# Proloquo2Go AAC vs RadSounds Cause/Effect

The clearest difference is price: RadSounds Cause/Effect at $1.99 against Proloquo2Go AAC's $249.99. RadSounds Cause/Effect also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 18.0). Proloquo2Go AAC's advantage is ratings volume (12K vs 2) and update cadence (every 3 months vs every 11 months). On ads and monetization model there is nothing between them.

Proloquo2Go AAC costs $249.99 and RadSounds Cause/Effect $1.99 up front. Proloquo2Go AAC sells 1 one-off in-app purchase. RadSounds Cause/Effect asks for nothing beyond the download.

Proloquo2Go AAC holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Proloquo2Go AAC has 12K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 86% of Proloquo2Go AAC's written reviews are positive against 78% of RadSounds Cause/Effect's.

Proloquo2Go AAC ships an update every 3 months, RadSounds Cause/Effect every 11 months. The most recent releases landed on November 11, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Proloquo2Go AAC | RadSounds Cause/Effect |
| --- | --- | --- |
| Price | $249.99 | **$1.99** |
| Rating | **[4.8 (12K ratings)](https://appshunter.io/ios/app/proloquo2go-aac/id308368164/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/radsounds-causeeffect/id420977569/reviews) |
| Number of ratings | **12K** | 2 |
| Positive reviews | **85.9% of reviews** | 77.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 11 months |
| Monetization | Paid | Paid |
| Size | 956 MB | 121 MB |
| Requires iOS | 18.0 | **9.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [AssistiveWare](https://appshunter.io/developer/308368167) | [RJ Cooper & Associates, Inc.](https://appshunter.io/developer/412790299) |

## What reviewers say

### Proloquo2Go AAC

[App page](https://appshunter.io/ios/app/proloquo2go-aac/id308368164)

This app is a powerful communication tool for individuals who have difficulty speaking. It allows users to tap symbols or type words to express themselves, offering natural-sounding voices and extensive customization to support language development.

**Highlights:** Symbol-based communication, Text-to-speech with natural voices, Customizable vocabulary and symbols, Core word vocabulary with progressive language, Grid and QWERTY keyboard options, Bilingual language support, Accessibility features for motor and visual impairments

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gateway vocabulary | $149.99 | one-time |

**What reviewers like**

- 🚀 Great app!
- 👍 Helps communicate
- 👍 Customizable
- 👍 Easy to use
- 👍 Versatile

**What reviewers complain about**

- 🐛 Crashes/bugs
- 🐛 Sensitivity issues
- 🔊 Volume too low
- 🔒 No password protection
- 📱 Compatibility issues with older devices

**Reported bugs**

- Buttons/icons disappearing
- Entire device getting disabled
- Pronunciation issues

**Requested features**

- Dark mode option
- Ability to copy/paste between user profiles
- Larger/expandable buttons
- Improved scrolling
- Automatic backup feature


### RadSounds Cause/Effect

[App page](https://appshunter.io/ios/app/radsounds-causeeffect/id420977569)

This music program allows users to create custom playlists by recording, importing, or using provided songs. It offers multiple playback modes and is switch-friendly for individuals with physical challenges.

**Highlights:** Customizable music playlists, Record or import audio, Momentary playback mode, Timed playback mode, Advanced playlist cycling, Switch-friendly access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Proloquo2Go AAC free?

Proloquo2Go AAC costs $249.99, and also offers in-app purchases.

### Is RadSounds Cause/Effect free?

RadSounds Cause/Effect costs $1.99, with no in-app purchases.

### Which has better reviews, Proloquo2Go AAC or RadSounds Cause/Effect?

Proloquo2Go AAC is rated higher. Proloquo2Go AAC averages 4.8 out of 5 from 12K ratings, while RadSounds Cause/Effect averages 4.5 from 2 ratings.

### Do Proloquo2Go AAC or RadSounds Cause/Effect have ads?

Neither Proloquo2Go AAC nor RadSounds Cause/Effect shows ads.

### Which is updated more often, Proloquo2Go AAC or RadSounds Cause/Effect?

Proloquo2Go AAC ships an update every 3 months, and RadSounds Cause/Effect every 11 months. Most recently, Proloquo2Go AAC was updated on November 11, 2026 and RadSounds Cause/Effect on November 1, 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.*