The latest version of Castle App for Android phones and tablets. Direct APK download with verified file integrity, mirror links, and a step-by-step install guide below.
Ready for Android
54.2 MB verified APK for phones and tablets running Android 6.0+.
This is the latest official version of Castle App for Android. Below is the complete file information so you can verify what you're downloading before you install.
Looking for the version specifically built for Android Smart TVs and Fire TV Stick? Download the dedicated Castle TV APK (v1.1.2, 20 MB) →
Looking for an older release of Castle? See full Castle App version history →
Once the APK has finished downloading, follow these 5 steps to install Castle on your Android device. The whole process takes about 2 minutes.
Android will ask whether to allow this app to install other apps. Tap Settings, toggle "Allow from this source" on, then tap the back button to return.
You only need to grant this permission once — Android will remember it for future installs from the same source.
On many Android phones, Google Play Protect scans every APK at install time. When you install an app distributed outside the Play Store — like Castle — Play Protect may show a notice saying the app is "not verified" or warning you to be cautious.
This is a routine notice, not a warning that the app is harmful. Play Protect shows it for any APK that hasn't been reviewed by Google's Play Store team — it does not mean the file is malicious.
Tap "More details" on the warning screen, then tap "Install anyway" to continue. Installation proceeds normally from there.
The official Castle APK is malware-scanned before every release and passes Play Protect's actual security check cleanly — the "not verified" notice only refers to Play Store review status.
Most Castle installations finish without trouble. When something does go wrong, it's usually one of these three reasons:
