[arrowsmith]

"To whatsapp" is a common verb, but I have never heard anyone say "apping".

Where do you live where "apping" is understood?

[Deukhoofd]

Can confirm that it's an extremely common verb in The Netherlands.

https://onzetaal.nl/taalloket/appen-whatsappen-vervoeging

[JSR_FDED]

Heard it many times in the Netherlands.