Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.
Strong.app - Strenght training logger.
WhenWorks - Mobile appointment scheduling
Hit or Miss - Tinder for women's fashion
Inspora - virtual chat-stylist for fashion advice.
JEFIT - Jefit is the #1 popular gym workout app for Android and iOS. Jefit allows you to manage your training routine and keep track of your workout progress easily.