FAQ
What it is, who it is for and how to start.
What is Turfgrass Mastery OS?
Turfgrass Mastery OS (TMOS) is the operating system of golf course maintenance: a browser-based platform that brings the greenkeeping tools together — operations board and staff scheduling, mobile field logging, fleet maintenance and spare parts, irrigation management, disease pressure models, application records, budgeting and investment analysis, compliance, and carbon footprint and ESG reporting. Every course works on its own profile and the tools talk to each other: data is entered once.
Who is it for?
The course superintendent (head greenkeeper), their assistants, the greenkeeping staff, and the general manager and board. The superintendent gets the daily tools and a clear basis for communication; management gets the figures and reports from the same system. The interface is Finnish, Swedish or English per user.
What does it cost?
Foundation, €3,990 per year, opens disciplines 01–03 (operations, fleet management, turf tools). Mastery, €5,990 per year, opens the whole platform. Disciplines can be added to Foundation as modules at €990 per year (Development and Turf Doctor €1,990). Pricing is per course with unlimited users. Agronomist site visits and half-year reviews are priced in the offer calculator.
Who owns the data?
The course. The course is the data controller and Turfgrass Mastery the processor: data is handled only on the course's behalf and is never sold or shared. The course's own contract price, wages and personal data are visible only to the roles they belong to.
How is AI used?
The TMOS Assistant and Report Studio draft from the course's own data — every number comes from the system's facts, never from the model's memory. AI never commands machines or irrigation and never evaluates staff; a person reviews and publishes. The practice is described on the privacy page in line with the EU AI Act. The platform also offers an MCP server so a course's own AI assistant can read its data with permission.
Which devices and services connect to it?
Weather stations (Davis WeatherLink, Spectrum WatchDog), soil sensors (Soil Scout), robotic mowers (Husqvarna Automower Connect, Kress), irrigation measurement data (Second Sun, POGO, TurfRad reports, the Toro Lynx station database), tee-sheet systems (WiseGolf), the grid emission factor (Fingrid) and partner services such as GolfBooker. Open weather data comes from Open-Meteo and MET Norway Locationforecast.
Does it work on a phone on the course?
Yes. The Field Logger runs in the phone's browser with a PIN login: working time, clippings, meter readings and refuelling, observations, pre-use inspections, playing quality, goods received and machine service. QR labels on machines open the machine's card straight from the camera.
How do we start?
Open the 24-hour demo on the Hirsala Golf showcase profile without a payment card, or model the engagement in the offer calculator. Every subscription starts with a conversation about your course — Turfgrass Mastery activates the course personally and it starts empty, with its own data.
Where was it developed and tested?
At the Hirsala Golf Living Lab in Finland: the tools are validated on a real course under Nordic conditions — snow mould, a short growing season and a cold winter. Finnish terminology is audited against the greenkeeping glossary; Swedish follows the STERF vocabulary.