DresSecureComms is a FOSS, de-Googled, all-in-one secure communications app. It works fully offline for SMS and calls, with no Google services and no trackers.

Features:

• Messages: a private offline SMS client. Send and receive normal texts, or turn on encryption per message. Encrypted messages use AES-256-GCM and only work between two people who both use this app and share the same key. Keys are set per contact, so every person can have their own code. Includes photo sharing, group messages, search, and contact suggestions when you start a new message.
• Calls: dial any number or call a saved contact over your normal carrier line. The call log is searchable, the screen turns off when you hold the phone to your ear, and you can block or unblock any number straight from the log.
• Spam Shield: screens incoming calls before your phone rings. Rejects premium rate numbers, silences short codes, and flags callers faking the first digits of your own number. Saved contacts always ring through, and everything it blocks is listed in Settings so you can undo it. It runs entirely on the device, so no number is ever sent anywhere to be checked.
• Contacts: an encrypted local vault, stored with the Android Keystore. Add contacts by hand or import them from the device.
• Threat Scan: check a URL against VirusTotal using your own free API key.
• File Scan: check a single file, one app, or every app on your device against VirusTotal. Only the SHA-256 fingerprint is sent, and that is checked against seventy or more antivirus engines at once. If VirusTotal has never seen a file, you can choose to upload that one file for analysis. It always asks first, and a sweep of your apps never uploads anything.
• Metadata Wipe: strip GPS and EXIF data from a photo before you share it.
• Geo Spoofer: set a mock GPS location, or have the app pick a random one.
• App Lock: biometric or device PIN.
• Block Screenshots: stop screenshots and screen recording inside the app.

Encryption covers SMS text only. Pictures and group messages are sent unencrypted for now, the same as any normal messaging app, so they arrive readable on any phone.

End Notes:

Our app now gets called malware by Google play protect this is because of Googles misbehaviour when it comes to 3rd party apps especially if they're focused on securing you and being open sourced, they have also started this type of misbehaviour with GrapheneOS by banning revolut, we want to assure you that our application is clean and has been verified by IzzyOnDroid themselves along with it being whitelisted by some of the biggest security vendors that being Bitdefender, Avast, AVG and McAfee. If you have any prior worries to installing then please send us an email at security@dresos.org. We think Google is doing this to us because we have just hit 12k downloads and at least 10k of them are on DresSecureComms, so hopefully that gives you some insight.

We need your help to battle Google and its restrictions so if you use any of our projects, services or apps and it works for you then please tell a Friend to tell a Friend about us.

Part of the DresOS Android privacy and defensive-security project.

Website: https://dresos.org

Donate: https://ko-fi.com/dresos

Source: https://github.com/DresOperatingSystems/DresSecureComms