1) Let's you check if a number uses WhatsApp
2) Let's you WhatsApp message/call numbers not in your contacts
You can get creative with the app and use it to send a message to yourself or respond to missed calls by WhatsApp. It's a bit of a fringe app so only useful if you want to contact/check numbers not in your contacts!
Available on the Play Store: https://play.google.com/store/apps/details?id=com.checkwhatsapp.number
2) Let's you WhatsApp message/call numbers not in your contacts
You can get creative with the app and use it to send a message to yourself or respond to missed calls by WhatsApp. It's a bit of a fringe app so only useful if you want to contact/check numbers not in your contacts!
Available on the Play Store: https://play.google.com/store/apps/details?id=com.checkwhatsapp.number