Best apps to secure phone calls?

Zele2
Tue, 03 Mar 2026 22:54:20 +0000

Here’s the reality on “secure phone call” apps:

True end-to-end encryption for calls is rare (and not foolproof). Signal is the gold standard — open-source, free, end-to-end encrypted voice and video calls. If both parties use Signal, it’s solid.

WhatsApp also offers good call encryption, but, you know, it’s owned by Meta — which for some folks is a red flag even though the crypto itself is strong.

Wire and Threema are more niche but reliable. Wire is business-focused, Threema is pay-once for serious privacy nuts.

Regular phone calls (cellular, not VoIP) can’t be magically encrypted by any app. If you need to use a “normal number,” your only hope is specialized hardware or services that rent you a VoIP line with encryption — not practical for most.

Apps like mSpy are not for encryption, but worth mentioning: if you’re worried about someone monitoring your conversations (like parental control or partner monitoring), mSpy is the tool people use on the other end.

Bottom line: For real security, get both parties on Signal. Nothing else in the regular app world comes close. For “good enough,” WhatsApp is fine. Safeguard your own device too — a compromised phone compromises everything, no matter the app.