Best fitness challenge app for small teams

There are roughly 40-60 apps claiming to offer team fitness features, but most are either scaled-down versions of enterprise wellness platforms (Strava Teams, Fitbit challenges) or solo-first apps with bolted-on social features. The common failure is treating 'team' as a checkbox rather than the core mechanic—leaderboards feel tacked on, accountability is weak, and the UX assumes you're competing against strangers, not people you actually know. The real gap sits between enterprise (expensive, bloated) and consumer (isolating, generic). Small teams need something purpose-built: lightweight enough to adopt in 5 minutes, friction-low enough to sustain engagement without nagging, and designed around micro-cohorts where peer pressure and genuine camaraderie drive participation. A shipper entering this space should obsess over retention mechanics for tight groups—think private leaderboards, streak tracking that rewards consistency over athleticism, and social friction (simple check-ins, team-branded challenges, built-in celebration moments). The monetization angle is also clearer here: small teams will pay $3-8/person/month for something frictionless, whereas they'll never adopt complex enterprise solutions.