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Audio & Voice AI

Voice Overlay for iOS

Voice Overlay for iOS is a Swift library that provides a customizable voice-input overlay for iOS apps, handles microphone and speech-recognition permission flows, and converts speech to text using Apple’s native SFSpeechRecognizer.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Voice Overlay for iOS — OpenViST project profile in Audio & Voice AI.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when an iOS app needs an integrated voice-input interface that returns speech as text for a search, conversation, or other app workflow.

Who it is for

  • iOS developers adding voice input to an app.
  • Teams building spoken-query search or conversational interfaces.

Documented uses

  • Present a customizable microphone and listening interface.
  • Collect permission descriptions and guide users toward Settings when access is missing.
  • Receive recognized speech as text, with final-result and error information.
  • Adjust overlay screens, suggested prompts, automatic recording, silence timeout, or speech locale.
Before you choose

Requirements & limits

The repository is public and lists an MIT license. The README documents dependency installation through Swift Package Manager, CocoaPods, and Carthage.

  • Speech-to-text conversion uses Apple’s native SFSpeechRecognizer.
  • The app must include microphone and speech-recognition usage descriptions in Info.plist.
  • The overlay can guide users to the relevant Settings section when permissions are missing.
  • The README documents Swift Package Manager use with Xcode 11 or later.
  • Locale can be supplied to the speech controller, and a custom controller can implement Recordable.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Add Voice Overlay and receive recognized text

Configure an iOS app to present the overlay and receive speech text and errors.

Before you start

  • An iOS project using Swift.
  • Xcode 11 or later when adding the dependency through Swift Package Manager.
  • Microphone and speech-recognition usage descriptions in the app’s Info.plist.

Steps

  1. Add the repository as a Swift Package Manager dependency, or install InstantSearchVoiceOverlay through CocoaPods or Carthage using the documented instructions.

  2. Add the microphone and speech-recognition privacy usage-description strings to Info.plist.

  3. Import InstantSearchVoiceOverlay and create a VoiceOverlayController in a view controller.

  4. Call start(on:textHandler:errorHandler:) and handle the returned text, final-result flag, and errors.

Expected outcome

The app can display the voice overlay and receive recognized text and error events through the supplied handlers.

Guide limitations

  • This guide covers the documented integration stages; it does not establish recognition accuracy or device and locale compatibility.
  • The app must request the relevant permissions through the required usage descriptions.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
algolia/voice-overlay-ios · Official homepage title · retained in its source language
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