Picastro vs Notabit

Picastro is the ultimate mobile platform for sharing your high-resolution astrophotography and space images — designed by an astronomer, built for the astronomy community. Whether you're a beginner capturing your first star trail or a seasoned astrophotographer imaging distant nebulae, Picastro brings together a passionate, ad-free, and bot-free community that shares your love for the cosmos. Why Picastro?
Hi-Res Images, No Compromises – Share stunning celestial captures in full detail
• Positive, Curated Community – Engage with real people, not algorithms
• Beginner & Expert Friendly – Grow your skills and get inspired by others Exclusive Features:
StarCard – Showcase your gear and style
• StarCamps – Connect locally or globally with others under dark skies
• Progress Badges – Earn NASA-style icons as you explore and grow Unlike general social platforms, Picastro is 100% focused on space. There are no ads, fake accounts, or spam — just pure cosmic content. Join thousands of fellow stargazers and photographers around the world who are already sharing their journey through the universe. Download Picastro now and become part of the astronomy community that's changing the way we share the night sky.

You no longer have to worry about the actual cryptographic reliability of the messengers you use for encrypted messaging. Regardless of a messenger's promises, the Notabit encrypted messaging app adds another layer of end-to-end encryption to your messenger secret conversation with a cipher you can see and test. Type your message into Notabit, get an encrypted cipher, and send it to your recipient via any messenger, SMS, or email. Since Notabit is an independent, third-party encrypted messaging app, there is no way to compromise the encryption through a predefined loophole on the server side of the messenger or any other party in the middle. Just consider any popular messenger as a useful communication channel with a cryptographic quality you can never really verify to send strongly encrypted messages with Notabit. To send encrypted messages, click the "New Chat" button and copy the default generated encryption invitation into any messenger and send it to your recipient. Your recipient will receive the encryption, add it to his Notabit and enter his reply. And so on. The app uses encryption and signing with public-key cryptography. The sender encrypts the message with the recipient's public encryption key and signs it with the sender's private signing key. The recipient decrypts the message with the private signing key and verifies the signature with the sender's public signing key. This process of key exchange means that communication takes place in ping-pong mode, i.e. each request must be answered in order for a chat to remain consistent.