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Startups offering everything from personalized nutrition and pregnancy apps to live online fitness instruction and a smart, souped-up toothbrush are among the members of Rock Health’s latest class of companies.

The San Francisco-based health tech accelerator on Thursday announced its fourth class of 14 startups, saying that it accepted less than 3 percent of the applicants.

The accelerator said this seasons’ applicant pool included more companies with hybrid hardware/software models, which is reflected in a couple of the startups selected to be part of the class.