Hello AppleVis community,

I'm Meriç Karaca, the developer of ZeroTTS. I'd like to invite VoiceOver users to help test the app through TestFlight. My aim is to give blind and low-vision users more choice in the voices they listen to every day, while improving responsiveness, clarity and accessibility with feedback from real use.

ZeroTTS provides a selection of male and female voices, with support for 31 languages. Speech is generated on the device, and the voice models are included with the app. You can listen to samples inside ZeroTTS before choosing which voices to enable for VoiceOver. There are also adjustable speech-quality and pause-length settings. The app requires iOS or iPadOS 18 or later.

To get started:
1. Install TestFlight and join the ZeroTTS beta using the link below.
2. Open ZeroTTS, go to Voices, and enable the voices you would like to try.
3. Open Settings > Accessibility > VoiceOver > Speech, choose your language, and select a ZeroTTS voice. Depending on your iOS version and setup, you may add it through Add Rotor Voice.
4. Try it during everyday VoiceOver navigation as well as with the app's built-in samples.

This is an actively developed beta. Response delays, pronunciation issues and incomplete word endings are still being investigated; results can vary by voice, language and device. A voice sounding good in a sample does not necessarily mean it will work equally well when navigating quickly with VoiceOver. That is an important part of what I would like to test.

Feedback would be especially helpful on:
- How quickly speech begins when you move to a new item, compared with returning to an item that has already been spoken.
- Whether words and sentence endings are read completely, including names and app names.
- Individual letters while typing, numbers, dates and times in your language.
- Pauses, speech at faster rates, audio quality and any unexpected sounds.
- Whether enabled voices appear in VoiceOver's list, and how the app performs on older iPhones and iPads.

Please reply here or send feedback through TestFlight. Include your device model, iOS/iPadOS version, ZeroTTS build, selected voice and language, speech rate, and quality/pause settings when relevant. A short non-private example of the text and what you heard would help make pronunciation reports reproducible.

Thank you for helping shape ZeroTTS around the needs of people who use VoiceOver every day. Testers in all supported languages are welcome!

Disclosure: This post was drafted with AI assistance using information from my ZeroTTS development work.

Join the ZeroTTS beta on TestFlight:
https://testflight.apple.com/join/n2ZfJ2Sa

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