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Always Free Promise

CobbleRoutes stays free.

This project is built around one rule: useful city route planning should be accessible to everyone, not squeezed behind plan tiers.

No Stop Gating

Trips are not locked behind subscription tiers. We optimize routes for your plan without capping core planning features.

No Freemium Traps

No trial walls, no “unlock this itinerary” prompts, and no hidden pay-only route quality.

Transparent Math

Route planning is based on open, auditable methods and we document what the optimizer does.

Why This Is Sustainable
  • Self-hosted routing stack on open map data.
  • No paid routing API pass-through costs per itinerary.
  • Lean architecture focused on planning quality over upsell mechanics.
Algorithm Notes
  • Travel-time matrix from OSRM Table API (walking profile)
  • Multi-day geographic grouping with deterministic k-means clustering
  • Cluster balancing to match pace targets per day
  • Exact Held-Karp TSP solve for stop ordering within a day
  • Time-aware scheduling that respects opening hours and visit durations

What You Can Expect Next

We will keep publishing routing logic updates and keep the planner usable without subscriptions.

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