Comparison

T vs CaptionLens

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

Head to head
About

T

This app enables individuals who are Deaf, Hard of Hearing, DeafBlind, or have a Speech Disability to make and receive relay calls using text over the internet. It connects users with a qualified relay operator and offers features like an integrated contact list and call history.

Highlights
  • Text-based relay calls
  • Integrated contact list
  • Call history
  • Access to live customer care
  • Available on wireless networks
Features
Read full description

IP Relay, provided by T-Mobile for iOS devices, is a no cost internet-based telecommunications Mobile app available for people who are Deaf, Hard of Hearing, DeafBlind, or who have a Speech Disability who can make and receive relay calls and communicate using text on iOS 9 or higher, including iPad devices. IP Relay app is also available on wireless networks. Connect with a qualified relay operator via IP Relay. Features include integrated contact list, call history, and access to live customer care. Available only in USA and US territories. International calls will either be blocked or terminated. Registration is required to use this app. If no data plan service selected, casual data charges may apply. Learn more at t-mobile.com/IPRelay. Although IP Relay can be used for emergency calling, such emergency calling may not function the same as traditional 911/E911 services. By using the IP Relay app for emergency calling you agree that T-Mobile is not responsible for any damages resulting from errors, defects, malfunctions, interruptions, or failures in accessing or attempting to access emergency services through IP Relay whether caused by the negligence of T-Mobile or otherwise.

About

CaptionLens

This communication app offers instant messaging and internet calls with real-time transcription for voice and speech. It allows users to send text, voice messages, pictures, and make audio/video calls, converting spoken words into text and vice versa.

Highlights
  • Instant messaging with text and voice
  • Audio and video calls with transcription
  • Voice messages transcribed to text
  • Speech converted to text during calls
  • Text synthesized into speech during calls
  • Picture and text posting
Features
Read full description

Tranzi Caption is an instant messaging and Internet phone application specially designed for the hearing impaired. It aims to help the hearing impaired communicate with the world more easily. You can enjoy the following features: 1. Instant messaging: You can send voice messages, make audio and video calls, and post pictures and texts. The difference from other instant messaging applications (such as Whatsapp) is that voice messages and voice posts in this app will be transcribed as Text and speech in audio and video calls will also be converted into text. You can also enter text during the call, and the text will be synthesized into speech. 【Automatic renewal subscription instructions】 1. subscription service: one-month basic package automatically renews (one month) 2. subscription price: $19.99/mounth 3. automatic renewal: Accounts that purchase continuous monthly packages will be automatically deducted from the iunes account 24 hours before each month's expiration and the membership validity period will be extended by one month. 4. close subscribe: To cancel your subscription, Please manually open the "Settings" of ios Enter "iTunes Store and App Store"-->Click "Apple ID",Select "View Apple ID", enter the "Account Settings" page, and click "Subscriptions",Then choose "mounth package" to cancel your subscription. 5. Terms of Use: https://h.tranzicaption.com/user.html 6. Privacy Policy: https://h.tranzicaption.com/privacy.html

Screenshots

T4 screens
CaptionLens4 screens

Verdict

The call

The clearest difference is rating: CaptionLens at 5.0 against T's 3.1. T's advantage is in-app purchases (none vs 1) and ratings volume (87 vs 1). On price, update cadence, ads and device support 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. CaptionLens sells 1 in-app purchase, starting at $19.99 per month. T asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CaptionLens holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: T has 87 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 21, 2026 and September 11, 2026 respectively.

Scorecard4 real differences · 6 level
T versus CaptionLens: the parameters behind the verdict, then further details
ParameterTCaptionLens
PriceFreeFree
Rating3.1 (87 ratings)5.0 (1 ratings) — better
Positive reviews16.4% of reviews—
Number of ratings87 — better1
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS16.616.1 — better
Further details — not scored
Size15 MB298 MB
Age rating4+17+
DeveloperT-MobileCaptionLens Inc.

Customer experience

T

All ratings81 ratings
Positive45.7%
Neutral11.1%
Negative43.2%
Written reviews55 reviews
Positive16.4%
Neutral12.7%
Negative70.9%

CaptionLens

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

T

Reported bugs

50 issues
  • App still has LOT of bugs
  • Calls get dropped
  • Line is busy error
  • Hackers fake number calls
  • App hasn't been updated
Show 45 more
  • Doesn't work at all now
  • Cut out during call
  • Tried to recall but didn't work
  • Phone number in use error
  • Call connects then drops
  • CAs typing too many 'xxxx'
  • Transcribes caller's words to email
  • Password is wrong (works elsewhere)
  • Cannot verify identity
  • New version confusing
  • Cannot use microphone on keyboard to dictate
  • Cannot register, couldn't verify details
  • App does not connect to relay
  • Microphone doesn't work for voice to text
  • App doesn't work
  • Doesn't seem to work when trying to answer call
  • Does not list incoming call
  • Opening from notification screen, number not listed
  • Buggy, doesn't cooperate with system accessibility settings
  • Scrolling is buggy
  • Incoming text bounces below window
  • Incoming call window doesn't expand
  • Incoming calls don't always answer
  • System often cuts off users
  • Performance gets worse
  • Takes several minutes for messages to get through
  • Never able to complete important calls
  • Whenever I get a call, accept call does nothing
  • No vibration or sound notification for incoming calls
  • App requires upgrade but upgrade doesn't fix error
  • Unable to type anything to answer call
  • Can't see who called
  • Cannot answer calls
  • Number flashes briefly
  • Cannot forward number
  • Forwarding isn't supposed to work
  • App crashes when opening
  • Keyboard covers text box
  • Login doesn't work
  • Login not valid
  • Username creation fails
  • Nobody can hear me
  • Login/password doesn't work on app
  • Verification review takes too long
  • Favorites screen doesn't work

Requested features

10 requests
  • Ability to report spam callers
  • Send words automatically as I type
  • Add ability to block numbers
  • Option to subscribe to spam call blocking service
  • Make browser and app interfaces more similar
Show 5 more
  • Sound alerts for incoming calls
  • Way to read messages left by caller
  • Voicemail for missed calls
  • Copy and paste phone numbers into dial screen
  • Alphabetized phone book

CaptionLens

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

T

No in-app purchases

1 purchases

CaptionLens

Subscriptions1
  • mounth package$19.991 Month

Questions

Is T free?
T is free to download, with no in-app purchases.
Is CaptionLens free?
CaptionLens is free to download, with in-app purchases available.
Which has better reviews, T or CaptionLens?
CaptionLens is rated higher. T averages 3.1 out of 5 from 87 ratings, while CaptionLens averages 5.0 from 1 ratings.
Do T or CaptionLens have ads?
Neither T nor CaptionLens shows ads.
Which is updated more often, T or CaptionLens?
T ships an update every 3 months, and CaptionLens every 3 months. Most recently, T was updated on September 21, 2026 and CaptionLens on September 11, 2026.

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