Support

How can we help?

Pick the fastest route below. Most issues are solved with a quick restore, one settings check, or a pre-filled email that gives us exactly what we need to help.

Install issue Enable "Install unknown apps" for your browser or file manager
Common issue Check decks remaining if the true count looks off
Compatibility Android 7.0+ required
Fastest paths
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Report a Bug

Count behaving unexpectedly, a button not responding, or the app crashing? Use this template so we can reproduce it faster.

Open bug report email →
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Install Help

APK won't install, or Android is blocking the download? Describe the exact prompt or error and we'll walk you through it.

Open install help email →
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Counting System Help

Questions about Hi-Lo, KO, Wong Halves, or true count conversion? Send the exact scenario and we will help break it down.

Ask a counting question →
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Feature Request

Have an idea that would improve training, edge tracking, or system selection? We actively review future feature requests.

Send a feature request →
Quick answers
How do I install the APK?
Download the APK from the download page, which has step-by-step install instructions. Open the file on your device. The first time you install from your browser or file manager, Android asks whether to allow installs from that source — tap allow. Updates install over the top; your session data is preserved.
Are all counting systems really free?
Yes. All seven systems — Hi-Lo, KO, ReKO, Hi-Opt II, Omega II, Zen Count, and Wong Halves — are unlocked on install. There are no in-app purchases, no subscription, and no ads. The app is open source under Apache 2.0 so you can verify this for yourself.
The count or true count looks wrong — what should I check?
First, check the Decks Remaining slider — if it's set too low, the true count will be inflated. Next, verify you have the correct counting system selected (Hi-Lo, KO, etc.) since tag values differ between systems. For unbalanced systems like KO and ReKO, true count is not displayed — this is expected behaviour.
Why is my blackjack edge showing as negative?
A negative edge means the house currently has the advantage — this is normal when the true count is below +1. The baseline house edge on a 6-deck S17 game is roughly −0.46% with perfect basic strategy. As the true count rises above +1, the edge shifts in your favour. The app calculates this live based on your true count and the table rules you have configured.
Is the app compatible with my Android version?
Counting Edge requires Android 7.0 (API 24) or later. It targets Android 15 (API 36) and is optimised for modern devices. If you are experiencing issues on a supported version, please email us with your device model and Android version.
Can I use the app offline?
Yes. The entire app runs locally on your device — no internet connection is required to count cards, access strategy charts, or use any feature. The app makes no network calls.
Where can I report a bug or request a feature?
Open an issue at github.com/vectorlogic-dev/card-counter/issues, or use the email templates above. Pull requests are welcome too — see CONTRIBUTING.md for the dev setup.
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Still need help?

Email the Developer

If the quick paths above do not solve it, send a direct email. Include your Android version, what system you were using, and screenshots if you have them.

[email protected]
Typically replies within 1–2 business days