Voice Lab: STT, TTS & More

Offline speech on device

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Voice Lab: STT, TTS & More is your offline voice studio on iPhone and iPad. Transcribe speech, generate natural voices, and work with audio on your device—without sending recordings to the cloud. Voice tools in one app • Speech-to-text — Turn recordings and live audio into text, fully offline • Text-to-speech — Hear any text in natural-sounding voices • Translation — Translate spoken audio on device • Punctuation — Add commas, periods, and more to plain text with on-device AI • Subtitles — Generate timed subtitles from audio and a transcript • Speech enhancement — Reduce noise and clean up recordings • Voice cloning — Generate speech that matches a reference voice you own or have permission to use • Voice activity detection — Find where speech starts and stops • Download manager — Add larger, more accurate models when you need them • Built for speed — Apple Silicon acceleration on iPhone and iPad via Core ML where supported. Made for real use Whether you’re capturing ideas on the go, prepping content, or just prefer tools that work without Wi‑Fi — Voice Lab keeps speech processing local, fast, and under your control. Free to start. Pro when you need more Generous free limits for everyday use. Upgrade for unlimited usage, ad-free experience, and pro export formats. A note on models Results depend on the model and device you use. You pick the balance of speed, size, and quality. Who it’s for • Creators and power users who need practical audio utilities on the go • Privacy‑conscious users who want offline speech tools • Developers and researchers exploring on-device speech pipelines Privacy & transparency • Local‑first: Processing runs on your device by default • No account required: Get started immediately without sign‑in • You stay in control: Sharing/export only happens when you explicitly choose it • Speech processing stays on your device; optional model downloads, subscriptions, and the free tier (with ads) use the internet • Anonymous usage limits may sync to enforce free-tier quotas. Details in our Privacy Policy Legal Privacy Policy: https://xdcobra.github.io/voice-lab-offline-tools/privacy-policy.html Terms of Use: https://xdcobra.github.io/voice-lab-offline-tools/terms-of-use.html Licensed Application EULA (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Voice Lab Pro (auto-renewable subscription): billed through your Apple ID; renews unless cancelled at least 24 hours before period end; manage in Settings → Apple ID → Subscriptions. Built with open-source technology (MIT): github.com/XDcobra/react-native-sherpa-onnx

Ratings & Reviews

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• Turkish is now available as an app language • Language and voice options are clearer and easier to set when you start a feature • Better word-timing choices, including multilingual timing models • More subtitle (word-timing) models for additional languages • Dialogs show a proper dimmed background again

Version 0.1.4

The developer, Felix Luca Krebs, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Felix Luca Krebs
Size
132.6 MB
Category
Utilities
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 6 more
  • English, German, Korean, Simplified Chinese, Spanish, Turkish, Vietnamese
Age Rating
4+
  • 4+
  • Learn More
  • Contains
    Advertising
    User-Generated Content
In-App Purchases
Yes
  • Offline AI Voice Toolkit Pro $2.99
  • Offline AI Voice Toolkit Lifetime $11.99
  • Learn More
Copyright
© 2026 Felix Krebs
  • Developer Website
  • Privacy Policy

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