... solo developer the app "rendezyou". https://rendezyou.app/rendezyou-... rendezyou is an app for organizing events or appointments by using phone numbers from your phone book. I know that there are plenty of event and appointment apps (like Outlook, AppleInvites etc.) out there, but they rely on email addresses or sharing links. And I was frustrated with WhatsApp for organizing appointments just to organize them by using phone numbers from my phone book. Currently I'm using rendezyou with friends ...