the same six-digit number - compare it before you confirm. You can also compare a safety number in the chat at any time. If a contact's security key ever changes, ANCROM warns you and pauses the conversation until you verify again. NOTHING STORED THAT ISN'T NEEDED Short-lived relay storage Our servers only pass messages on. A message is held until your contact's device confirms it, for at most 24 hours, and then deleted. Your data stays on your device Chats are stored only on your phone, in an encrypted database protected by your password. No cloud sync, no server-side history. Protected sign-up No phone number, no email address, no personal information required. Clean photos Location, camera details and other metadata are removed from images before sending. PROTECTION ON YOUR DEVICE - Screenshot protection - Auto-delete for messages - Duress PIN and panic button to wipe your data instantly - Detection of jailbroken or manipulated devices Only people you add can reach you. Messages from strangers are not shown until you add them yourself. GOOD TO KNOW Your privacy comes with responsibility: because nothing is stored in the cloud, your chats are gone if you delete the app or lose your device. There is no recovery, by design. SUBSCRIPTION You can use ANCROM free of charge for a few days to get to know it. After that, an auto-renewable subscription is required, starting with a 7-day free trial. - Price: $19.99 per month - Payment is charged to your Apple ID upon confirmation. - The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. - Manage or cancel your subscription in your Apple Account settings. We do not show ads and do not sell data. The subscription pays for the service. Terms of Service: https://ancrom.com/terms.html Privacy Policy: https://ancrom.com/privacy.html Support: support@ancrom.com Developed in Germany.