"regularly use" is correct and usable in written English.
You can use it when you want to show that a certain action is done in a habitual manner. For example, "I regularly use my bike to get around town."
Many of us regularly use technology to simplify our lives.
Don't punish those of us who regularly use your service.
I now regularly use videoconferencing.
You regularly use the word dialogue.
Pharmacies and supermarkets regularly use them to ship merchandise.
I still regularly use the library here in Marlborough.
Bears like thick brush, berry patches and parsnip thickets, but also regularly use hiking trails.
Half of them regularly use social networking sites and a quarter maintain their own digital profiles.
I found my course interesting, and regularly use the things I learned in my writing.
The IFPI report estimated that almost a third of all internet users regularly use unlicensed sites.
Tens of millions of Americans regularly use anti-inflammatory painkillers for arthritis.
