# Listy stromů vs Isaac AAC

The clearest difference is price: Isaac AAC at Free against Listy stromů's $3.99. Isaac AAC also leads on update cadence (weekly vs every 42 months). Listy stromů's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Isaac AAC is free to download; Listy stromů costs $3.99 up front. Isaac AAC sells 2 in-app purchases, starting at $7.99 per month. Listy stromů asks for nothing beyond the download.

Listy stromů ships an update every 42 months, Isaac AAC weekly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Listy stromů | Isaac AAC |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isaac-aac/id6746368688/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 42 months | **Weekly** |
| Monetization | — | Subscription |
| Size | 27 MB | 148 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Vitesnik](https://appshunter.io/developer/1594087648) | [Adrian Golian](https://appshunter.io/developer/1816458968) |

## What reviewers say

### Listy stromů

[App page](https://appshunter.io/ios/app/listy-stromu/id1616137625)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Listy stromů free?

Listy stromů costs $3.99, with no in-app purchases.

### Is Isaac AAC free?

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

### Do Listy stromů or Isaac AAC have ads?

Neither Listy stromů nor Isaac AAC shows ads.

### Which is updated more often, Listy stromů or Isaac AAC?

Listy stromů ships an update every 42 months, and Isaac AAC weekly. Most recently, Listy stromů was updated on November 3, 2026 and Isaac AAC on November 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.*