Features and Requirements

Functional Requirements

• User will be able to use AAC Grid upon opening interface

  • The user will be able to delete word tiles from the sentence bar and clear the entire sentence bar.
  • The system will allow for users to have multiple saved boards and have category-based navigation between them.
  • The system will use text to speech and user will be able to play audio output of the constructed sentence.
  • The user will be able to see the constructed sentence built from their selected word tiles.

• The system will have next word suggestions

  • The system will track word tile usage and unused word tiles.
  • The system will be able to regenerate next word suggestions based predictions from tile usage data.

• Caregiver will have tools for vocabulary management

  • Caregivers will be able to add custom word tiles or remove word tiles.
  • Caregivers will be able to select word tiles to add to grid from vocabulary library.
  • Caregivers will be able to give personalized word suggestions to next word suggestion generator.

• Users will be able to create a user profile with an email and password.

  • Users are not required to have a registered account.
  • Accounts will save user data and can be accessed from different devices.

Non-Functional Requirements

• The app will have a simplified userflow

  • Users must be able to add a word, delete a word, clear a sentence, and speak a sentence in ≤2 taps each from the primary screen.

• When a user presses the speech button for audio output, the audio will play slowly and clearly and will be uninterrupted until the sentence is complete.

  • Speech takes place within 1 second of the button being tapped.

• A user account is not required for sentence formation and speech.

• The app will support text scaling without clipping or overlapping to ensure readability.