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ANDROID APP

Outline 1.21.5 XAPK

Download Outline for Android as XAPK. Review the published package, device compatibility, version history, and installation guidance. version 1.21.5.

Outline Foundation
Download XAPKUse an installer that supports XAPK packages.
Version1.21.5
Version code496766
File size15.8 MB
UpdatedOct 7, 2026
Minimum Android SDK29
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Outline screenshots

Outline screenshot 1Outline screenshot 2Outline screenshot 3Outline screenshot 4
VERSION HISTORY

Older versions of Outline

VersionRelease dateSizeArchitecture
1.21.5Code 496766Oct 7, 202615.8 MBARM64Current page1.21.4Code 496725Oct 7, 202643.3 MBARM64, ARM 32-bit, x86 32-bit, x86 64-bitView details1.21.0Code 495734Oct 7, 202644.9 MBARM64, ARM 32-bit, x86 32-bit, x86 64-bitView details
FAQ

Installing Outline

Will this package work on my device?

Check the Android SDK and CPU architecture listed above. The final installation result also depends on your device software and the app's own requirements.

What if Android blocks the installation?

Check the browser or installer permission to install unknown apps. If another build is already installed, a different signing certificate or version downgrade may prevent installation.

Why is this download an XAPK rather than a single APK?

This version includes a base APK and required configuration splits. Download the complete XAPK and use a compatible installer; opening one split alone may fail.

GUIDES

Installation guides

More guides
Why Can't base.apk Always Be Installed by Itself?A base.apk can be a complete standalone APK or only the base module of a Split APK set. Learn to identify missing ABI, DPI, language, or feature splits and install the complete set correctly.APK Installation Failed? Common Causes and SolutionsWhen an APK fails to install, check the exact error, file integrity, Android version, CPU architecture, signature, split packages, storage, and system restrictions before removing an existing app.APK Installed but Won't Open or Keeps Crashing?A successful APK installation does not guarantee runtime compatibility. Diagnose missing icons, an app that does not respond, startup crashes, and feature-specific crashes by checking split packages, ABI, Android version, and app data.arm64-v8a, armeabi-v7a, or x86_64? How to Choose the Right APKNot sure which APK to download? Learn how Android ABIs, CPU architecture, screen density, and minimum Android versions affect compatibility.APK vs AAB: Development, Publishing, and Installation ComparedUnderstand the different roles of APK and Android App Bundle, including installation, signing, package size, split APKs, and store publishing.
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