San Francisco -- 100Plus, a San Francisco-based personalized health prediction startup, said on Wednesday it has landed $1.25 million in a new round of seed funding from Greylock Discovery Fund partners John Lilly and Reid Hoffman, Felicis Ventures and Band of Angels Acorn Fund. The investments come less than a month after the company raised its initial seed funding from Founders Fund and Peter Thiel, a managing partner at the firm and co-founder of PayPal. 100Plus is developing an interactive health application that utilizes large clinical datasets to create algorithms showing personalized predictions of future health. The tool also will show users how they compare to people like them, and use game mechanics to encourage incremental changes in behavior. The company is planning a beta launch to consumers in mid-2012. "This funding will allow us to rapidly grow our data analytics, engineering and user experience teams and build out our initial product," said co-founder Chris Hogg.