AI Text to Speech - Sento
Studio-Grade AI Voice Engine
$17.99
Sento is a professional-grade text-to-speech studio that runs entirely on your device. No internet required. No subscriptions. Pay once, use forever.
COMPLETELY OFFLINE & PRIVATE
Every voice generation happens 100% on-device using Apple Silicon. Your text, voices, and audio files never leave your device. No data is sent to any server — ever. No account required.
VOICE CLONE — SOUND LIKE ANYONE
Upload just 10 seconds of reference audio and Sento clones that voice with studio-grade fidelity. 48 kHz output quality. Use it for audiobooks, podcasts, content creation, or personal projects.
VOICE DESIGN — CREATE ANY VOICE
Don't have reference audio? Simply describe the voice you want — "warm female voice, mid-30s, conversational" — and Sento generates an entirely new speaker from your description.
30 LANGUAGES, ZERO CONFIGURATION
Supports Arabic, Burmese, Chinese, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Indonesian, Italian, Japanese, Khmer, Korean, Lao, Malay, Norwegian, Polish, Portuguese, Russian, Spanish, Swahili, Swedish, Tagalog, Thai, Turkish, and Vietnamese. Language is detected automatically — just type and generate.
VOICE LIBRARY
Save your favorite voices — cloned or designed — in the built-in library for instant reuse. Build your personal collection of characters and speakers.
MULTI-SPEAKER DIALOGUE
Create natural conversations between multiple speakers. Each speaker gets their own voice, and tone flows automatically between dialogue lines for natural-sounding exchanges.
DIRECTION CONTROL
Add emotion and style to your speech: cheerful, whispered, dramatic, calm, fast, slow — tap to insert, the AI handles the rest.
DEVICE REQUIREMENTS
Sento runs a 3 GB on-device AI model and requires devices with sufficient memory:
- iPhone: iPhone 15 Pro or later (6 GB+ RAM)
- iPad: iPad with M1 chip or later (8 GB+ RAM)
- Mac: Any Apple Silicon Mac (M1 or later, 8 GB+ RAM)
Older or lower-memory devices may experience crashes during generation.
ONE-TIME PURCHASE
No subscription. No in-app purchases. No ads. Pay once and use Sento forever, including all future updates.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Guan Lun Chen, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Guan Lun Chen
- Size
- 3.2 GB
- Category
- Productivity
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Guan Lun Chen
