hēRo3 (heroapps.io), now part of Avalere Health, is a revolutionary cloud-based platform for building, running, and sharing cost-effectiveness models as secure interactive web apps. hēRo3 supports development of both Markov cohort and partitioned survival models.All calculations in hēRo3 are performed using a heavily-tested modeling package in R that runs in an AWS virtual private cloud. Using modern Web technologies, hēRo3 brings the power of R to all modelers even if they've not had any programming experience in R. hēRo3 also saves immeasurable amounts of time by automatically producing visually engaging and highly customizable displays. hēRo3 is also transparent and easy to QA. Best of all, hēRo3 can be run on practically any Web-enabled device.hēRo3 is designed to address a range of problems that have plagued health economics modeling in Microsoft Excel for years, including: (1) difficulty in spotting, tracking, and correcting programming errors; (2) limited graphics functionality, with few options for customization; (3) heavy investment in development of bespoke user interfaces; (4) limited analytic functionality without use of additional Visual Basic code; (5) difficulties with version control and life-cycle model management; and (6) limited options for usage analytics and statistics.hēRo3 was launched in mid-2018, and now is being used by numerous organizations. If you're interested in receiving more information about hēRo3, go to heroapps.ioIf you are a full-time student, faculty member, or researcher at an academic institution, you can receive a complimentary license to use hēRo3 (for non-commercial purposes only). If you are interested in receiving a complimentary academic license, please register at https://hero3.heroapps.io/app/academic/login.hēRo3--accelerating and empowering HEOR