The Challenge
A value model is only as good as the data beneath it
At the heart of Fine Line lies one ambition: replace guesswork with logic. Betting, for many, is driven by emotion or gut feeling. Fine Line challenges that by letting users take a mathematical, data-informed route instead. Its internally developed odds model calculates the "true" probability of match outcomes, then compares those expected odds against bookmakers' odds to uncover value bets, cases where the available price is higher than the calculated probability suggests it should be.
To build it, Svenn needed more than scores and standings. He needed up-to-date odds across multiple bookmakers, deep player and team statistics, flexible filtering for trend analysis and modeling, and data stability and coverage across global leagues. Several providers were tested, but each came with trade-offs. Some lacked full coverage, others had confusing APIs, and many fell short on speed or support. Every delay meant time lost on features, and the development cycle was constantly slowed by patching data gaps.
"We tested four different APIs before we found Sportmonks. Each one fell short in a critical area: either poor documentation, unreliable uptime, or missing data."
Svenn Grønbeck · Founder, Fine Line
