Simlar

Simlar lets you make free, encrypted calls over the internet. It’s simple: pick a contact and call. Contacts using Simlar auto-appear. Invite friends easily—works on iPhones too. Uses ZRTP encryption for tap-proof calls. Verify a short code on first call for extra security. Open-source and free. Needs a stable internet connection—1MB for 2 mins. Learn more at simlar.org.