Why can't I install DuoCards - Vocabulary Builder?

The installation of DuoCards - Vocabulary Builder may fail because of the lack of device storage, poor network connection, or the compatibility of your Android device. Therefore, please check the minimum requirements first to make sure DuoCards - Vocabulary Builder is compatible with your phone.

How to check if DuoCards - Vocabulary Builder is safe to download?

DuoCards - Vocabulary Builder is safe to download on APKPure, as it has a trusted and verified digital signature from its developer.

How to download DuoCards - Vocabulary Builder old versions?

APKPure provides the latest version and all the older versions of DuoCards - Vocabulary Builder. You can download any version you want from here: All Versions of DuoCards - Vocabulary Builder

What's the file size of DuoCards - Vocabulary Builder?

DuoCards - Vocabulary Builder takes up around 17.0 MB of storage. It's recommended to download APKPure App to install DuoCards - Vocabulary Builder successfully on your mobile device with faster speed.

XAPK

DuoCards - Vocabulary Builder

DuoCards

1.20.18Old Versions

17.0 MB
Size
20K+
Downloads
Everyone
Sep 3, 2026
Update date

What's New in the Latest Version 1.20.18

Sep 3, 2026

Build vocabulary with AI flashcards and video lessons Download the latest version of DuoCards - Vocabulary Builder 1.20.18 to enjoy new features and updates immediately!

Learn more wherever you are with reliable offline study and syncing. Create personalized card sets with AI, get detailed pronunciation feedback, and practice with richer roleplays and comprehension exercises. We also added language-level progress, mobile deck export, and easier set search—plus many fixes and performance improvements.

DuoCards - Vocabulary Builder FAQ

How much storage space do I need to install DuoCards - Vocabulary Builder ?

The download APK file is 17.0 MB, and you’ll need additional free space to install the app and store temporary files, updates, and cache data. If the installation fails, free up some storage and try again.

How long does DuoCards - Vocabulary Builder take to download?

DuoCards - Vocabulary Builder is 17.0 MB. On a stable 4G, 5G, or Wi-Fi connection, the download may take anywhere from a few seconds to several minutes, depending on your network speed.

Why do I fail to download or install?

Common causes include insufficient storage, an incompatible Android version, an unstable network connection, a corrupted download, or missing installation permissions. See our download and installation troubleshooting guide for step-by-step solutions.

What are the system requirements for DuoCards - Vocabulary Builder ?

The latest version of DuoCards - Vocabulary Builder requires Android 7.0+ or later. If your device runs an earlier Android version, check whether a compatible older version of the app is available.

What are APK and XAPK files, and how do I install them?

When downloading, you'll find two types of installation files: - APK: A standard Android installation file, ideal for devices that don't require extra data. Download and install directly. - XAPK: Includes the APK and additional resources (e.g., OBB files) for larger apps or games. Use an XAPK installer like APKPure to install. Learn more about installing APK and XAPK files.

More App Info

Package Name
com.duocards.app
Requires Android
Android 7.0+ (N, API 24)
Content Rating
Everyone
Architecture
universal
App Permissions
App Permissions
android.permission.INTERNET
android.permission.RECORD_AUDIO
android.permission.ACCESS_NETWORK_STATE
com.google.android.gms.permission.AD_ID
android.permission.READ_EXTERNAL_STORAGE
android.permission.GET_ACCOUNTS
android.permission.USE_CREDENTIALS
android.permission.VIBRATE
com.android.vending.BILLING
com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
com.android.vending.CHECK_LICENSE
android.permission.POST_NOTIFICATIONS
android.permission.WAKE_LOCK
com.google.android.c2dm.permission.RECEIVE
android.permission.ACCESS_ADSERVICES_ATTRIBUTION
android.permission.ACCESS_ADSERVICES_AD_ID
android.permission.RECEIVE_BOOT_COMPLETED
android.permission.FOREGROUND_SERVICE
com.duocards.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
com.sec.android.provider.badge.permission.READ
com.sec.android.provider.badge.permission.WRITE
com.htc.launcher.permission.READ_SETTINGS
com.htc.launcher.permission.UPDATE_SHORTCUT
com.sonyericsson.home.permission.BROADCAST_BADGE
com.sonymobile.home.permission.PROVIDER_INSERT_BADGE
com.anddoes.launcher.permission.UPDATE_COUNT
com.majeur.launcher.permission.UPDATE_BADGE
com.huawei.android.launcher.permission.CHANGE_BADGE
com.huawei.android.launcher.permission.READ_SETTINGS
com.huawei.android.launcher.permission.WRITE_SETTINGS
android.permission.READ_APP_BADGE
com.oppo.launcher.permission.READ_SETTINGS
com.oppo.launcher.permission.WRITE_SETTINGS
me.everything.badger.permission.BADGE_COUNT_READ
me.everything.badger.permission.BADGE_COUNT_WRITE
App License
Required
Feedback
Signature
ca219a12d06084d34222fd3adecbc4204b3f50ab
Developer Verification
Verified