Comparison

RoadMaster vs Marlin

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RoadMaster

This service provides detailed road weather forecasts for winter maintenance operations. It offers real-time decision support data, alerts for slippery conditions, and precipitation type radar. Access detailed road conditions and hourly forecasts on the go.

Highlights
  • Detailed road weather forecasts
  • Real-time decision support data
  • Slippery condition alerts
  • Precipitation type radar
  • Animated satellite images
  • Hourly forecast tables and graphs
Features
Read full description

RoadMaster is a professional service available to DTN’s customers only. DTN offers the world's most comprehensive range of dedicated forecast solutions for winter maintenance operations. RoadMaster has been developed specifically to support field-based operations for winter maintenance. With detailed road weather forecasts produced 24/7/365, all those involved in winter operations now have access to real-time decisions support data on the go. The RoadMaster dashboard provides alerts when slippery conditions are forecast or when the amount of snow or maximum wind gusts are forecast to exceed a pre-determined threshold in the next 24 hours. The dashboard also displays more detailed information such as minimum road surface temperatures and the road conditions for local Road Weather Information Systems and domains. Hourly road weather forecasts are presented in easy to use color-coded tables and graphs. RoadMaster also includes DTN’s unique real-time and forecasted precipitation type (rain, rain/snow, snow, freezing rain, and hail) radar and real-time animated satellite images.

About

Marlin

Features
Read full description

The living pulse of your coastline. Marlin turns every marina into a live window on the sea. A network of solar-powered sensor stations measures the real conditions in the harbor and delivers them live, so you always know what the water is doing right now. Six live values, around the clock: water temperature, wave height, wind, water level, air pressure and air temperature. BUILT FOR THE PEOPLE ON THE COAST Sailors: check wind and waves at your marina before you head out. Harbor masters and operators: keep the whole port in view, right from the office. Research and curious minds: explore reliable, continuous coastal data. WHY MARLIN Hyperlocal, not regional. We measure at the exact marina, where general forecasts fall short. Measured, not modeled. Real sensor readings, not distant predictions. Live and continuous. Always current, and always building a long-term record. FEATURES Live sensor map: see real-time conditions across every marina at a glance. Detailed dashboards: dive into the full picture for each station. History and trends: explore past measurements and spot patterns over time. Smart notifications: get push or email alerts the moment a reading crosses your threshold. Open data: transparent access that supports research and innovation across the maritime sector. Born from ocean research in Kiel, Marlin makes the coast readable for everyone who depends on the water. Your coast, live. Download Marlin and see what your marina is doing right now.

Screenshots

RoadMaster4 screens
Marlin4 screens

Verdict

The call

The clearest difference is iOS requirement: RoadMaster at 11.0 against Marlin's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RoadMaster ships an update every 6 weeks, Marlin every 5 weeks. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 7 level
RoadMaster versus Marlin: the parameters behind the verdict, then further details
ParameterRoadMasterMarlin
PriceFreeFree
Positive reviews20.0% of reviews—
Update frequencyEvery 6 weeksEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size36 MB37 MB
Age rating4+4+
DeveloperDTN Germany GmbH.Tarek Almohamad

In-app purchases

None

RoadMaster

No in-app purchases

None

Marlin

No in-app purchases

Questions

Is RoadMaster free?
RoadMaster is free to download, with no in-app purchases.
Is Marlin free?
Marlin is free to download, with no in-app purchases.
Do RoadMaster or Marlin have ads?
Neither RoadMaster nor Marlin shows ads.
Which is updated more often, RoadMaster or Marlin?
RoadMaster ships an update every 6 weeks, and Marlin every 5 weeks. Most recently, RoadMaster was updated on October 3, 2026 and Marlin on October 5, 2026.

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