# aac-app-development

Published articles for aac-app-development.

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## Inside Tacit, an AAC App Built Around a Two-Tap Rule

DevFeed: [Inside Tacit, an AAC App Built Around a Two-Tap Rule](<https://devfeed.tech/articles/inside-tacit-an-aac-app-built-around-a-two-tap-rule-63976.md>)

Original publisher: [Read original article](<https://hackernoon.com/inside-tacit-an-aac-app-built-around-a-two-tap-rule?source=rss>)

Author: sakib

Published: 2026-10-02T00:46:24Z

Content type: article

Language: en

Sources: [HackerNoon](<https://devfeed.tech/sources/hackernoon.md>)

Topics: [SwiftUI](<https://devfeed.tech/topics/swiftui.md>), [User interface design](<https://devfeed.tech/topics/ui-design.md>), [iphone](<https://devfeed.tech/topics/iphone.md>), [Whisper](<https://devfeed.tech/topics/whisper.md>), [A/B Testing](<https://devfeed.tech/topics/a-b-testing.md>)

Tags: [aac-app-development](<https://devfeed.tech/tags/aac-app-development.md>), [ai](<https://devfeed.tech/tags/ai.md>), [api](<https://devfeed.tech/tags/api.md>), [apple-foundation-models](<https://devfeed.tech/tags/apple-foundation-models.md>), [assistive-communication](<https://devfeed.tech/tags/assistive-communication.md>), [groq](<https://devfeed.tech/tags/groq.md>), [groq-api](<https://devfeed.tech/tags/groq-api.md>), [on-device-ai](<https://devfeed.tech/tags/on-device-ai.md>), [revenuecat](<https://devfeed.tech/tags/revenuecat.md>), [shipaton](<https://devfeed.tech/tags/shipaton.md>), [speech](<https://devfeed.tech/tags/speech.md>), [swiftui](<https://devfeed.tech/tags/swiftui.md>), [swiftui-accessibility](<https://devfeed.tech/tags/swiftui-accessibility.md>), [tacit](<https://devfeed.tech/tags/tacit.md>)

### AI overview

The article recounts how a solo developer built Tacit, an iOS augmentative and alternative communication app designed to help people who cannot rely on speech communicate quickly and with dignity. It describes the two-tap design rule, a SwiftUI architecture that selects among on-device AI, a Groq cloud relay, and an offline phrase engine, as well as privacy choices, translation, subscription setup, and bugs found during development. The author also shares lessons about schema design for small language models, fallback behavior, App Store configuration, and testing on real devices.

### Source excerpt

How Tacit combines SwiftUI, on-device AI, Groq, offline fallbacks, translation, and RevenueCat to help people communicate without speech.