23 across
Reckons
French
are
investing
in
good
applications
(7)
Reckons French are investing in good applications (7)
hints
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The definition is at the beginning of the clue.
How the clue works
Look at the start: Reckons is your definition, as in supposes or estimates. For the wordplay, take G (good) and USES (applications), then put "French are" (ES) inside USES, which gives G, U, ES, SES and so GUESSES.