# AI Text to Speech - Sento — Studio-Grade AI Voice Engine

> Studio-Grade AI Voice Engine (iPhone/iPad app by Guan Lun Chen.)

- Source: https://appshunter.io/ios/app/ai-text-to-speech-sento/id6762296227 (this page in markdown: same URL + `.md`)
- Developer: [Guan Lun Chen](https://appshunter.io/developer/1887898366)
- Category: Productivity, Utilities
- Price: $17.99
- Age rating: 4+
- Requires: iOS 18.0 · 17 MB
- Languages: American English
- Released: 2026-04-22
- Data updated: 2026-07-05
- User reviews in markdown: https://appshunter.io/ios/app/ai-text-to-speech-sento/id6762296227/reviews.md

## What is AI Text to Speech?

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.


## Version history (last 1 release)

### 1.0 — 2026-04-22

No release notes.

## More apps by Guan Lun Chen

- [AI Voicer Changer](https://appshunter.io/ios/app/ai-voicer-changer/id6761127914)

All apps by Guan Lun Chen: https://appshunter.io/developer/1887898366

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*