Other features: - Two factor authentication - End-to-end encryption using an asymmetric key. - Improved end-to-end security using a security key as a second factor which encrypts data using a shared symmetric key. - Minimal privileges required. - No in app purchases. - No ads.
How does end-to-end encryption work in this app: 1. Whenever you send a message M a random symmetric key R is generated 2. R is encrypted using the asymmetric (public) key of the other user resulting in A 3. M is encrypted with R resulting in N 4. If security key S is set: N is encrypted by S 5. N and A is sent to the destination
Recent changes: * Several UI fixes for recent Android versions * Bugfix: Rare crash in group conversations
Get a detailed PDF report for Copiosus with download trends, rating history,
and key performance statistics — useful for competitive research or tracking your own app.
Learn more
Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
This app is AMAZING!!! I love how minimal it is. The only thing I would want is a Windows (not from Windows Store) and Mac compatible version.
★★★★☆szaronkox· May 20, 2021
Interesting app. Can I know what programming language is it coded in?
★★★★☆Allen Nelson Mundackal· Feb 23, 2021
The idea of the app is great. Can't you make this an open source project? Which can help improve trust and also will help in improvement of the application.
★☆☆☆☆Bob A· Feb 9, 2021
UNHEALTHY PERMISSIONS. YOU POSE LAME, BECAUSE YOU ARE LAME, BUT THAT DOES'NT MEAN YOU'RE NOT WITHOUT NEFARIOUS INTENT TO STEAL DATA.
Google Play Rankings for Copiosus
This app is not ranked
Technologies used by Copiosus
10 permissions·30 libraries
Subscribe to see full permission and library details
Back to top
AppBrain Intelligence premium content
Subscribe now to get full and unlimited access to AppBrain Intelligence.
You'll have access to:
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
