Flash Deck

Flash Deck is a science & education application developed by rh-id, packaged as a single Android APK of version 1.2 weighing in at 7.74 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

1. Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
2. File size is a light 7.74 MB, so it installs quickly even on modest connections.
3. This build is signed by "rh-id" — always verify the developer name matches what's listed on the app's official store page before installing an update.
4. After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
5. We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

• Easily add decks and flash cards


• Reversible cards — swap question and answer during tests


• Copy and move cards between decks


• Save & Add Another button for quick consecutive card creation


• Record voices and attach images for your cards

• Test mode with shuffle and progress tracking


• Test state persistence — resume your test after app restart


• Flash bot to smartly suggest cards to test you based on your behavior

• Notification timer to periodically quiz you


• Notification time window — set start and end times for reminders


• Voice playback directly from notifications


• Create shortcut to show random card from deck for casual study (Android 8+)

• Easily export & share your decks to your friends


• Import and export decks in Anki .apkg format (supports Basic cards with images and audio)

• Generate flash card decks from any topic using Google Gemini AI


• Transform existing decks with AI — translate, expand, create harder questions, and more


• AI model selection — choose from available Gemini models

• Support dark mode and light mode

Is Flash Deck free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Flash Deck require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Flash Deck safe to install?
We link to the exact APK published by rh-id. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Flash Deck?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

1. Tap the Download APK button above and save the file to your device.
2. Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
3. Open the downloaded m.co.rh.id.a_flash_deck.apk file from your Downloads folder.
4. Tap Install and wait for Android to finish.
5. Open «Flash Deck» by rh-id and grant only the permissions it actually needs.
6. Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.