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Product Architecture

Loquor AAC is designed as a communication platform with layered support for users, caregivers, and clinicians.

One app, three communication models

Communication Modes

Switch between Standard Grid, Activity Boards, and Core-Fringe without changing the core message flow.

Grammar support in real communication

Language Intelligence

Context-aware verb conjugation, noun pluralisation, determiner helper, and form selection across Dutch, English, French, and Spanish.

Always-available speech output

Voice Output

Use device text-to-speech offline and optional ElevenLabs voices online with automatic fallback.

Structured growth from starter to expert

Progressive Learning

Unlock vocabulary in 6 levels with readiness checks, ghost slots, motor memory protection, and per-language progression tracking.

Caregiver and SLP controls built in

Clinical Admin

PIN-protected controls for content editing, user setup, language operations, layout management, and vocabulary pack installs.

Data stays user-controlled

Privacy and Portability

Local-first storage with user-initiated selective backup and restore. No cloud, no tracking, no conversation history stored.

System Capabilities

Communication Engine

Compose with symbols and text in one flow, then speak or share with minimal friction.

  • - Message builder with symbol plus text composition
  • - Prediction and abbreviation expansion behaviour
  • - Long-press verb/noun form picker before adding to message
  • - Favourites and category workflows
  • - Share output controls in admin settings

Grid Systems

Choose a communication model that matches cognitive load, context, and care goals.

  • - Standard category grid with motor zone preservation
  • - Activity board navigation for routines
  • - Core-Fringe layouts with pinned core words and multi-page navigation
  • - In-grid editing with drag, add, and remove interactions

Smart Grammar Engine

Context-aware conjugation for Dutch, English, French, and Spanish - all offline, all automatic.

  • - Verb conjugation: present, past, perfect, continuous, future tenses
  • - Modal verbs, reflexive constructions, multi-clause sentences
  • - French: elision, interrogative inversion, noun phrase gender agreement
  • - Noun pluralisation via long-press with grammar reconjugation
  • - Grammar bar with colour-coded determiner chips
  • - Three assist levels: Simple, Standard, Expert

Progressive Vocabulary

A 6-level learning system that protects motor memory while growing vocabulary through demonstrated usage.

  • - 6 levels with per-level evaluation pools (only new words count)
  • - Motor memory protection: word positions never change
  • - Ghost slots preview locked words without enabling interaction
  • - Floating Readiness Button with live percentage progress
  • - Expert Vocabulary toggle for Level 6 words
  • - Per-language independent progression state

Voice and Output

Maintain communication continuity across network conditions and provider failures.

  • - Device voice provider with configurable pitch and rate
  • - Optional ElevenLabs integration with local audio cache
  • - Automatic fallback to device speech on any failure
  • - Preview and provider switching in admin settings

Clinical Admin and Content

Structured operations for care teams managing symbols, layouts, users, and settings.

  • - Settings, Content, Language, and Users administration
  • - PIN protection and admin lock behaviours
  • - Symbol, phrase, abbreviation, board, and layout management
  • - Vocabulary pack install, grammar data sync, and reset flows

Data and Portability

Keep communication data local and portable when teams migrate or duplicate setups.

  • - Selective backup and restore with category toggles
  • - Embedded image portability in .vbaac backup payloads
  • - Multi-user profile isolation with separate databases
  • - Duplicate-user and migration workflows

Explore Specific Areas