Comparison

Voice4u AAC vs Grace 4

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

Head to head
About

Voice4u AAC

This app provides a picture-based communication system for individuals with speech challenges, such as autism or stroke. It allows users to create custom symbols with their own photos and voices, and offers text-to-speech in over 30 languages. It's designed to be portable, customizable, and easy to use, bridging communication gaps.

Highlights
  • Picture-based communication
  • Customizable symbols with own photos/voice
  • Text-to-speech in 30+ languages
  • Over 180 pre-designed symbols
  • Switch accessible
  • Offline use
  • Data backup and sync
Features
Read full description

Voice4u is picture-based communication app for those who have speech speech challenges. There could be countless reasons of why individuals may be struggling with impeding communication; autism, stroke, language barrier, traumatic brain injury, and etc. It can be a frustrating process for both the struggling individual, and the ones around him/her. Unlikely from conventional AAC communication devices, Voice4u is portable, customizable, and easy-to-use communication tool. With Voice4u, you can easily bridge the communication gap and have a more better and accurate understanding of the individual’s wants and needs. It comes with numerous of vivid and memorable specially designed images that can help assist and improve language. In addition, you can create as many as icons you need using your own photos and voice. In case you can’t record voice, Voice4u can generate voices for you in 30+ languages. The app is developed through collaboration with professionals, such as, speech language pathologists, special education teachers, parents of special needs individuals, and researchers. Voice4u has been used in 100+ countries around the world since 2009. ----- FEATURES ------ - Over 180 symbols (icons), consisting of specially designed graphics and clear, easy-to-listen audios. - You can add your own symbols (icons) as many as 10,000 depending on the storage space of your device. - You can add a new symbol (icon) as fast as 5 seconds by taking advantage of machine learning algorithms. - Voice4u can generate voice in 30 different languages (instead of you record your own voice). - Switch Accessible: You can control Voice4u with Bluetooth Switch Interface from RJ Cooper & Associates. - You can wirelessly backup your data and synchronize your data between all devices you own. - Voice4u can be used off-line. Terms of Use: http://voice4uaac.com/terms Privacy Policy: http://voice4uaac.com/privacy ----- WITH VOICE4U YOU CAN ----- - Create a visual schedule - Create a visual social story - Be able to tell stories, explain an event or occasion - Make and share delicious visual recipes - Use for both adult and children

About

Grace 4

This app facilitates communication for individuals with speech disabilities using a picture exchange system. Users can select images to build sentences, share them with communication partners, and customize content with their own photos and labels. It supports vocal output and offers adjustable settings for various needs.

Highlights
  • Picture exchange communication
  • Customizable image library
  • Sentence strip creation
  • Optional vocal output
  • Fullscreen sentence view
  • Adjustable card sizes
Read full description

Grace App - winner of the 2010 Irish Web Awards and United Nations World Summit Award Mobile. * * * * Grace App is an evidence-based picture exchange app designed to encourage and reward independent communication through the use of images. While created with and for people with autism, it can be used by anyone with a speech disability or delay. Grace App is designed to be owned and updated by the user, with minimum support from care-givers. Grace App works by offering a selection of images in categorized folders where users can select a picture to add to the “sentence strip”. The user then shares the sentence with their communication partner who helps them to point to each card, reading the words aloud. The default setting is for no sound; however, there is an option in Settings to select “Tap Card to Speak” for users who prefer a vocal output. On handhelds such as iPod touch or iPhone, the device can be rotated to landscape to show a fullscreen sentence view for sharing and pointing. On iPad, simply tap the arrow to enlarge the sentence to fullscreen. There's also a choice of 3 card sizes for user preference and those with visual/mobility impairment. Category folders contain a selection of pre-loaded images. Users can add their own images using the camera or access any saved and stored images in their photo library, including images saved from the web. All images can be labeled with text, deleted, or rearranged to suit the individual user. You can add new Category folders, with a selection of your own photos. All Categories can be rearranged and renamed as required. Detailed instructions are available in the Guide to Grace App at http://www.graceapp.com. Users can also learn about therapeutic strategies for developing other communication goals in the Guide. These include accepting and expressing “No, Wait” and “Asking for Help” There is also a section on communicating pain. Grace App has been reviewed by senior speech and language therapists who say: “Grace App is easy and quick to use and set up, it's easy to rename photo labels. Grace App is my favourite AAC app". KM - Speech and Language Therapist. "I use Grace App with some of my clients who have difficulty communicating and need a system to augment their speech. One client, a school-aged child with Down Syndrome who has difficulty expressing himself using speech loves Grace App. Within a matter of minutes he was independently requesting his snack AND saying the word. In his case, the voice output was not activated, as he was more motivated to say the words and my goal is ultimately speech production. However, for some of my clients Vocal Output would be very beneficial. I also love the support you get from the developer – you don’t always get this with communication apps. Grace App is simple to use, easy to edit, and very effective as a communication device. The pictures are very easy to take on the spot, and now also very easy to label (every speech therapist’s dream). I also use it along with sign language – a true total communication approach! Grace App is a simple and genius app.” MM - Speech and Language Pathologist. Grace App is continually improved with the feedback and help of users world-wide. If you have any suggestions or need support, please contact us at http://www.graceapp.com. Please leave a review if you think Grace has been helpful to you or your family! * * * * Grace App Communication is a member of Moms with Apps, a collaborative group of family-friendly developers seeking to promote quality apps for kids and families. Recommended Ages: Suitable for all ages, parents and caregivers. Currently available in English, French, German, Spanish, Danish, Portuguese, Arabic and Italian. Discounts are available through Apple’s educational Volume Purchase Program. "Easy Lemon (60 second)" Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Screenshots

