Sandbook: Natural Voice Reader

Sandbook: Natural Voice Reader

Text to Speech, Read Aloud TTS

56 ratings
22 reviews
Free

Price history


Details

  • Released
  • Updated
  • May 18, 2025
  • September 18, 2026

Features

Sandbook: Natural Voice Reader video #1 for iPhone
Sandbook: Natural Voice Reader screenshot #2 for iPhone
Sandbook: Natural Voice Reader screenshot #3 for iPhone
Sandbook: Natural Voice Reader screenshot #4 for iPhone
Sandbook: Natural Voice Reader screenshot #5 for iPhone
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About

This app converts text into natural-sounding speech using an on-device model. Read ePub, PDF, and TXT files, type or paste text, or even read webpages aloud. Export audio files for offline listening with complete privacy.

✓On-device text-to-speech
✓Reads ePub, PDF, TXT files
✓Type or paste text
✓Read webpages aloud
✓Export audio files
✓Privacy protection
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What's New in Sandbook

1.0.3

September 18, 2026

Sandbook 1.0.3 is a big stability and quality update. NEW • Prepare a chapter's audio ahead of time and keep listening with the screen locked. Shows progress and time remaining. • Share to Sandbook: send EPUB, PDF, TXT, RTF or selected text from any app. • Shortcuts: "Open Sandbook" and "Add Text to Sandbook". • RTF import. • Save typed, pasted or web text to your library. • Search chapters, jump to a page, drag to any position. • PDF table of contents when the file has one. • Optional Keep Screen Awake while reading. • Haptic feedback (can be turned off in Settings). • VoiceOver labels, Dynamic Type and Reduce Motion support. IMPROVED • PDFs no longer pause at every line break; hyphenated words are read as one word. • Large EPUBs open faster and use far less memory. • Pasted text reads every paragraph; no skipped or repeated sentences. • Pause and resume no longer skip sentences; changing chapter or voice no longer overlaps audio. • Importing a file with the same name no longer overwrites the old one. A damaged library index is repaired automatically. • An EPUB with one unreadable chapter now opens; playback continues if a single sentence cannot be voiced. • Web pages load faster and in the right order. • Audio export uses much less memory. • Sandbook no longer silences other apps' audio while paused in the background. • Your reading progress carries over from the previous version. Requires iOS 18.2 or later.

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User reviews

Get it!

It’s quite amazing!

Great voice, struggles with prosody

The voice itself is great. It sounds very human. But it struggles with pronouncing certain things and where to pause in sentences and phrases. The PDF I fed it had the word clothing split between two lines with a between CLOTH on first line and ING on second line. It pronounced it as two words instead of one. Another example is the words great apes. It pronounced it “gray-it ai-ips.” The word laid was pronounced “lay-id.” It also pauses at the end of every line for as long as at the end of every song entrance, making the reading choppy. The funniest was when humans was split between lines as hu-mans and it pronounced it “who” pause “mans.”

Would love using the voice, if the reading flowed and pronunciation improved!
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Feedback

Phenomenal, wish there was a built in dictionary too.

En attendant une voix française

Cette appli est la meilleure de celles que j’ai testé pour lire des documents textes mais le problème est qu’il n’y a pas de voix françaises, ce qui fait que les textes sont lus avec un terrible accent anglais ou américain selon la voix choisie. J’espère qu’une voix française arrivera bientôt. Sinon, super app pour n’importe quel texte en anglais. 👌
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무료라서 좋아요..

정말 잘 쓰고 있습니다

Developer apps

FAQ

Why doesn't Sandbook support background/screen-off reading?

Sandbook utilizes a large on-device model that requires significant GPU/VRAM. Apple's policies prohibit apps using high GPU/VRAM from running in the background.

Is it normal for my phone to heat up or crash when using Sandbook?

Heating up is normal due to the app's GPU utilization. Crashing may occur on devices with low memory (3GB or less), such as older iPhone models.

What languages does Sandbook support?

Sandbook currently supports English (US/UK) voices, offering both male and female options with natural pronunciation and intonation.

How does Sandbook protect my privacy?

All your data remains on your device and is never sent to the cloud or shared externally, ensuring complete privacy protection.

What file formats can Sandbook read?

Sandbook can read ePub, PDF, and TXT files, allowing you to listen to your documents with natural-sounding voices.

Can I export audio from Sandbook?

Yes, you can generate short speech samples and export them for further use, making it convenient for creating audio content.

What is the update frequency for Sandbook?

The app was last updated on 2025-12-27, indicating active development and support.

What devices is Sandbook compatible with?

Sandbook is available for iPhone and iPad, running on iOS.