Start with the licence and the legal entity
The first filter is who actually runs the site and which authority watches it. LottoGo lists the UK Gambling Commission as its regulator, and the operating name behind it is Annexio (Jersey) Limited. That pairing tells you which market you are dealing in and the body that supervises the operator.
Synot Tip SK names Urad pre regulaciu hazardnych hier (URHH) as its regulator, and its licence number is 000420/2024. The legal entity is SYNOT TIP, a.s., operating since 1996. A named licence and a named operator are the minimum you should accept from any lottery site before you look at anything else.
Read a bonus as a package, not a headline
Both operators run a welcome bonus, and both set wagering on the bonus rather than on your deposit, so a headline cash figure tells you very little on its own.
LottoGo's offer is 100% up to £200 + 100 Free Spins UK, with wagering of 10. Synot Tip SK's offer is SK: 100% match to 4 000 EUR, 10 000 EUR total, a match of 100% on the opening deposit and a bonus cap of €10,000, with wagering of 15 to 30. The multiplier decides how much turnover you owe before a bonus becomes withdrawable money, so put that next to the cap rather than underneath it. Free bets also appear among Synot Tip SK's bonus types (free bet), which changes the arithmetic again for anyone who plays games rather than draws.
Compare the deposit floor
A low entry point matters for anyone who wants to test a site with a small first payment. LottoGo lists a minimum deposit of £1, and Synot Tip SK lists €0.50.
Across the listings we hold, minimum deposits run €0.01 to €43.85, so those two figures sit at very different points in the range you will meet in practice. Treat a small floor as a practical detail only: it says nothing about the bonus terms, the licence or how quickly you could get money back out.
Payments and withdrawal times
Deposit options and cash-out speed belong in the same row, because a fast withdrawal is worth little if you cannot fund the account. LottoGo accepts PayPal, Apple Pay, Google Pay, debit cards and bank transfer, and its withdrawal time is 24.
Synot Tip SK accepts bank transfer, payment card, direct bank deposit, Aircash and cash at terminal, and its withdrawal time is 0, with Instant payout to payment card given as the stated arrangement. Fast payouts also sit among its listed features (fast payouts, virtual sports and mobile app), and it does offer live dealer games. A cash-out note on file is a starting point for comparison, not a promise, so check the stated time on the review page before you rely on it.
Look at what sits beside the lottery
Lottery sites rarely sell lottery only, and the surrounding products tell you which kind of player an account suits. LottoGo is built around lottery play (lottery) and lists slots and live games among its game types (slots and live).
Synot Tip SK runs poker and lottery (poker and lottery) across slots, live, table, blackjack and roulette (slots, live and table), plus a bookmaker covering football, ice hockey, tennis, basketball and social events. Its games total 1,000. Someone who wants draw-led play with a small casino section is a different target from someone who wants a single account covering several kinds of bet, and the game list settles that faster than the bonus does.
Safer play tools and support
Check what an operator offers for controlling play before you deposit anything. Synot Tip SK lists self-exclusion among its safer play tools (self exclusion), and its approach to identity checks is recorded as required.
Support matters most when a payment or a bonus term goes wrong. LottoGo offers chat and a help centre (chat and help centre), while Synot Tip SK offers email and phone alongside chat and a help centre (email, chat and phone). A self-exclusion setting you can reach from your own account, and a support route that answers in writing, are the two features worth insisting on.
Play is for adults only and a minimum age applies. If stopping becomes difficult, self-exclusion is the setting to use first, and no bonus should ever be a reason to continue.
Put the rows into a fixed order
The online lottery sites rankings line these operators up in one place, and reviews for Camelot / The National Lottery and Svenska Spel give useful reference points if you want a wider shortlist.
A workable order runs: licence and legal entity, then the bonus wagering multiplier, then the minimum deposit, then the stated withdrawal time, then the safer play tools. Read in that order, a lower wagering multiplier and a documented withdrawal time outweigh a larger headline offer, and a self-exclusion option belongs at the end of the check rather than the start of it.
None of this is a recommendation to play. Its purpose is to let you shortlist a handful of sites, read their terms and reviews, and decide for yourself whether any of them suits an adult who may or may not play at all.