Voice4u AAC3 screens
Grace 44 screens

Verdict

The call

The clearest difference is price: Grace 4 at $39.99 against Voice4u AAC's $59.99. Grace 4 also leads on in-app purchases (none vs 2) and ratings volume (45 vs 12). Voice4u AAC's advantage is update cadence (every 2 months vs every 8 months) and review sentiment (71% vs 56%). On rating, 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

Voice4u AAC costs $59.99 and Grace 4 $39.99 up front. Voice4u AAC sells 2 in-app purchases, starting at $0.99 per month. Grace 4 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Voice4u AAC holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 12 and 45 respectively. Written reviews point the same way: 71% of Voice4u AAC's written reviews are positive against 56% of Grace 4's.

UpkeepUpdate frequency

Voice4u AAC ships an update every 2 months, Grace 4 every 8 months. Both last shipped on October 23, 2026.

Scorecard7 real differences · 3 level
Voice4u AAC versus Grace 4: the parameters behind the verdict, then further details
ParameterVoice4u AACGrace 4
Price$59.99$39.99 — better
Rating4.7 (12 ratings) — better4.5 (45 ratings)
Positive reviews70.8% of reviews — better55.6% of reviews
Number of ratings1245 — better
Update frequencyEvery 2 months — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size89 MB17 MB
Age rating4+4+
DeveloperSpectrum VisionsSteven Troughton-Smith

Customer experience

Voice4u AAC

All ratings12 ratings
Positive91.7%
Neutral8.3%
Negative0.0%
Written reviews24 reviews
Positive70.8%
Neutral12.5%
Negative16.7%

Grace 4

All ratings44 ratings
Positive88.6%
Neutral4.5%
Negative6.8%
Written reviews54 reviews
Positive55.6%
Neutral11.1%
Negative33.3%

Bugs and requests

Voice4u AAC

Not enough reviews yet to summarise bugs or requests.

Grace 4

Reported bugs

13 issues
  • App flashing on and off
  • App closes unexpectedly
  • Cannot see pictures when clicking icon headers
  • Imported pictures show on top of each other
  • Issues with adding own categories
Show 8 more
  • App not working well
  • App not updated
  • App flashing on and off on opening
  • Double tapping to remove from sequence not ideal
  • App screen flickers
  • Images not visible on category headers
  • App not functioning as expected
  • App not updated for iPad

Requested features

19 requests
  • Ability to record own voice
  • Add own categories
  • Remove existing categories
  • More cards/images
  • Add own cards to existing categories
Show 14 more
  • Add categories for verbs, adjectives, adverbs, emotions, times
  • More word sentence starters/makers
  • Ability to save chosen sequences
  • Category sorting
  • Expand categories (e.g., 'Things I need')
  • Support multiple users/students
  • Hide/show categories
  • Rearrange categories
  • Add custom PECS under pre-made categories
  • Sizing of items
  • Add sound/speech to visuals
  • Labeling for images
  • Recall of image strings
  • Print functionality

In-app purchases

2 purchases

Voice4u AAC

Subscriptions2
  • Voice4u Pro (Monthly Subscription)14 Days trial$0.991 Month
  • Voice4u Pro (Annual Subscription)14 Days trial$9.991 Year
None

Grace 4

No in-app purchases

Questions

Is Voice4u AAC free?
Voice4u AAC costs $59.99, and also offers in-app purchases.
Is Grace 4 free?
Grace 4 costs $39.99, with no in-app purchases.
Which has better reviews, Voice4u AAC or Grace 4?
Voice4u AAC is rated higher. Voice4u AAC averages 4.7 out of 5 from 12 ratings, while Grace 4 averages 4.5 from 45 ratings.
Do Voice4u AAC or Grace 4 have ads?
Neither Voice4u AAC nor Grace 4 shows ads.
Which is updated more often, Voice4u AAC or Grace 4?
Voice4u AAC ships an update every 2 months, and Grace 4 every 8 months. Most recently, Voice4u AAC was updated on October 23, 2026 and Grace 4 on October 23, 2026.

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