78 reviews
Content rating
Everyone
10K+
Downloads
Content rating
Everyone
Learn more
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About this app

Cardzilla turns your phone into a card you can hold up.

Readable across a room, through a window, or in a noisy bar. Nothing to
set up, nothing to zoom.

MADE FOR
• Deaf and hard-of-hearing conversations
• People who don't use their voice, or can't right now
• Loud places where nobody can hear you
• Quiet places where you shouldn't speak
• Language barriers, where showing beats saying

HOW IT WORKS
• Type — the text resizes itself as you go
• Swipe to clear and start the next message
• Your note saves itself as you type, so it's still there when you come back
• Every message you clear is kept in History
• Star the notes you use often as favorites
• Shake to erase, if you want it

ALSO
• Light and dark mode support
• Available in 20 languages, matching your phone
Type a message and it fills your screen in the biggest text that fits.
Updated on
Oct 2, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

75 reviews
Tailina Contreras
August 14, 2026
I truly appreciate this application as it facilitates communication with individuals who do not use ASL. However, I have noticed that the copy-paste function within the app is currently not operational. I would be grateful if this feature could be enabled. Update August 14, 2026. To the app developers, thank you so much for adding copy/paste functionality!
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Randall Noriega
August 14, 2026
Hi Tailina. Thank you for your feedback. A new update has been pushed to address the copy & paste functionality. Please update your app to the latest version at your earliest convenience.
Kerry Burton
August 21, 2026
it seems like it works when it wants to or stops it wants to. it'll work for 3 seconds 5 seconds and then stop like it's doing right now even in the middle of a word when it's working it's all right but when it's not it sucks
Did you find this helpful?
Randall Noriega
September 2, 2026
Hi Kerry. A new update was released last week that might fix your issue. Could you check if it helps? If not, please email nulltone.dev@gmail.com with details. Also, does 'stop' mean the app crashes or stops accepting typing input? Please reach out via email. Thanks for reporting it!
Alicia Taylor
August 11, 2026
new update did away with any method to close the app (android)within the app. the back arrow doesnt even close it now......it only pulls out the settings menu. the only way now is to use the close all menu, which means you have to go to the apps page again to access and wait for it to reload.
Did you find this helpful?
Randall Noriega
August 20, 2026
Hi Alicia, thanks for the feedback! We’ve released a new update that fixes this back-button issue so it properly closes/minimizes the app as expected. Please update to the latest version and let us know if everything works smoothly now!

What’s new

• Fixed a blank white screen that could appear after opening a note from History.
• Fixed the wrong note opening when you tap the card right after choosing one.
• Notes keep their place in History — opening or editing one no longer moves it.
• Your note now appears in History as you write it.
• Fixed the old text flashing back for a moment after you clear the card.
Content rating
Everyone
Learn more

App support

About the developer
Mario Randy Noriega
nulltone.dev@gmail.com
United States