Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Product Market Fit Toolkit - Measure your product-market fit using data you already have
Telegram X - Meet Telegram X for iOS and Android – two new official apps that offer more speed, longer batter life and smooth animations.
Viable Fit - Measure and improve your product market fit
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
FaqFox - Find the questions your target audience is talking about