Answered with numbers you can check — including ours.
Accuracy on its own is the wrong question. A prediction only has to be more accurate than the price implies, not accurate in absolute terms. Beating the market by a small margin, consistently, is what produces profit - and the market is a genuinely hard opponent, because it aggregates enormous amounts of money and information.
Most services do not clear it. Bookmaker margins take several percent before anything else happens, closing lines move against you when you bet well, accounts get limited when you win consistently, and variance is large enough that a hundred picks tells you very little.
An honest expectation: a genuinely good model produces a low single-digit to low double-digit ROI over a large sample, with long losing stretches inside it. For reference, MalluSports currently shows 10.5% ROI over 93 settled picks - a sample far too small to be conclusive, which is why the raw rows are published rather than the headline.
Anyone advertising guaranteed profit, or a strike rate with no odds attached, is describing marketing rather than a result. Treat published, checkable, loss-inclusive records as the only evidence worth weighing.
MalluSports is a free prediction and analysis service only. It accepts no bets, holds no funds, operates no gambling platform and holds no gambling licence. Betting carries real financial risk. 18+ · begambleaware.org