Entrepreneur Katie Kehlenbach won the $10,000 grand prize on Tuesday in first Round Rock Public Library' Biz.ability business plan competition.

Kehlenbach, who won with her design of a barbell collar, will receive $7,500, a Dell computer system worth $2,500 and a consultation with a Dell Technology expert. Mandy Kelly was named runner-up and won $3,500. The competition was targeted to Round Rock-based startup entrepreneurs.

"I'm really excited," said Kehlenbach, who is the co-founder ofAdderLock. "It's nice to hear the validation, when you have been building a business for years and to kind of continually be validated by users or people who are interested and people who see the problem that you're solving."

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