Degree Days Online (degreedays.net) is a weather-data service, not delivery software. It calculates heating and cooling degree days from thousands of weather stations for energy analysis and fuel-usage forecasting. If you are an independent dealer with roughly 100–800 customers and a handful of trucks, you may find Degree Days Online is more platform — and more cost — than you need. This page is an honest comparison, including where Degree Days Online is genuinely the better choice.
What Degree Days Online costs
Degree Days Online publishes pricing: a free basic website, and a developer API from about $9/month (one location) to $39/month (ten locations), with rate-limited API tiers from $49/month up to $1,995/month.
What FillDesk Pro does differently
FillDesk Pro is a one-time license, not a subscription: $999 for the delivery platform (or $1,499 with basic HVAC) plus a flat $149/year for hosting and compliance updates — no per-user or per-truck fees. The driver app is offline-first and runs as a web app on any phone, so there is no App Store fee and no dead-zone downtime. And your data is isolated to your account and exportable to CSV or JSON any time — you own it, you are not renting access to it.
Heating and cooling degree-day data, multi-year averages, historical data, a downloadable app, and a developer API.
Feature comparison
| Feature | Degree Days Online | FillDesk Pro |
|---|---|---|
| Product type | Weather-data service (a data feed) | Full delivery + compliance platform |
| Runs your dealership? | No — data only | Yes — routes, tickets, invoicing, compliance |
| Degree-day data | Yes (its whole product) | Yes, built in from NWS/NOAA, free |
| K-factor auto-calibration | No | Yes |
| Offline driver app | No | Yes |
| DVIR / cylinder compliance | No | Yes |
| Pricing | $9–$39/mo API (data only) | One-time license (whole system) |
Comparison reflects Degree Days Online's published profile as of 2026; "varies" means it depends on the module or plan you buy. See our verification notes for sources.
When Degree Days Online is the right choice
If you already run a delivery platform and only need a clean degree-day data feed to plug into it, Degree Days Online is a fine component — but it is a data source, not a system to run your dealership on. We would rather send you to the right tool than sell you the wrong one. And FillDesk Pro is deliberately narrow: FillDesk Pro is deliberately focused on delivery, forecasting, and compliance for small dealers. It does not currently include advance-purchase or capped-price fuel plans, level monthly even-payment plans, automated fuel-excise tax calculation or excise-return exports, a homeowner web login, or advanced receivables tools such as automated late-fee assessment and end-of-day driver cash totals. If those are central to how you operate, a heavier platform may serve you better — and during a pilot we will tell you honestly if that is the case. If those capabilities are core to how you run, Degree Days Online or another heavier platform is likely the better fit — and during a free pilot we will tell you so directly.
Pilot program
The fair way to compare software is to run it. FillDesk Pro's three-month pilot puts the real product on your real routes, free, with nothing owed until you decide. Related: degree-day forecasting in FillDesk Pro, forecasting for dealers.