Listen2 runs neural text-to-speech directly on your iPhone or iPad. No cloud services. No subscriptions. No accounts.

Most text-to-speech apps either use basic system voices or require monthly payments for cloud processing. Listen2 runs

neural voice models locally, giving you natural-sounding speech without ongoing costs or privacy tradeoffs.

WHAT MAKES LISTEN2 DIFFERENT

Multi-Voice Engines, One App

Piper provides reliable neural voices across 16 languages. Supertonic offers a fresh take on a voice engine — flow-matching models running on Apple's Neural Engine via CoreML for natural rhythm and expressive speech. Choose from 100+ voices in English, Spanish, French,

German, Italian, Portuguese, Russian, and Vietnamese. More languages coming.

Voice Tuning

Fine-tune any voice with quality parameters. Save presets to switch between profiles. Preview pronunciation rules before saving

them.

Import Anything

PDF, EPUB, DOCX, DAISY, clipboard, or web articles. Share from Safari and Listen2 extracts the article text. Paywalled content

works (even sites on which other major TTS apps fail) when shared from a browser where you are logged in.

Machine Learning Word Sync

CTC forced alignment matches audio to text at the word level. Watch each word highlight as it is spoken — across Latin and

non-Latin scripts alike.

Smart Document Reading

Multi-column layout handling, footnote filtering, hyphenated word rejoining. AI Vision for scanned PDFs. Full EPUB, DOCX, and DAISY support.

Figure Descriptions

On-device AI vision generates spoken descriptions of figures, charts, and photos as you listen. For non-English documents,

descriptions translate automatically via Apple's on-device Translation framework. (Works with EPUB and PDF as a first roll-out)

Pronunciation Rules

Fix how any word is spoken without changing display text. Rules for names, terms, or abbreviations. Live preview before saving.

Built-in presets for footnote markers. Global or per-document. Doesn't break highlighting.

True Offline Privacy

Processing, normalization, and synthesis all happen on-device. Documents never leave your phone. No uploads. No accounts. No tracking.

FEATURES

• 100+ neural voices across 10 languages
• Two engines: Piper (broad language support) and Supertonic (high-fidelity CoreML, diffusion based models)
• Import custom Supertonic voices from Voice Builder
• Voice tuning with saveable presets
• Word-by-word or sentence highlighting
• PDF, EPUB, DOCX, DAISY, TXT, Markdown support
• AI figure descriptions with auto-translation
• Collections with intros, cover art, and auto-advance
• Web Article Collections — batch articles into an auto-playing queue
• Clipboard import and Siri shortcut support
• 0.5x to 2.5x playback speed
• Background playback with lock screen controls
• Import from Files, links, Share Extension, or other apps
• Pronunciation rules with live preview
• Atkinson Hyperlegible and OpenDyslexic fonts
• Full VoiceOver support with rotor navigation and Magic Tap

WHO IT'S FOR

• Commuters turning drive time into learning time
• Students reviewing papers and textbooks
• Professionals handling confidential documents privately
• VoiceOver users looking for a fully accessible TTS reader
• Readers with dyslexia who benefit from audio-visual sync
• Anyone tired of TTS subscriptions

One-time purchase. 7-day free trial. No subscriptions.