Comparison

Sandbook vs TTS Flow Now

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sandbook

This app reads books, documents, and articles aloud using natural-sounding voices. It offers offline functionality, supports various file formats, and allows customization of reading speed and appearance. Save web pages and printed text for later listening.

Highlights
  • Natural offline voices
  • Supports EPUB, PDF, DOCX, TXT, and more
  • Save web pages for later
  • Adjustable reading speed
  • Highlighting of spoken words
  • CarPlay integration
  • Export audio files
Features
Read full description

Sandbook reads books, documents and articles aloud in natural voices that run on your iPhone or iPad. You can listen offline, nothing you read is uploaded, and there is no account and no ads. Press play, lock your screen and keep listening: on a walk, while you cook, or in the car with CarPlay. LISTEN TO WHAT YOU READ - EPUB, PDF, Word (.docx), TXT, RTF, Markdown and HTML files, from the Files app or any app's share sheet - Web pages: paste a link, or tap Save to Sandbook in Safari, Chrome and other apps, and they wait in Listen Later - Printed pages: scan them with the camera or pick a photo - Your own text: type or paste it - A shelf of public-domain classics in English, Spanish, French, Italian, Portuguese and Hindi, with a short sample before you download NATURAL VOICES, ON YOUR DEVICE - 41 voices in American and British English, Spanish, French, Italian, Brazilian Portuguese and Hindi, all included in the app - A book in Spanish, French, Italian, Portuguese or Hindi opens with a voice in its language - Powered by the open-source Kokoro model, running locally - Each spoken word is highlighted, so you can follow along - Speed from 0.5x to 2.5x; each book remembers its voice and speed - Pronunciations: tell Sandbook how to say a name or word, in every book or just one MADE FOR LONG LISTENING - Opens at the paragraph where you stopped - Lock screen controls with the chapter's progress and 15-second skips - CarPlay: continue your book, or pick one from your library or Listen Later - Widgets for the Home Screen and Lock Screen, and a Play Sandbook control for Control Center and the Action button - Sleep timer: stop after a set time or at the end of the chapter - Continue Reading with Siri or the Shortcuts app READ CLOSELY, KEEP WHAT MATTERS - Select any text to look up a word or translate it - Bookmark passages and export them as a text or Markdown file - Search inside a book; in a PDF, tap any sentence to read from there - Export a chapter or a whole book as one M4A audio file with chapter markers, or any text you type - Light, sepia and dark themes, fonts, text size and line spacing ACCESSIBILITY - VoiceOver, Voice Control, Switch Control, larger text and contrast improvements - The app is available in English, Spanish, French, Italian, Portuguese (Brazil) and Hindi PRIVATE BY DESIGN Your books, text and voices stay on your device. Sandbook never sends what you read to a server. GOOD TO KNOW - Voices require iPhone 12 or later, or an iPad with an A14 or M1 chip or later. Sandbook also needs iOS 18.2 or later. Questions or ideas: support@sandbook.app

About

TTS Flow Now

Convert any text into natural-sounding speech with customizable voices, speed, and pitch. Save your audio for use in videos, podcasts, or presentations. Processes text on-device for enhanced privacy.

Highlights
  • Text to speech conversion
  • Customizable voice speed and pitch
  • High-quality audio export
  • On-device text processing
  • No character limits
  • Variety of system voices
Features
Read full description

High-Quality Text-to-Speech & Audio Export. Need a voiceover for your next video? Or just want to hear your notes read aloud? TTS Free by Now Studio LLC is the simplest way to convert any text into a natural-sounding voice. TTS Free gives you full control over the output, making it the perfect tool for content creators, students, and accessibility needs. Powerful Features: Copy & Paste Simplicity: Just drop your text in and hit play. No complicated setup required. Complete Customization: Choose from a variety of system voices. Fine-tune the Speed and Pitch to get the exact tone you need—from deep narration to high-energy clips. High-Quality Export: Save your speech as an audio file directly to your phone. Perfect for use in video editing apps, podcasts, or presentations. Unlimited Use: No character limits or hidden subscriptions. Just straightforward text-to-speech. Privacy Focused: Your text is processed on-device. We don’t see what you type, and we don’t store your audio. How to use TTS Free: Paste your text into the main box. Select your preferred voice. Use the sliders to adjust how fast or high the voice sounds. Preview the audio, then hit Export to save it for later! Experience the easiest TTS tool on the App Store. Download TTS Free and start creating today.

Screenshots

Sandbook4 screens
TTS Flow Now1 screens

Verdict

The call

The clearest difference is price: Sandbook at Free against TTS Flow Now's $0.99. Sandbook also leads on update cadence (every 5 days vs every 10 months) and ratings volume (175 vs 2). TTS Flow Now's advantage is rating (5.0 vs 4.7). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Sandbook is free to download; TTS Flow Now costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

TTS Flow Now holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Sandbook has 175 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Sandbook ships an update every 5 days, TTS Flow Now every 10 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Sandbook versus TTS Flow Now: the parameters behind the verdict, then further details
ParameterSandbookTTS Flow Now
PriceFree — better$0.99
Rating4.7 (175 ratings)5.0 (2 ratings) — better
Positive reviews82.9% of reviews—
Number of ratings175 — better2
Update frequencyEvery 5 days — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.2 — better18.6
Further details — not scored
Size126 MB2 MB
Age rating4+4+
DeveloperSmashMelon LLCAmol Srivastava

Customer experience

Sandbook

All ratings175 ratings
Positive90.3%
Neutral5.7%
Negative4.0%
Written reviews35 reviews
Positive82.9%
Neutral11.4%
Negative5.7%

TTS Flow Now

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sandbook

No in-app purchases

None

TTS Flow Now

No in-app purchases

Questions

Is Sandbook free?
Sandbook is free to download, with no in-app purchases.
Is TTS Flow Now free?
TTS Flow Now costs $0.99, with no in-app purchases.
Which has better reviews, Sandbook or TTS Flow Now?
TTS Flow Now is rated higher. Sandbook averages 4.7 out of 5 from 175 ratings, while TTS Flow Now averages 5.0 from 2 ratings.
Do Sandbook or TTS Flow Now have ads?
Neither Sandbook nor TTS Flow Now shows ads.
Which is updated more often, Sandbook or TTS Flow Now?
Sandbook ships an update every 5 days, and TTS Flow Now every 10 months. Most recently, Sandbook was updated on November 6, 2026 and TTS Flow Now on November 5, 2026.

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