RAPPOR relies on differential privacy only, including to protect the privacy of individual inputs; by necessity this limits the utility of the output. With Pri

RAPPOR relies on differential privacy only, including to protect the privacy of individual inputs; by necessity this limits the utility of the output. With Prio the inputs are protected cryptographically, which means you can have higher utility outputs (i.e. you can add less noise and achieve the same level of differential privacy). Combining DP and MPC techniques like Prio is an interesting research topic at the moment and comes up in a lot of "secure aggregation" settings.