Cyph vs Olvid

Cyph is a privacy-focused messaging and social networking service for secure conversations, video meetings, and encrypted storage. It offers private instant messaging, encrypted group video calls, and scheduled meetings. Cyph Vault stores files, passwords, notes, cryptocurrency, and other data in encrypted cloud storage. The service is available on Android, iOS, Linux, macOS, web, and Windows, including a browser app that needs no download. Cyph says WebSign checks the integrity of its web application each time it opens, and that multiple quantum-resistant ciphers protect data against future quantum-computing advances. It also says it automatically helps prevent impersonation without requiring manual fingerprint verification. The site reports that a Cure53 security audit found no major issues in application security or cryptographic implementations. Cyph Telehealth adds live group sessions, unlimited patient sessions, one-click onboarding, and secure notes, forms, and history. It describes Telehealth as beyond HIPAA-compliant and says it includes a BAA. Cyph has a free plan; paid pricing starts at $3/mo (annual).

Olvid is an instant messaging app for text messages and attachments, available on Android, iOS, Linux, macOS, web, and Windows. Olvid says it does not require identifying details such as a phone number, email, name, address, or birth date. It also says messages and metadata are end-to-end encrypted, so it cannot know who is communicating with whom. Each message and file uses a single-use ephemeral key, intended to protect message history if a key is compromised. The app supports synchronization across devices without a master device. Secure audio and video calls are end-to-end encrypted; video calls support up to two contacts, while group audio calls have no participant limit. Receiving calls is free, and initiating them is free during a one-month trial that ends without billing or automatic subscription. The free plan includes unlimited messages and attachments, group discussions, ephemeral messages, multiple profiles, and inbound calls. Business costs €990 a year; Enterprise costs €990.50 a year.