CrimsonZip vs Shift by GSI

CrimsonZip simplifies connecting within the Harvard community. Discover new activities, stay fit, join groups, make friends, learn a new sport, and have fun —all in one place! Whether you’re looking to create a shared interest group that everyone at Harvard can join or a private group just for your close friends, this app gives you the tools to do so. Looking to start a weekly soccer game, or a walking group? Groups not your thing, but looking for a workout partner? What about organizing a movie night? CrimsonZip is designed to foster a vibrant community by making it easier than ever to organize, share, and participate in the activities that matter to you. Discover new interests and passions all within one convenient platform. Everything you need to stay connected to your favorite activities is right here and exclusively for Harvard community members with an active HarvardKey.

Shift by Green Streets Initiative detects your walks, bike rides, and transit trips automatically — no tapping, no logging, no thinking about it. Your commute earns you real rewards while you move. See your real impact Every active trip shows you money saved, calories burned, and CO2 prevented — translated into equivalencies like trees planted. Earn rewards Earn Shift Experience Points (XP) on every walk, bike ride, and transit trip. Find rewards from local businesses. Stay motivated with streaks and badges Build daily streaks with a forgiving 2-day grace period. Unlock badges for distance milestones, trying new modes, and braving bad weather. Progress through five tiers from Starter to Trailblazer. Compete with your community Join your neighborhood, workplace, or school automatically. Climb leaderboards and enter monthly challenges. Challenges are based on "shift rate" — the percentage of your trips you walk, bike, or ride transit — so everyone competes fairly. Discover new ways to get around Browse community events, explore personalized route suggestions, and read guides that help you try walking, biking, or transit for trips you haven't before. Shift for Schools Teachers can run classroom walking and biking challenges with a simple wall chart — no student accounts or devices needed. Parents see school standings on the web or right in the app. How it works Shift uses background location to detect and log your trips automatically — no manual input needed. Your points, stats, and streaks update as you go. Free to use. No ads. No subscriptions. Built by Green Streets Initiative, a nonprofit promoting active transportation since 2006.