Free Software for Android Wear
WhatsApp is free messenger app for chat and voice over IP, owned and managed by Facebook. The application allow users to send text and voice messages, make voice and video calls and share images, media files and user locations with friends and family.
Gmail
Arguably the most popular email service in the world, Gmail provides a email inbox for over 1.5 billion users. With Gmail you can create an email account for free that manages emails and contacts in the same application. Gmail is web-base but provides clients for mobile devices and supports third-party programs that synchronize email content through POP or IMAP protocols.
Airbnb
Airbnb is an online marketplace and platform booking and renting out travel accommodation. Anyone can host on Airbnb in exchange for a 3% commission fee for every booking. The platform is accessible in 62 languages and available across 220+ countries across the globe.