Proloquo2Go: Comprehensive Symbol-Based AAC

Overview

Proloquo2Go by AssistiveWare is one of the most well-known and widely used symbol-based Augmentative and Alternative Communication (AAC) applications available. Launched in 2009 and based in Amsterdam, Netherlands, AssistiveWare has established Proloquo2Go as a “gold standard” in the AAC field.

While Proloquo2Go was initially designed with a focus on children and adolescents with developmental disabilities, it has become a valuable tool for adults with various communication needs, including those with aphasia following stroke or brain injury.

It’s worth noting that AssistiveWare now also offers “Proloquo,” a newer, subscription-based AAC app that is distinct from Proloquo2Go reviewed here.

For Individuals with Aphasia & Caregivers

Key Features

• Symbol-Based Communication: Uses a large library of symbols (SymbolStix, 25,000+ claimed) alongside text labels to support users with varying literacy levels.

• Research-Based Vocabulary (Crescendo™): The default vocabulary system focuses on core words (high-frequency words making up ~80% of speech) placed consistently for motor planning, alongside extensive fringe vocabulary (10,000+ words) organized in folders.

• Progressive Language: Feature allows gradual introduction of vocabulary by hiding/revealing buttons in a developmental sequence without changing button locations.

• Grammar Support: Built-in support for verb conjugations, plurals, and possessives.

• Text Input Option: Includes keyboard options (Grid/QWERTY) with word prediction for literate users.

• Natural-Sounding Voices: Offers over 100 free downloadable text-to-speech voices, including children’s voices, across multiple languages and accents. Supports Apple’s Personal Voice.

• Bilingual Support: Can use two languages simultaneously, switching mid-sentence.

• Apple Watch Integration: Allows communication directly from Apple Watch.

• Social Sharing: Can share messages via email and social media.

Usability & Accessibility

• Symbol support aids users with varying literacy levels
• 23 grid sizes (9 to 144 buttons) to accommodate different visual and motor skills
• Supports various access methods including direct touch, switch scanning, and Apple’s VoiceOver screen reader
• Settings for fine-motor challenges (e.g., hold duration, select on release)
• Settings for vision impairments
• Auditory cues available
• Marketed as easy to use, though some users find the folder-based navigation cumbersome

Cost & Access

• Price: $249.99 USD / £249.99 GBP (one-time purchase)
• Sales: 50% off typically offered during Autism Acceptance Month (April) and sometimes in October
• Educational Discount: 50% discount for 20+ licenses through Volume Purchase Program (VPP)
• In-App Purchases: Additional vocabularies like Gateway available
• Platforms: iOS (iPhone, iPad, Apple Watch) only. Requires iOS 17.5+ / watchOS 10+ for latest versions
• macOS: Available as a separate purchase

User Experiences

Proloquo2Go has high ratings on the App Store (4.8 stars from 10.7K ratings in US store). Users frequently praise:

• Its effectiveness in giving a voice to those who cannot speak
• High degree of customizability
• Positive impact on communication and independence
• Life-changing results for many users

Criticisms sometimes relate to:

• The high cost
• Learning curve for setup and customization
• Navigation complexity, especially with extensive customization

For Speech-Language Pathologists

Therapeutic Approach

While primarily an AAC tool rather than a therapy exercise app, Proloquo2Go’s design aims to foster language development through:

• Core Word Vocabulary: Based on research showing that a small set of core words forms the majority of communication
• Motor Planning: Consistent placement of core words aims to facilitate learning through motor memory
• Modeling: The app is designed to be used with the evidence-based strategy of modeling, where communication partners use the AAC system to talk with the user
• Progressive Language: Gradual introduction of vocabulary supports developmental learning

Evidence Base

AssistiveWare emphasizes the research basis for the Crescendo™ vocabulary and features like Progressive Language. Studies comparing Proloquo2Go to other AAC methods have shown varying results depending on the comparison and outcome measure, but generally support its effectiveness.

A pilot study suggested Proloquo2Go might be more intuitive for individuals with aphasia to navigate initially compared to another app (Speak for Yourself), though training was highlighted as crucial for learning. The app is included in reviews of high-tech AAC for aphasia.

Clinical Features

Features valuable for therapy implementation include:

• Highly customizable vocabulary and layout
• Progressive language feature for developmental approach
• Robust grammar support
• Bilingual capabilities
• Multiple access methods for different physical abilities

Professional Reception

Proloquo2Go is widely used and recognized by SLPs, often considered a “gold standard” in AAC. Strengths highlighted include its robust vocabulary, customization, grammar support, and suitability for language development.

However, some SLPs express frustration with:

• The folder-based navigation being cumbersome
• The potential for inconsistent customization impacting motor planning
• Finding other systems more efficient for sentence generation

Many SLPs recommend trialing it alongside other apps to find the best fit for each individual.

Detailed Feature Analysis

Content Library

• Crescendo™ Vocabulary: Research-based core word vocabulary with extensive fringe vocabulary (10,000+ words)
• SymbolStix Symbols: 25,000+ symbols claimed
• Voices: Over 100 natural-sounding text-to-speech voices
• Languages: Supports English, Spanish, French, Dutch
• Gateway Vocabulary: Available as in-app purchase

Customization Options

Users and SLPs can:

• Add/edit buttons and folders
• Use personal photos instead of symbols
• Choose from 23 grid sizes
• Adjust appearance (colors, fonts)
• Select different voices/languages
• Configure grammar support
• Customize access methods

Support & Resources

AssistiveWare provides:

• Extensive support via email (support@assistiveware.com) 7 days a week
• Comprehensive support section on their website with articles and video tutorials
• In-app help materials
• Active user communities on Facebook, including groups specifically for family members, teachers/therapists, and adult users

Strengths & Limitations

Strengths

• Robust, research-based vocabulary system
• High degree of customization
• Strong developer support and active user community
• Natural-sounding voices and multiple language support
• Comprehensive accessibility options
• One-time purchase (no ongoing subscription)

Limitations

• High one-time cost is a significant barrier for many
• iOS-only platform limits accessibility for Android users
• Folder-based navigation can be less efficient for sentence building than some other systems
• Inconsistent customization can potentially hinder motor planning
• Primarily designed for developmental disabilities, with aphasia as a secondary focus

Conclusion

Proloquo2Go represents a comprehensive, highly customizable AAC solution that can be valuable for individuals with aphasia, particularly those who benefit from symbol support. Its strong foundation in language development principles, extensive customization options, and robust support make it a leading option in the AAC space.

The app is particularly well-suited for:

• Individuals with aphasia who have significant reading difficulties and benefit from symbol support
• Users who need a highly customizable communication system
• Those who prefer iOS devices and can manage the one-time cost
• People who may benefit from bilingual support or specialized voices

The high price point remains the most significant barrier to access. For those considering the investment, it’s worth noting that sales typically occur in April and sometimes October, offering a 50% discount. SLPs often recommend trialing multiple AAC apps to determine the best fit for each individual’s specific needs and abilities.