# FlashWords AAC vs Isaac AAC

The clearest difference is update cadence: Isaac AAC at weekly against FlashWords AAC's every 15 months. Isaac AAC also leads on device support (3 vs 1). FlashWords AAC's advantage is iOS requirement (12.0 vs 14.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. FlashWords AAC sells 1 one-off in-app purchase and Isaac AAC sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

FlashWords AAC ships an update every 15 months, Isaac AAC weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | FlashWords AAC | Isaac AAC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isaac-aac/id6746368688/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Weekly** |
| Monetization | — | Subscription |
| Size | 369 MB | 148 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [IntegraTools GmbH](https://appshunter.io/developer/618103816) | [Adrian Golian](https://appshunter.io/developer/1816458968) |

## What reviewers say

### FlashWords AAC

[App page](https://appshunter.io/ios/app/flashwords-aac/id1019094526)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Learn new words | $44.99 | one-time |


### Isaac AAC

[App page](https://appshunter.io/ios/app/isaac-aac/id6746368688)

This communication app uses voice synthesis, visual symbols, and AI-powered predictive text to help individuals with communication challenges express themselves. It aims to enhance independence and quality of life for users of all ages.

**Highlights:** Advanced voice synthesis, Intuitive visual symbols, AI-powered predictive text, Customizable communication platform, Supports independence and quality of life

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription ISAAC | $7.99 | per month |
| Isaac | $4.99 | one-time |


## Frequently asked questions

### Is FlashWords AAC free?

FlashWords AAC is free to download, with in-app purchases available.

### Is Isaac AAC free?

Isaac AAC is free to download, with in-app purchases available.

### Do FlashWords AAC or Isaac AAC have ads?

Neither FlashWords AAC nor Isaac AAC shows ads.

### Which is updated more often, FlashWords AAC or Isaac AAC?

FlashWords AAC ships an update every 15 months, and Isaac AAC weekly. Most recently, FlashWords AAC was updated on October 26, 2026 and Isaac AAC on October 24, 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.*