About ABA Cards
ABA Cards is an education app from developer Luden.io, installed under the package name com.ludenio.r8rf. It is a self-contained download aimed at learners and practitioners who want card-based study material ready on an Android phone or tablet.
Card-based study in one focused app The name points to a flashcard-style approach, where material is worked through one card at a time instead of as a single long document. Because the title is filed under the education category, it is positioned as a study companion rather than a game or a general utility, keeping the emphasis on steady review and on moving through content at your own pace.
Current build and release date The latest available build is version 0.5.1, released 2025-10-04. Its version number indicates a project that is still taking shape, so later releases may adjust the card content, layout or stability. If you are tracking a particular build, confirm that the version shown here is the one you actually install.
Space the download takes The package weighs 90.4 MB, a moderate footprint for an education title and one that sits comfortably on most current handsets. Leave a little extra room beyond that figure for the installer itself and for anything unpacked on first launch, and a Wi-Fi connection is the calmer choice if your mobile data allowance is tight.
Which devices can run it The build requires Android 7.0 or newer. Handsets sitting below the required version will not be offered the package at all, while newer devices with more storage and processing headroom will simply carry the card sessions more smoothly.
APK Information
- Version
- 0.5.1
- Size
- 90.4 MB
- Android
- 7.0+
- File type
- APK
- Updated
- Oct 4, 2025
- Package
- com.ludenio.r8rf
- Developer
- Luden.io
Features
Education
Card-Based Study
Single Focused Package
Frequently Asked Questions
Which Android version do I need to install ABA Cards?
The listing specifies a minimum of Android 7.0, and the build will only be offered to devices meeting or exceeding that line. If your phone or tablet is older, the installer will be blocked before it starts. Devices running the required version or a newer release should install the package normally, and newer devices will generally have the storage and processing headroom to run the card sessions comfortably.
How much storage should I free up first?
The package itself is 90.4 MB, so plan for at least that much free space before you begin. On top of the package, some room is needed for the installer and for any files unpacked during the first launch, so clearing roughly a couple hundred megabytes avoids a failed install. If storage is tight, remove unused apps or move media to a card or cloud service first.
What version will I be getting?
The current release listed for ABA Cards is version 0.5.1, published 2025-10-04 by developer Luden.io. Always compare the build shown on this page with the version reported after installation so you know you have the latest package rather than an older one. Because the version number is still low, further updates are likely as the app matures, so checking back periodically keeps the build current.
What kind of app is ABA Cards?
It is an education app distributed under the package name com.ludenio.r8rf. Its title suggests a card-based format, where study material is presented as individual cards that you work through sequentially rather than reading as one continuous document. It is developed by Luden.io and is aimed at anyone wanting focused, repeatable practice sessions on a mobile device rather than a broad entertainment experience.
Is a content rating shown for this app?
No. The content rating for ABA Cards is listed as unknown, so no age guidance accompanies this listing. That means you should judge suitability yourself by looking at what the app contains once installed, particularly if it will be used by a younger learner. The category recorded for the app is education, which gives a general indication of its intended use.
