XnView-compatible Android app to tag Metadata

[alobo]

Is there a (recommended) Android app to tag photos, which would be later become incorporated to XnView as metadata?
Thanks

[xnview]

you would like to add keywords on jpeg images?

[alobo]

Yes, jpeg and any other format. Currently I use fstop (http://www.fstopapp.com/) to tag the images I take with the phone, but I was thinking
on using fstop or another app to also tag images that I've taken with the camera through a pendrive and an adaptor. That way I could take advantage of
commuting time to review and tag images not having to carry a laptop. But I would like these tags to be compatible with XnView metadata, and wondered if there is an app that has already been designed for this.

[michel038]

- IPTC or XMP metadata are standardized
https://iptc.org/standards/photo-metada ... -standard/

- for keywords, you can use iptc:keywords or xmp:subject
- xnviewmp can also read / write xmp:lr:hierarchicalsubject

- fastphototagger exists in android version

[xnview]

the tags with FSTOP are not compatible with XnView?