Disclaimer: This app is not affiliated with nor endorsed by WhatsApp Inc. Note: Designed for use with WhatsApp Solving one major issue experienced by everyone i.e. you cannot message anyone without saving the number on your device. With Swiftly you can message anyone without storing the number. Some of the features of this app are as follows: 1. Send messages to anyone without saving the number on your device. 2. Dark mode supported. 3. 15+ international languages supported for your localized experience. 4. Customisation option available in the settings window.