Gautham Krishna

Tara

Accessible AAC app concept for speech output and phrase building

Tara

Tara is a design-only AAC concept. AAC, or Augmentative and Alternative Communication, refers to communication systems that help people communicate when they cannot rely on natural speech. Tara focuses on phrase building, quick speech output, recovery from accidental taps, and a calm interface that works for repeated daily use.

Role: Product DesignDomain: AACFocus: Accessibility-first mobile UI

Showcase layout

1) Core communication flow

Tara splash screen with calm blue branding

Splash
A quiet entry point with a soft blue palette and clear brand mark.

Tara home screen with sentence builder, large symbol buttons, Speak button, Clear, and Undo

Home
Phrase builder, large communication buttons, and speech output in one stable layout.

Tara quick access screen with reusable phrases and yes no help buttons

Quick access
High-frequency phrases stay close, reducing effort for urgent communication.

Tara history screen listing recently used phrases

History
Recent phrases can be reused without rebuilding a sentence from scratch.

2) Categories and customization

Tara categories screen with feeding, leisure, place, education, time, work, and other communication groups

Categories
Color groups structure the vocabulary without turning color into decoration.

Tara feeding category screen with food and drink related communication tiles

Feeding category
Nested vocabulary keeps specific needs available after one clear decision.

Tara add phrase screen for creating a reusable quick access phrase

Add phrase
Personalization supports individual vocabulary instead of forcing a fixed phrase set.

Tara category layout exploration version one

Category exploration 1
Layout study for grouping vocabulary into easy scanning zones.

Tara category layout exploration version two

Category exploration 2
Alternate spacing and hierarchy exploration for the same category model.

Design system

Tara uses Atkinson Hyperlegible Free because it is designed for accessibility, has clear character differentiation, performs well at large button sizes, and gives the product a neutral but warm voice.

The color system is intentionally restrained:

  • Blue supports communication, clarity, and trust.
  • Teal adds warmth without overstimulation.
  • The palette stays adult-appropriate and works across age groups.
  • Softer blues and teals reduce anxiety compared with red or orange-heavy systems.

Color is used as structure. Category colors help people understand groups and location, while core actions keep consistent placement and contrast.

Interaction principles

Large, forgiving touch targets are central to the concept. The interface avoids dense controls, keeps bottom navigation predictable, and repeats important actions in stable positions so users can build muscle memory.

Error tolerance is treated as a primary feature:

  • Undo is always visible near the sentence builder.
  • Clear is separate and visually softer than speech output.
  • Destructive actions require recovery paths.
  • Accidental tap protection matters, especially for people with motor impairments.

Accessibility notes

Symbols are paired with text labels to avoid relying on icon interpretation alone. Symbols need testing with actual users and caregivers because a visual that seems obvious to a designer can be ambiguous in practice.

The hierarchy is intentionally simple: sentence builder at the top, vocabulary or phrase content in the middle, speech output as the primary action, and navigation at the bottom. The goal is to make the app feel dependable rather than busy.

Design decisions

  • Persistent sentence bar makes the current message visible while browsing categories.
  • Quick access supports recurring needs like "Please wait", "Can you repeat that?", "Yes", "No", and "Help".
  • History reduces repeated effort for phrases the user has already spoken.
  • Category overlays keep the user in context instead of sending them through deep page changes.
  • The Speak button is visually dominant and placed below the vocabulary area to confirm intent before audible output.