A lower subscription is only one part of the decision
Routing software sits close to the work that earns revenue. A cheaper system that creates late deliveries, longer driver routes, or more dispatcher work can cost more overall.
Build the cost model around completed deliveries and operational constraints. Start with actual invoices and dispatch work, then compare realistic options. This guide is about replacement economics; the broader custom versus off-the-shelf software guide covers the initial build-or-buy decision.
Define the layer you would replace
List what the team uses today: address checks, route planning, delivery windows, capacity limits, driver assignment, status updates, proof of delivery, and customer messages. Separate required capabilities from paid features nobody uses.
Then mark which functions depend on an external service. You may need a custom dispatch workflow while keeping established mapping services. Rebuilding map data or every feature of a mature routing platform is a very different project.
Somnio’s meal-delivery routing case study describes this narrower approach. The team built a routing layer, matched the old API interface, and retained external mapping services. The account describes comparing results before switching production traffic during a three-month rollout.
That implementation detail matters more to planning than a headline savings percentage: it identifies what changed and what remained a dependency.
Build a like-for-like cost worksheet
Use the same delivery volume and service requirements for each option. Compare at least keeping the current setup, changing its plan or configuration, and building a scoped replacement.
| Cost group | Inputs to collect |
|---|---|
| Current avoidable spend | Fees that actually end after cancellation, not all technology spend |
| Replacement usage | Mapping, geocoding, messaging, and other usage-based services |
| Replacement operations | Hosting, monitoring, maintenance, support, and dispatcher effort |
| One-time investment | Discovery, build, integration, migration, training, testing, and internal project-owner time |
| Transition | Parallel subscriptions, reconciliation work, cancellation terms, and rollback provision |
| Operational effect | Driver time, route distance, late deliveries, and exception handling |
Separate fixed costs from costs that rise with deliveries or API calls. Ask the implementer to explain call volume, including retries and address corrections, rather than pricing only the ideal path. Use current supplier quotes for your contract and region; this worksheet is not a vendor price list.
Give the parallel-operation line its own duration. The published case describes a three-month rollout, but does not state that both subscriptions ran for all three months. Price the overlap your transition actually requires, including the internal owner’s time for decisions and reconciliation.
Avoid double counting. If dispatcher time is included as an operating cost, do not count the same reduction again as a separate cash saving. Time released is useful capacity, but it becomes cash savings only when spending actually falls or another measurable financial benefit results.
Calculate payback without hiding assumptions
Monthly net savings equal the current costs that disappear minus the replacement’s additional monthly costs, adjusted for the operating-effort change you estimate now and verify after the switch. Costs that remain in both options cancel out. Keep capacity benefits separate from cash savings unless they change actual spending or another measured financial result.
Simple payback in months equals total one-time investment divided by positive monthly net savings. If net savings are zero or negative, there is no simple cost-saving payback under those assumptions. A different strategic benefit would need its own justification.
As a purely hypothetical example, a $24,000 build and transition investment with $1,000 in monthly net savings has a 24-month simple payback. If higher usage reduces net savings to $500, payback becomes 48 months. These figures are arithmetic examples, not Somnio prices or client results. They exclude financing and the time value of money.
Run a conservative scenario with lower delivery volume, higher usage costs, and more support effort. Also test peak volume. Do not approve the project solely because the most optimistic row looks attractive.
Read the published savings with the right boundaries
The routing case reports monthly routing costs falling from $2,500 to $300. The difference is $2,200, or 88% of the original monthly amount. Multiplying that difference by 12 gives $26,400 in annualized routing-cost savings.
The study’s $132,000 five-year figure is a projection at unchanged costs, excluding project investment. It is not an observed five-year return. The public account does not provide a complete build investment and ongoing cost breakdown for calculating net payback. Do not treat $300 as a quote for another delivery business.
The study also reports doubled processing capacity without a published benchmark workload or measurement period. That is context, not a capacity promise to use in your forecast. These are Somnio’s published project results, not an independent industry benchmark.
Make route quality a gate before cutover
Compare representative routes using the same orders, vehicle constraints, service windows, and depot rules. Include peak days, failed address lookups, cancellations, and last-minute changes. Agree acceptable results with dispatch before implementation.
Measure more than software processing speed. Compare route distance, driver time, feasible delivery windows, and the manual corrections needed. The lowest API bill can still produce a worse delivery operation.
Include customer notifications, tracking links, and the driver workflow in the trial. Budget training for changes drivers and dispatchers must learn. Matching the old API interface can limit changes to connected systems, but customer and staff behavior still need verification.
Keep the old path available during a controlled transition where feasible. Name who can authorize switching traffic back and how orders created during the trial will be reconciled. Verify cancellation terms before assuming the old subscription disappears immediately.
Start with a month of invoices and a representative set of completed routes. Fill the worksheet, identify missing cost inputs, and ask whether a smaller configuration or integration change solves the problem. If a custom layer still looks justified, bring those records to Somnio’s architecture consulting service for a scoped assessment.
