Marble is not listed by the manufacturer, and the product contains d-limonene/solvent chemistry with unknown pH. On marble, an unsealed or sensitive finish could stain, etch, or become dull.
Why
The evidence supports use on several hard surfaces but does not establish compatibility with natural stone or marble specifically. The unknown formula details leave a realistic unresolved risk.
What to do
Do not use for routine marble cleaning based on this evidence. If attempting, verify the marble is sealed, test an inconspicuous area first, use a brief contact time, and rinse and dry thoroughly.
pH
Not stated in the provided manufacturer evidence.
Relevant chemistry
The evidence identifies d-limonene for the cleaner family; no numeric pH or broader chemistry classification is provided.
Source: official product page ↗