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Last updated on: 2026-09-02
Android Apps > Communication > Cardzilla
Cardzilla icon

Cardzilla

3.3
Randall Noriega
4.21
74 reviews
10,000+
Downloads
Free

Type a message and it fills your screen in the biggest text that fits.

Cardzilla Screenshot 1 of 6
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Download from Google Play

About Cardzilla

Cardzilla is a communication app developed by Randall Noriega.

Download Statistics

Cardzilla has been downloaded 16 thousand times. In the last 30 days, the app was downloaded 380 times.

User Ratings

Cardzilla is rated 4.21 out of 5 stars. The rating is based on 74 ratings.

App Information

Cardzilla is FREE to download. The APK download size is 1.42 MB. The latest version available is 3.3. The last update was on August 17, 2026.

Technical Requirements

Cardzilla requires Android 4.4+ or higher. The app has a content rating of Everyone. The app has been available on Google Play January 2020.

Description
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

Recent changes:
- The back button and back gesture now work normally and follow the convention: they close the sidebar, then return to the notepad, then exit the app.
- The app now follows your device's rotation lock.
Show more Show less

More data about Cardzilla

Price Free to download
Total downloads 16 thousand
Recent downloads 380
Rating 4.21 based on 74 ratings
Ranking Not ranked
Version 3.3
APK size 1.42 MB
Number of libraries 20
Designed for Android 4.4+
Suitable for Everyone
Ads NO ads

App Performance Report

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Cardzilla compared with similar apps

Common keywords of similar apps

Back Cardzilla Places Clear Type Message Text Phone App

Keywords missing from this app

Voice Messages Big Speech Display Notes Large Screen Banner Speak Bignote Save Tap Share Turn Wisper Mode Free Note Features Instantly Scrolling Easy Recent Write Fast Ai Keyboard Dictation Snotes Conversation Typing Read Quick People Device Make Send Google Talk Themes Colors Word Long Languages

Google Play Rating history and histogram

Rating history
Subscribe to see the full rating timeline
48
10
5
3
6

Downloads over time

Downloads over time
Subscribe to see download velocity and history

Cardzilla has been downloaded 16 thousand times. Over the past 30 days, it averaged 13 downloads per day.

Changelog of Cardzilla

Show changelog

Developer information for Randall Noriega

Randall Noriega

nulltone.dev+cardzilla@gmail.com

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Address:

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Comments on Cardzilla for Android

★★★★★ Jonathan Huck · Feb 14, 2026
Great to use with my friend who is HoH - a cool option is to be able to flip the screen with a button. So the other person can see you typing in real time, and it would be right side up for them.
★★★★★ KYABUpaks Studios · May 14, 2020
Useful for me as a deaf person, to communicate with hearing people who can't sign. Thanks!
★★★★★ Joyce B · Jul 5, 2026
Works great for communicating with my deaf friend, I used to use Samsung notes, but I like that the text on this is bigger, and it's nice to be able to delete all the text at once by just swiping left on the screen (or hitting the trash can).
★☆☆☆☆ Ridwan Tanvir · Mar 18, 2024
This app has no saved note clips feature or history feature. The Cardzilla app on iPhone has the useful features like saved note clips and history notes. You must add the features to this app (Android version) now. I need these so much for saving my time.
★★☆☆☆ Kate · Apr 3, 2025
Currently using this to communicate with a coworker, but I need the shake to erase and other functions to exist for android, not just iPhone 🙃

Google Play Rankings for Cardzilla

This app is not ranked

Technologies used by Cardzilla

2 permissions · 20 libraries
Subscribe to see full permission and library details
Messages by OzarksMade icon Messages by OzarksMade
Big Text Display icon Big Text Display
Large Text: Signboard icon Large Text: Signboard
Speak For Me - Text to Speech icon Speak For Me - Text to Speech
Shout Screen - Big Text Screen icon Shout Screen - Big Text Screen
Big Word icon Big Word
Write & Display Big Text icon Write & Display Big Text
BigNote - Large Text Banner icon BigNote - Large Text Banner

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