# Avaz AAC vs Math Skills Builder Lite

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.

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.

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.

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.

## The numbers

| Metric | Avaz AAC | Math Skills Builder Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (316 ratings)](https://appshunter.io/ios/app/avaz-aac/id909574843/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/math-skills-builder-lite/id1277897625/reviews)** |
| Number of ratings | **316** | 1 |
| Positive reviews | 60.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 169 MB | 191 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Avaz, Inc.](https://appshunter.io/developer/904985795) | [Attainment Company](https://appshunter.io/developer/403989333) |

## What reviewers say

### Avaz AAC

[App page](https://appshunter.io/ios/app/avaz-aac/id909574843)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Avaz Auto Renewing Subscription | $9.99 | per month |
| Avaz Yearly Subscription | $99.99 | per year |
| Lifetime Subscription | $199.99 | one-time |
| Lifetime Subscription | $299.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface and easy navigation
- 🎯 Highly customizable to individual needs
- 🗣️ Clear, natural-sounding voice options
- 💬 Effective communication tool for non-verbal users
- 🎨 Clear and intuitive icons

**What reviewers complain about**

- 💸 High subscription cost ($300 lifetime, $10+ monthly)
- ⏰ Short free trial period (14 days only)
- 🚫 Misleading free trial marketing
- 🔇 Voice feature disabled after trial ends
- 🐛 Frequent app crashes and freezing

**Reported bugs**

- 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

**Requested features**

- 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


### Math Skills Builder Lite

[App page](https://appshunter.io/ios/app/math-skills-builder-lite/id1277897625)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $59.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*