Best green commute planner for bootstrapped startups

The commute planning space has roughly 15-25 tools worth mentioning, but only 3-4 genuinely target cost-conscious startups: most are either bloated enterprise solutions (Commute Mode, HopSkip) or consumer-only transit apps (Citymapper, Google Maps) that don't solve the employer's problem. The common failure is feature bloat—existing tools add carbon tracking, team leaderboards, and API integrations that startups don't need, making onboarding a nightmare. The real pain point founders face is reconciling sustainability goals with budget constraints; they want to encourage greener commuting without complex admin overhead or per-employee costs. The gap lives in the intersection of simplicity, affordability, and local relevance—a planner that works for 10 or 500 employees, integrates basic Slack/email nudges, and doesn't require procurement cycles. A new entrant should obsess over two things: (1) making it actually free or genuinely micro-transactional for small teams (under $50/month), and (2) pre-loading real transit data for 10-15 major metros rather than trying to be global. Founders also want visible ROI—cost savings from reduced parking or fuel subsidies, and simple metrics they can share with teams without environmental jargon.