It's not on Play (Google rejected the accessibility use), so it's an APK from GitHub releases, built by GitHub Actions from the source.
Did you explain its use as an accessibility aid being its core feature for differently abled people? If you have explained that as a core feature google could've budged. You would've needed to limit the API to select few like OpenAI, Gemini, Claude with additional guardrails and use reporting. But, it could've been accepted by google.