Comparison

Cardzilla vs Rylo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cardzilla

Display your messages in large, clear text for easy reading across distances. This app offers a no-scroll design that automatically resizes text as you type, saving all your cards automatically. It's ideal for silent communication or grabbing attention without sound.

Highlights
  • Large and clear text display
  • Automatic text resizing
  • No scroll design
  • Automatic card saving
  • Save favorite messages
  • Quick swipe navigation
  • Shake to save and erase
Features
Read full description

A fast & simple way to display your messages in large text. Communicate across distances. Pass messages silently. Grab attention when sound isn't an option! CARDZILLA Features • Large & clear text, easy to read. • No scroll design, text automatically resizes as you type! • All cards are automatically saved, never lose anything. • Save favorite messages for quick access. • Quick navigation with swipe interface. • Shake to quickly save-and-erase! CARDZILLA is built for speed and ease of use. Just start typing as soon a blank card appears. Text will resize as you type, no scrolling ever!

About

Rylo

This app provides real-time call captioning for phone conversations, making them accessible for deaf and hard-of-hearing individuals. It also offers live transcription for in-person meetings and supports multiple languages, with a focus on user privacy and community input.

Highlights
  • Real-time call captioning
  • Live in-person conversation transcription
  • Keep existing phone number
  • Save and review transcripts
  • Personal dictionary
  • Type responses
  • Voicemail transcription
Features
Read full description

Phone calls made accessible. Rylo provides real-time, AI-powered call captions on every phone call for anyone who is deaf or has hearing loss. Captioned calls are private and accurate. MAKE AND RECEIVE ANY CALL Rylo works like your native phone app, but with speech-to-text call captions. If you prefer to type your responses, you can choose a voice and use our text-to-speech feature. No interpreters. No relay services. No strangers listening in. LIVE CAPTIONS FOR REAL LIFE Our built-in feature, Rylo Live Transcribe, captions in-person conversations instantly: family dinners, doctor's appointments, airports, or anywhere else you don't want to miss a word. YOUR PRIVACY IS PROTECTED Captions are generated with end-to-end encryption. No human involvement. No one reading your calls but you. BUILT FOR THE DEAF COMMUNITY, BY THE DEAF COMMUNITY Rylo was built with direct input from the Deaf and hard of hearing communities. Every feature exists because someone in the community needed it. Accessibility matters. KEY FEATURES ■ Live caption calls with transcripts ■ Live captioning for in-person moments (Rylo Live Transcribe) ■ Personal dictionary for custom words and phrases ■ Quick keyboard responses as needed ■ Visual voicemail ■ Save transcripts privately on your device ■ Multilingual captioning: English, Spanish, French, Japanese, Hebrew, Italian ■ Built-in spam filter and call blocking ■ Profanity blocker ■ FCC certified "Rylo is the true definition of a game-changer. Their goal is to ensure effective and smooth communication." — Verified user "I was able to make a phone call myself. I set up my own appointment. I could clearly read every word the recipient was saying to me. I explained to her I was deaf and I was using closed captioning. It was amazing. Thank you Rylo for allowing me to be more independent." — Verified user Download Rylo. Make calls with confidence. For more: https://rylo.com/ Support: https://help.rylo.com/en/ FEDERAL LAW PROHIBITS ANYONE BUT REGISTERED USERS WITH HEARING LOSS FROM USING INTERNET PROTOCOL (IP) CAPTIONED TELEPHONES WITH THE CAPTIONS TURNED ON. There is a cost for each minute of captions generated, paid from a federally administered fund. There are also eligibility requirements and a cost, paid by a federally administered fund for each minute of IP Relay service. Emergency calling through Rylo works similar to, but not the same as, calling 911 directly through a landline. It is important to keep your Rylo Registered Location updated.

Screenshots

Cardzilla4 screens
Rylo4 screens

Verdict

The call

The clearest difference is monetization model: Cardzilla at free against Rylo's free with in-app purchases. Cardzilla also leads on review sentiment (91% vs 67%) and iOS requirement (13.0 vs 16.6). Rylo's advantage is update cadence (every 5 days vs every 4 weeks) and ratings volume (4.1K vs 76). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Cardzilla against 4.6 for Rylo. That said, the two scores are not equally well evidenced: Rylo has 4.1K ratings behind it against 76, so its average is the more settled of the two. Written reviews are what separate them: 91% of Cardzilla's written reviews are positive against 67% of Rylo's.

