Comparison

Avaz AAC vs Math Skills Builder Lite

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

Head to head
About

Avaz AAC

This app empowers individuals with speech difficulties to communicate freely. It aids language development by presenting core words and allows users to form sentences and express themselves with over 40,000 pictures and high-quality voices. Customizable themes and effortless backup options enhance the user experience.

Highlights
  • Symbol-based communication
  • Text-to-speech functionality
  • Customizable themes
  • Automatic vocabulary backup
  • Research-based language development
  • High-quality voices
Features
Read full description

Avaz AAC is an assistive communication app that empowers children & adults with Autism, Cerebral Palsy, Down Syndrome, Aphasia, Apraxia, and individuals with speech difficulties to communicate freely and build meaningful relationships. “My daughter has nearly mastered navigation, so much so that one day she brought it to me to show me she wanted Taco Bell for lunch. This made me cry. My child had a voice for the first time. Thank you for being the one to give my daughter that "voice". - Amy Kinderman Designed to aid language development, by presenting core words, which make up 80% of everyday speech, in a research-based order. This enables users to progress from using 1-2 word phrases to forming complete sentences. Avaz, a fully AAC text-to-speech app with over 40,000 pictures(Symbolstix) and a range of high-quality voices, enables users to form sentences and express themselves with ease quickly. Avaz is a customizable AAC app that empowers users to express themselves authentically and build meaningful connections! Effortless Backup and Themes Enjoy the convenience of auto backup for worry-free vocabulary progress. Simply choose how often you want your vocabulary progress backed up with our auto-backup interval selection option. Never lose your progress again! We understand our users have different preferences for cloud storage, so we made it easy to back up your vocabulary to your preferred platform, including popular ones like Google Drive. Explore our visual themes - Classic Light, Classic Dark (with high contrast), and Outer Space (a dark mode). Our default dark mode has been beneficial for adult users and those using Avaz with eye-tracking devices. Try Avaz AAC's free 14-day trial without adding credit card details! Make in-app purchases and choose from our affordable monthly, yearly, and lifetime subscription plans to keep benefiting from the amazing features. Now available in English US, English UK, Français, Dansk, Svenska, Magyar, Føroyskt is fully compatible with iPads and iPhones. If you’re new to AAC, don’t worry! Visit www.avazapp.com for beginner-friendly articles to help you get started. Connect with our passionate Avaz community on Facebook and other social media platforms. We are always happy to hear from you. For any assistance, please write to us at support@avazapp.com Note: Avaz AAC - Lifetime Edition is available for a one-time purchase and offers a 50% discount with VPP for 20+ licenses. Terms of Use - https://www.avazapp.com/terms-of-use/ Privacy Policy - https://www.avazapp.com/privacy-policy/

About

Math Skills Builder Lite

This app helps students apply early numeracy skills to solve real-world math problems. It uses math stories and concrete strategies to teach when to add or subtract. Research indicates the program is highly effective for developing problem-solving abilities.

Highlights
  • Real-world math problem scenarios
  • Early numeracy skill application
  • Concrete addition/subtraction strategies
  • Multiple learning modes
  • Research-backed effectiveness
Read full description

(Note: This free version limits program to only the first unit and no assessment. Available through in app purchase.) Teaches students how to apply their early numeracy skills to solve problems. Using math stories with real-world scenarios, students learn concrete strategies (using multiple modes of learning) for knowing when to add or subtract to solve the math story. Research found the program extremely effective in teaching students to be successful problem solvers.

Screenshots

Avaz AAC4 screens

Verdict

The call

The clearest difference is rating: Math Skills Builder Lite at 5.0 against Avaz AAC's 4.1. Avaz AAC's advantage is ratings volume (316 vs 1) and update cadence (every 4 months vs every 19 months). On price, ads, in-app purchases and monetization model 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. Avaz AAC sells 4 in-app purchases, starting at $9.99 per month and Math Skills Builder Lite sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Math Skills Builder Lite holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Avaz AAC has 316 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Avaz AAC ships an update every 4 months, Math Skills Builder Lite every 19 months. The most recent releases landed on October 26, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Avaz AAC versus Math Skills Builder Lite: the parameters behind the verdict, then further details
ParameterAvaz AACMath Skills Builder Lite
PriceFreeFree
Rating4.1 (316 ratings)5.0 (1 ratings) — better
Positive reviews60.2% of reviews—
Number of ratings316 — better1
Update frequencyEvery 4 months — betterEvery 19 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS14.013.0 — better
Further details — not scored
Size169 MB191 MB
Age rating4+4+
DeveloperAvaz, Inc.Attainment Company

Customer experience

Avaz AAC

All ratings316 ratings
Positive77.2%
Neutral7.9%
Negative14.9%
Written reviews93 reviews
Positive60.2%
Neutral12.9%
Negative26.9%

Math Skills Builder Lite

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

Bugs and requests

Avaz AAC

Reported bugs

11 issues
  • App crashes when typing or entering letters
  • Screen freezes when searching for pictures
  • Voice functionality stops working randomly
  • Audio not playing despite correct volume settings
  • App loses voice after several uses
Show 6 more
  • Backup import puts boards into single folder instead of original structure
  • Screen rotation issues with keyboard
  • App takes long time to load on tablets
  • Sentence word order incorrect with screen reader (words with icons read last)
  • Internet connection error during subscription
  • Slow customer support response times

Requested features

10 requests
  • Free or significantly reduced pricing for disabled users
  • Longer free trial period (20+ days suggested)
  • Ability to save and reuse phrases
  • Online two-way communication capability
  • Video and user-created image support
Show 5 more
  • Vertical orientation option for small hands
  • Extended gender identity options beyond binary
  • Automatic phrase copying without premium
  • Lifetime membership after extended subscription period
  • Picture upload and backup/restore functionality

Math Skills Builder Lite

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Avaz AAC

Subscriptions2
  • Avaz Auto Renewing Subscription$9.991 Month
  • Avaz Yearly Subscription$99.991 Year
One-time2
  • Lifetime Subscription2 variants$199.99
  • Lifetime Subscription$299.99
1 purchases

Math Skills Builder Lite

One-time1
  • Full Version$59.99

Questions

Is Avaz AAC free?
Avaz AAC is free to download, with in-app purchases available.
Is Math Skills Builder Lite free?
Math Skills Builder Lite is free to download, with in-app purchases available.
Which has better reviews, Avaz AAC or Math Skills Builder Lite?
Math Skills Builder Lite is rated higher. Avaz AAC averages 4.1 out of 5 from 316 ratings, while Math Skills Builder Lite averages 5.0 from 1 ratings.
Do Avaz AAC or Math Skills Builder Lite have ads?
Neither Avaz AAC nor Math Skills Builder Lite shows ads.
Which is updated more often, Avaz AAC or Math Skills Builder Lite?
Avaz AAC ships an update every 4 months, and Math Skills Builder Lite every 19 months. Most recently, Avaz AAC was updated on October 26, 2026 and Math Skills Builder Lite on October 5, 2026.

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