An APK (Android Package Kit) is the file format Android uses to install an app. Google Play handles it for you behind the scenes; downloading one yourself from a website is called sideloading. For UK casino apps, the licensed operators we cover are on Google Play, so you normally have no reason to touch an APK.
An APK is the installer file behind every Android app.
Installing one from outside Google Play is called sideloading and skips the store's checks.
Since Android 8.0, you must allow each app (such as a browser) to install unknown apps separately.
Coral, Ladbrokes, PlayOJO, Casumo and 10bet all list their Android apps on Google Play in the UK.
Stands for
Android Package Kit
Used on
Android phones and tablets
Install route
Google Play or sideloading
Install permission
Per-app since Android 8.0 (Oreo)
Safety check
Google Play Protect
What APK means
APK is short for Android Package Kit. It's a single file that bundles an app's code, images and settings so Android can install it. Every app on an Android phone arrived as one, whether you noticed or not.
When you tap install in Google Play, the store fetches the package, checks it and installs it for you. When you download an APK file from a website and open it yourself, you are sideloading. The file format is the same; what changes is who checked it first. The wider casino app glossary has more Android terms.
Google Play install vs APK download
Two ways an Android casino app can reach your phone
Google Play install
APK download (sideloading)
Who checks it first
Google Play runs a safety check before download
Nobody before you open it; Play Protect may scan it afterwards
Licence check for gambling
Google requires a valid licence for each country
No store check at all
Updates
Delivered through the store
You fetch each new file yourself
Permission needed
None beyond the store
You must allow an app to install unknown apps
Age rating
PEGI 18 shown on the listing
No rating shown
That second row is the one that matters for gambling. Google's real-money gambling policy (opens in a new tab) says a developer needs a valid gambling licence for every country where the app is distributed, and must keep out under-18s and anyone outside the licensed area. An APK passed around on the web carries none of those assurances.
How APK installs work on Android
Older Android versions had a single switch that allowed installs from unknown sources. In August 2017 Google explained that, from Android 8.0 Oreo, this became a per-app permission (opens in a new tab). You now approve a specific app, such as your browser or file manager, before it can prompt an install, and you can take that approval back at any time.
Google Play Protect adds another layer. Google says it runs a safety check on Play Store apps before download and also checks your device for potentially harmful apps from other sources. It can warn you, ask to send an unknown app for deeper analysis, and switch off or remove apps it judges harmful. Our guide to Google Play Protect and casino apps goes further.
Do UK casino apps need an APK?
For the licensed brands we review, no. Google's country list for gambling apps includes the United Kingdom for online casino games, and Google named the UK among its permitted countries in January 2020. Each of our five partners has an Android listing available in Great Britain.
The package ID is the app's unique name inside Android, and it appears in the Google Play web address. If a site offers a file claiming to be one of these apps, the safer move is to ignore it and install from the store listing instead. Our page on why some casino apps are not on Google Play explains the exceptions.
APK risks to weigh before sideloading anything
No licence check. A file on a website hasn't passed Google's gambling application, so it could come from an operator with no UK licence and no Gambling Commission protection.
Tampered copies. A package can be repackaged with extra code; only the store route ties it to the named developer.
Missed updates. Security fixes arrive through the store, and a sideloaded copy can quietly fall behind.
Lingering permissions. If you allowed your browser to install apps once, that approval stays until you remove it.
If you have already sideloaded something, go to your phone's settings, find the app you allowed to install unknown apps and switch that permission off. Then run a Play Protect scan. Our guide is it safe to download a casino APK walks through it.
Related Android and app terms
An APK sits alongside several other words you'll see on casino app pages. A native app is one built for the phone's own system, and almost every Android native app arrives as an APK. Play Protect is Google's scanning service, and an app store listing is the public page where you install from. On Android tablets the same rules apply; see casino apps on Android phones.
Licensed casino apps you can install without an APK
Each partner below has a Google Play listing, so there is no file to hunt down. These offers are for 18+ new customers and terms apply.
Coral: bet £10 or more on slots after depositing to receive 100 free spins (10p each, selected slots), which you accept within 48 hours and use within 7 days; spin winnings have no wagering. Offer dates 1 October 2026 to 1 February 2027. Deposits by PayPal, Skrill, Neteller, Paysafe, prepaid cards and certain debit cards are excluded.
Ladbrokes: deposit and play £10 on slots to collect 50 free spins every day for the first 10 days, up to 500 in total, each worth 10p on selected games. Claim each batch before 23:59; they last 7 days and carry no wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers don't count.
PlayOJO: 80 free spins on Big Bass Bonanza at 10p each with a first deposit of £10 or more, winnings paid in cash with no wagering. Available to new UK customers outside Northern Ireland via the designated link only, not with other offers.
Free spins are slot offers; table and live games aren't part of them. Whatever app you use, set a deposit limit first and treat play as paid entertainment.
Coral and Ladbrokes are both run by LC International Limited (Entain). If you already hold an account with one Entain brand, you may not be able to open another; check the terms first.
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. GamCare.org.uk
Read our Coral app reviewLicence: LC International Limited, Gambling Commission account 54743. Offer checked 5 October 2026.
Time limitClaim daily for 10 days; each batch valid 7 days
Worked valueUp 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. GamCare.org.uk
Read our Ladbrokes app reviewLicence: LC International Limited, Gambling Commission account 54743. Offer checked 5 October 2026.
Significant terms: 18+. New UK customers (excluding Northern Ireland). 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. GamCare.org.uk
Read our PlayOJO app reviewLicence: Skill On Net Limited, Gambling Commission account 39326. Offer checked 5 October 2026.
18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.
Frequently asked questions
What does APK stand for?
APK stands for Android Package Kit. It's the file type Android uses to install apps, holding the code and resources in one bundle. Every app on an Android phone is installed from one, but Google Play normally handles the file for you so you never see it. Downloading an APK from a website yourself is called sideloading. Our sideloading definition explains the difference in more detail.
Is it safe to install a casino APK?
It carries more risk than installing from Google Play. A sideloaded file hasn't passed Google's checks, including its requirement that gambling apps hold a valid licence for each country they serve. The file could be tampered with or come from an unlicensed site with no UK protection. Since the licensed brands we cover are all on Google Play, the store is the safer route. Read is it safe to install a casino APK.
Why would a casino offer an APK instead of a Play Store app?
A licensed UK operator has little reason to, because Google Play accepts licensed gambling apps in the UK. A download offered only as an APK is therefore a reason to look harder at who runs the site and whether it appears on the Gambling Commission's register. Our guide to why some casino apps are not on Google Play covers the legitimate reasons an app might be missing.
Can I install an APK on an iPhone?
No. APK files are an Android format and won't run on an iPhone or iPad. Apple devices install apps through the App Store, where real-money gambling apps must be licensed, geo-restricted and free to download. If you're on iPhone, search the App Store for the brand's listing instead. Our guide to downloading a casino app on iPhone covers the steps.
How do I stop my phone installing unknown APKs?
Remove the install permission from any app you previously allowed. Since Android 8.0, each app needs its own approval to install unknown apps, and you can revoke it whenever you like in your phone's settings. Keeping Play Protect switched on adds a scan for harmful apps from outside the store. For blocking gambling apps more broadly, see blocking casino apps with Digital Wellbeing.
Does an APK casino app get updates?
Not automatically through Google Play. Apps installed from the store receive updates there, while a sideloaded copy usually needs a fresh file downloaded and installed each time. That makes it easy to fall behind on security fixes, which the NCSC advises installing as soon as they're available. Our guide on how to update a casino app explains the store route.
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