Mobile apps collect a lot of user data, often more than necessary. This data can be used for targeted advertising, sold to third parties, or potentially accessed by government agencies. With a second Trump presidency, everyone should be concerned about data privacy and security. Secure, privacy-focused apps are no longer just for the techies, they’re for anyone who values their freedom of speech, without the fear of repercussion or manipulation.

Here are a few mobile app options for secure messaging, broken down by security features, data privacy, and unique aspects.

Signal

Website: https://signal.org/
Security Features
- End-to-end encryption for all communications
- Uses the open-source Signal Protocol
- Self-destructing messages
- Screen security feature to prevent message content in notifications
- Safety numbers for contact verification
- Secure passphrase for app data protection
Data Privacy
- Minimizes metadata collection
- Does not store message content on servers after delivery
- Open-source code for independent audits
- No IP address logging
- Uses "sealed sender" to obscure sender and recipient information
Target Audience
- Privacy-conscious individuals, journalists, and activists who prioritize security. It's also suitable for general users looking for a secure alternative to mainstream apps.
Cost: Free

Website: https://telegram.org/
Security Features
- End-to-end encryption for "Secret Chats"
- Server-client encryption for regular chats
- Self-destructing messages
- Two-step verification
Data Privacy
- Regular chats are stored on Telegram's servers
- Claims to be not-for-profit and uninterested in selling user data
- Offers a reward for decrypting Telegram messages
- Minimal personal information required beyond phone number
Target Audience
- Users seeking a balance between features and security, particularly popular among younger demographics and international users.
Cost: Free

Session

Website: https://getsession.org/
Security Features
- End-to-end encryption using a modified Signal Protocol
- Decentralized network for message routing
- No phone number or email required for account creation
Data Privacy
- Encrypts both message content and metadata
- Uses blockchain-based approach for enhanced anonymity
- Does not store user IP addresses or identifying information
- Open-source code for transparency
Target Audience
- Users seeking maximum privacy and anonymity, including cryptocurrency enthusiasts. It's suitable for individuals in high-risk environments needing secure communication.
Cost: Free

Element

Website: https://element.io/
Security Features
- End-to-end encryption based on the Matrix protocol
- Decentralized storage with user-controlled servers
- Cross-signed device verification
Data Privacy
- Users control where their data is stored
- Minimizes metadata collection
- Open-source code for independent audits
- No phone number required for account creation
Target Audience
- Tech-savvy users valuing decentralization and organizations looking for customizable solutions. It's ideal for those interested in interoperability with other Matrix-based apps.
Cost: Free and Paid

Threema

Website: https://threema.ch/en/secure-messenger
Security Features
- End-to-end encryption using the NaCl library
- Does not require phone number or email for registration
- QR code scanning for contact verification
Data Privacy
- Collects minimal user data
- No display of ads
- Open-source code
- Decentralized architecture
- Regular external security audits
Target Audience
- Privacy advocates, businesses, and educational institutions requiring secure communication. It's suitable for users willing to pay for enhanced privacy.
Cost: It depends on the platform but starts at $5.99 (one-time fee).

I use all of them to maximize my secure communication options, but I don't expect everyone to do the same, especially if you're a casual, non-techie user. When deciding which one to use or recommending one to your family and friends, consider the person's technical experience and how they plan to use it. If you're looking for a quick, secure, and somewhat mainstream option, Signal is a great choice.

What about WhatsApp?

WhatsApp can be a secure messaging option, but I left it out because it's owned by Meta. However, many people worldwide, including my extended family, already use WhatsApp, and that's fine. If it's the simplest way to have secure conversations with your friends and family without much change, then stick to it.