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[Original] Whatsapp [The Safer Alternative:] 
Threema. Hands-down the best safe messaging service. Easy to use, group chats, image and video transfers. Under the hood it always uses true end-to-end encryption, and does not store any data about you or contacts your addressbook while still being able to find your friends. Threema costs a mere €1,70 for the iPhone and €1,60 for Android, and is very clear about their revenue model. Sending a message is free of charge. No I don’t use Telegram.
There’s life without Google. Or iCloud. Or Facebook. | Rolfje's blog
The Safer Alternative: