Slots apps compared
| App | Reported library | Welcome offer | Wagering | Slots score |
|---|
| Coral | 2,000+ games (some reports put it far higher) | Bet £10 on slots, get 100 free spins | None | 8.5/10 |
|---|
| Ladbrokes | 2,000+ games | Play £10 on slots, get up to 500 free spins | None | 8.5/10 |
|---|
| PlayOJO | 2,000+ games (reports range to 7,000 and above) | 80 free spins, no wagering | None | 8.5/10 |
|---|
| Casumo | 3,500+ games | 50% bonus up to £100 | 10x bonus | 9.0/10 |
|---|
| 10bet | 2,000+ games (reports range from 1,200) | 100% bonus up to £25 | 10x bonus | 8.0/10 |
|---|
Scores and casino details are our editorial assessment, based on each casino's published terms and on recent independent reviews. Game counts and payout times vary between sources and change often, so check the lobby and cashier yourself.
Slot offers in the apps
Ad 18+ only. We may earn commission from these links. Advertiser disclosure
Coral Casino ★ 4.3 out of 5
Bet £10 on slots, get 100 free spins
No wageringFree spins
- Wagering
- None
- Minimum
- £10
- Time limit
- 48 hours to accept, then 7 days
- Worked value
- 100 spins at £0.10 (£10 in spins)
Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. BeGambleAware.org
Ladbrokes Casino ★ 4.2 out of 5
Play £10 on slots, get up to 500 free spins
No wageringFree spins
- Wagering
- None
- Minimum
- £10
- Time limit
- Claim daily for 10 days; each batch valid 7 days
- Worked value
- Up to 500 spins at £0.10 (up to £50 in spins)
Significant terms: 18+. New customers only, from 14/11/25 until further notice. Certain deposit methods excluded. Deposit and spend £10+ on slots for 50 free spins a day during the first 10 days after first deposit and registration (max 500, £0.10 each, selected games, claim before 23:59 each day, valid 7 days). No wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits do not qualify. Restrictions and T&Cs apply. BeGambleAware.org
PlayOJO ★ 4.2 out of 5
80 free spins, no wagering
No wageringFree spins
- Wagering
- None
- Minimum
- £10
- Time limit
- See offer terms
- Worked value
- 80 spins at £0.10 (£8 in spins)
Significant terms: 18+. First deposit only. Minimum deposit £10. 80 free spins on Big Bass Bonanza, £0.10 each. No wagering requirements; winnings paid in cash. Cannot be used with any other offer. Only available to players who arrive through the designated offer link. Full T&Cs apply. BeGambleAware.org
Casumo ★ 4.2 out of 5
50% bonus up to £100
10x wageringMatched deposit
- Wagering
- 10x bonus
- Minimum
- £20
- Time limit
- 7 days to complete wagering
- Worked value
- Deposit £200, get £100 bonus
Significant terms: 18+. New customers only. Opt-in required. 50% deposit bonus up to £100 on first deposit. Minimum deposit £20. 10x wagering on the bonus amount. Maximum bet or spin £5. Bonus valid for 7 days. Game, play and payment method restrictions apply. Full T&Cs apply. BeGambleAware.org
10bet Casino ★ 3.8 out of 5
100% bonus up to £25
10x wageringMatched deposit
- Wagering
- 10x bonus
- Minimum
- £10 (check at sign-up)
- Time limit
- 3 days to complete wagering
- Worked value
- Deposit £25, play with £50
Significant terms: 18+. New UK customers only. Select the casino welcome bonus at sign-up and make your first deposit within 7 days. 100% bonus up to £25. Wager the bonus 10x on slots within 3 days. Maximum bonus winnings £1,000. Bonus is not redeemable. Full T&Cs apply. BeGambleAware.org
How slots run in an app
Modern slots are built in HTML5, so the same game runs in an app, a phone browser and on a desktop. The random number generator, paytable and the RTP setting your casino has chosen do not change with the device. What changes is layout: buttons move under your thumb and most games work in portrait.
Seven popular slots and their numbers
| Slot | Developer | Default RTP | Volatility | Max win |
|---|
| Big Bass Bonanza | Pragmatic Play | 96.71% | High | 2,100x |
|---|
| Starburst | NetEnt | 96.09% | Low | 500x |
|---|
| Sweet Bonanza | Pragmatic Play | Varies by version (96.48% to 96.51% quoted) | High | 21,100x |
|---|
| Gates of Olympus | Pragmatic Play | 96.50% | High | 5,000x |
|---|
| Book of Dead | Play'n GO | 96.21% | High | 5,000x |
|---|
| Fishin' Frenzy | Blueprint Gaming (Reel Time Gaming) | 96.12% | Medium to high | 5,000x |
|---|
| Fluffy Favourites | Eyecon | 95.39% | High | 5,000x |
|---|
Developers' published defaults, each confirmed against at least two sources. Casinos may run lower RTP settings; check the help screen in the game. Not every app carries every title.
The rules do not change on mobile
- Maximum stake £5 a spin, or £2 for ages 18 to 24.
- At least 2.5 seconds between spins.
- No autoplay and no bonus buy.
- Net position and session time shown on screen.
More in the UK rules guide.
What suits a phone screen
Five-by-three slots such as Starburst and Big Bass Bonanza are the easiest to read in portrait. Six-by-five pays-anywhere games such as Gates of Olympus are busier but were designed with phones in mind. On a tablet almost anything is comfortable; see tablet apps.
More on free casino apps and payout percentages.
Free play in apps
Most slots have a demo mode. UK casinos must verify your age before letting you use it, so you will need to register first. Demo availability varies between apps.
Welcome spins on mobile
The three wager-free spins offers are compared on free spins on casino apps.
Play safely
Set a deposit limit before you play and treat every deposit as money spent. Free, confidential help: National Gambling Helpline 0808 8020 133, or our safer gambling page.
Offer terms dated 5 October 2026; app and casino details as reported. How we check and rate.
