@poVoq said in Spreadsheet App?:
a) OnlyOffice web version build into Nextcloud should work in the browser. Not ideal but probably the best/only option unless you want to run full OnlyOffice in Libertine.
I just tried with LibreOffice Online and it's not usable with morph browser on a N5 with UT.
I am not sure it will be better with OnlyOffice web version.