UpkeepUpdate frequency

Cardzilla ships an update every 4 weeks, Rylo every 5 days. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

Scorecard5 real differences · 5 level
Cardzilla versus Rylo: the parameters behind the verdict, then further details
ParameterCardzillaRylo
PriceFreeFree
Rating4.6 (76 ratings)4.6 (4.1K ratings)
Positive reviews91.1% of reviews — better67.3% of reviews
Number of ratings764.1K — better
Update frequencyEvery 4 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.0 — better16.6
Further details — not scored
Size3 MB106 MB
Age rating4+12+
DeveloperTim KetteringNagish Inc.

Customer experience

Cardzilla

All ratings76 ratings
Positive88.2%
Neutral5.3%
Negative6.6%
Written reviews56 reviews
Positive91.1%
Neutral5.4%
Negative3.6%

Rylo

All ratings4,073 ratings
Positive89.9%
Neutral2.7%
Negative7.5%
Written reviews379 reviews
Positive67.3%
Neutral5.3%
Negative27.4%

User reviews

Cardzilla

From 76 App Store ratings

What we love

  • 👍 Simple and intuitive interface
  • 🚀 Fast and efficient communication
  • 💡 Invaluable for users with speech/hearing impairments
  • 👍 Large, readable text display
  • 👍 Automatic saving of history

Room to improve

  • 🐛 Speech-to-text can be slow
  • 🐛 Microphone turns off too quickly
  • 🐛 Lack of language translation
  • 🐛 No clear way to contact developer
  • 🐛 Shake-to-erase can be accidentally triggered

Rylo

From 4.1K App Store ratings

What we love

  • 🚀 Accurate real-time transcription
  • 👍 Helpful for hearing-impaired users
  • 🚀 Seamless phone call experience
  • 👍 Excellent customer support
  • 💡 Innovative solution for accessibility

Room to improve

  • 🐛 Inconsistent call quality and connectivity issues
  • 🐛 Captions not always accurate
  • 🐛 Difficulty with registration and account setup
  • 🐛 Lack of features like call blocking and voicemail management

Bugs and requests

Cardzilla

Reported bugs

3 issues
  • Crashes on two-finger swipe up (iPad Air 2, iOS 11.2)
  • App no longer has mic icon (reported in 2019)
  • Notes lost when switching apps (reported in 2020, contradicted by other reviews)

Requested features

15 requests
  • On-screen keyboard visibility toggle
  • Adaptive text size options (fixed or auto-overflow)
  • Language translator
  • Setting for microphone to stay on
  • Option to disable shake-to-erase
Show 10 more
  • Dark mode option
  • Ability to set notes to 'scroll'
  • Option to contact developer
  • Add time/date stamps to saved notes
  • More color options for background/text
  • Support for Apple Watch
  • Offline speech-to-text functionality
  • Yellow background option for DeafBlind users
  • Option to make text size smaller
  • Improve text size scaling for longer inputs

Rylo

Reported bugs

3 issues
  • Registration process repeatedly fails
  • Incoming calls not detected by the app
  • Transcription stops working mid-call

Requested features

4 requests
  • Option to save call transcripts
  • Improved noise cancellation and microphone sensitivity
  • Integration with hearing aids and Bluetooth devices
  • Expanded language support

In-app purchases

None

Cardzilla

No in-app purchases

None

Rylo

No in-app purchases

Questions

Is Cardzilla free?
Cardzilla is free to download, with no in-app purchases.
Is Rylo free?
Rylo is free to download, with no in-app purchases.
Which has better reviews, Cardzilla or Rylo?
Cardzilla and Rylo are both rated 4.6 out of 5 on the App Store, from 76 and 4.1K ratings respectively.
Do Cardzilla or Rylo have ads?
Neither Cardzilla nor Rylo shows ads.
Which is updated more often, Cardzilla or Rylo?
Cardzilla ships an update every 4 weeks, and Rylo every 5 days. Most recently, Cardzilla was updated on October 15, 2026 and Rylo on October 17, 2026.

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