WaStat – WhatsApp tracker - WaStat – WhatsApp tracker app shows the last online time of a phone number at a glance, so you can contact them whenever they get online to share something important to them.
Telegram X - Meet Telegram X for iOS and Android – two new official apps that offer more speed, longer batter life and smooth animations.
Last seen tracker for WhatsApp - Last seen tracker for WhatsApp app helps you save all your WhatsApp data on the internal storage to view all your recent conversations at a glance.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Whatsdog Last Seen - Whatsdog Last Seen app shows the accurate last online time of all the phone numbers in your contact list to message them right on time and get an instant reply from them.
Plus Messenger - Free Android Messenger that uses Telegrams API.