Comparison

CaptionCall vs IU Interpreter App

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

Head to head
About

CaptionCall

This app provides real-time, live captions for phone calls, enabling deaf and hard-of-hearing individuals to communicate effectively. It offers a free, secure, and private way to make and receive calls with automatic transcription, accessible anywhere with internet service.

Highlights
  • Live call captioning
  • Real-time transcription
  • Customizable display
  • Secure and private
  • Use WiFi or mobile data
  • Voicemail alerts
Features
Read full description

CaptionCall Mobile empowers deaf and hard-of-hearing individuals to make and receive phone calls with instant live captions. CaptionCall Mobile offers captioned phone calls in real-time at no cost to qualified deaf and hard-of-hearing users in an easy-to-use mobile app that integrates seamlessly into daily life and work. Why CaptionCall? No more landlines. CaptionCall Mobile goes where you go, allowing you to make and receive captioned calls from your mobile device anywhere with WiFi or mobile data service. Fast, accurate, and easy, CaptionCall automatically transcribes both sides of your conversation in a customizable easy-to-read format, using advanced voice to text for deaf and hard-of-hearing that is 100% private and secure. Accurate call captions appear in real-time for free-flowing, natural conversation. No cost, ever. As an FCC-approved captioned call service, CaptionCall provides 100% no-cost call captioning to those with qualified hearing loss, thanks to a federally-administered fund. GETTING STARTED WITH CAPTIONCALL MOBILE IS EASY: 1. Install the CaptionCall Mobile app 2. Create an account. You must provide accurate account information to meet federal requirements and enable your service. 3. Receive your new CaptionCall Mobile phone number for making and receiving captioned calls. Or you can continue using your existing phone number and automatically forward them to CaptionCall Mobile on your mobile device or tablet for captioning. 4. Tap “Allow” when asked to grant permissions to CaptionCall Mobile. You'll have quick access to your saved contacts, captioned voicemail and voicemail alerts, and can dial and receive calls from any phone number, just like your regular phone. 5. Use CaptionCall Mobile to start making calls with instant live captions. CaptionCall Mobile is exclusively for people with hearing loss who need captions to use the phone effectively in the United States only. CaptionCall and CaptionCall Mobile are available in the United States only. FEDERAL LAW PROHIBITS ANYONE BUT REGISTERED USERS WITH HEARING LOSS FROM USING INTERNET PROTOCOL (IP) CAPTIONED TELEPHONES WITH THE CAPTIONS TURNED ON. IP captioned telephone service may use a live operator. The operator generates captions of what the other party to the call says. These captions are then sent to your phone. There is a cost for each minute of captions generated, paid from a federally administered fund. No costs are passed along to individuals who qualify for the service. The CaptionCall phone and app remain the property of Sorenson in order to provide ongoing support, service, and upgrades. Patent information: www.Sorenson.com/Legal. Please report any bugs and feedback to Happy calling! Thanks, The CaptionCall Mobile Team

About

IU Interpreter App

Book and receive language interpretation services, either in-person or virtually. Access over 10,000 contracted linguists covering 200+ languages, including ASL. Manage all appointments and payments directly within the app.

Highlights
  • Book in-person or virtual interpretation
  • Access 10,000+ linguists
  • Supports 200+ languages including ASL
  • Automated scheduling system
  • Manage appointments and payments
  • Attach verification forms
Features
Read full description

Interpreters Unlimited (IU) has launched a smart phone app exclusively for booking language services. The IU app is used to book and deliver interpreter services anywhere they are needed, in person or virtually via video or phone. With the IU app, customers have access to the entire pool of IU’s contracted linguists, over 10,000 of them, covering 200+ languages including American Sign Language (ASL). The app is custom designed and developed by IU, as one of the largest Language Service Providers in the United States, for their clients and contracted interpreters specifically. It uses IU’s proprietary auto scheduling system on the back end which can book a linguist within minutes. All appointment management is handled completely inside of the app, customers simply input the details of their event and the app goes to work. Some benefits of the app include: -Get paid quicker by entering your end times on your mobile device right away. -Ability to photograph any verification forms and attach it directly to the event. -Accept jobs immediately, including accepting multiple jobs at once. -Ability to look at past jobs, present and future events. -Ability to call the IU office and have the IU team look at requests live in the system. -A secured environment and secure system. The IU app is an ideal tool connecting interpreters with businesses and professionals who need languages services for everything from law firms and courts to education, healthcare, insurance, and everything in between. Users only pay for the interpreting services that they schedule through the app. With no sign-up fee, no usage fee, and no monthly charge to use, the IU app is the ultimate tool for professionals and their businesses when language services are needed.

Screenshots

CaptionCall4 screens
IU Interpreter App4 screens

Verdict

The call

The clearest difference is ratings volume: CaptionCall at 3.6K against IU Interpreter App's 1. IU Interpreter App's advantage is rating (5.0 vs 4.8). On price, update cadence, 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

IU Interpreter App holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: CaptionCall has 3.6K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

CaptionCall ships an update fortnightly, IU Interpreter App every 8 days. The most recent releases landed on September 24, 2026 and July 5, 2026 respectively.

Scorecard2 real differences · 8 level
CaptionCall versus IU Interpreter App: the parameters behind the verdict, then further details
ParameterCaptionCallIU Interpreter App
PriceFreeFree
Rating4.8 (3.6K ratings)5.0 (1 ratings) — better
Positive reviews74.2% of reviews—
Number of ratings3.6K — better1
Update frequencyFortnightlyEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS16.015.1 — better
Further details — not scored
Size110 MB29 MB
Age rating4+4+
DeveloperMachineGeniusInterpreters Unlimited, Inc.

Bugs and requests

CaptionCall

Reported bugs

3 issues
  • Login/connection issues
  • Captions not showing up during calls
  • Keypad blocking captions

Requested features

4 requests
  • Automatic language detection and switching
  • Text-to-speech functionality for mute users
  • Customizable tone/volume settings
  • Improved integration with phone dialer

IU Interpreter App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

CaptionCall

No in-app purchases

None

IU Interpreter App

No in-app purchases

Questions

Is CaptionCall free?
CaptionCall is free to download, with no in-app purchases.
Is IU Interpreter App free?
IU Interpreter App is free to download, with no in-app purchases.
Which has better reviews, CaptionCall or IU Interpreter App?
IU Interpreter App is rated higher. CaptionCall averages 4.8 out of 5 from 3.6K ratings, while IU Interpreter App averages 5.0 from 1 ratings.
Do CaptionCall or IU Interpreter App have ads?
Neither CaptionCall nor IU Interpreter App shows ads.
Which is updated more often, CaptionCall or IU Interpreter App?
CaptionCall ships an update fortnightly, and IU Interpreter App every 8 days. Most recently, CaptionCall was updated on September 24, 2026 and IU Interpreter App on July 5, 2026.

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