Comparison

Text to Speech vs Book Stereo

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

Head to head
About

Text to Speech

Read full description

Turn anything you need to read into audio. Text to Speech: Zen reads text, PDFs, documents, e-books, webpages and scanned pages aloud. Paste, import, scan or add a link, choose a voice, and press play. LISTEN YOUR WAY Use voices available on your device at no cost. Upgrade to expressive AI voices or create a personal voice clone from a short recording. Adjust playback from 0.6× to 2× and follow along with word highlighting where supported. BRING YOUR READING INTO ZEN • Type or paste text • Import PDF, DOCX, EPUB, FB2, TXT and other text-based files • Add a webpage link to extract readable article text • Scan printed text with your camera or photo library • Create reusable phrase lists TURN READING TIME INTO LISTENING TIME Study notes, reports, long articles and e-books—turn your backlog into audio. Zen remembers your playback progress, so you can return to a document and continue where you left off. FOR STUDY Listen to notes, research and course materials. Follow the text when highlighting is available, or simply listen at a pace that works for you. FOR WORK Catch up on reports, documents and articles when you would rather listen than stare at another screen. FOR READING COMFORT Switch from reading to listening when screens feel tiring. Choose a voice and speed that feel comfortable. SAVE THE AUDIO Premium can export supported AI narration as an MP3 after it has been generated. YOUR CONTENT AND PRIVACY Your document library is stored on your device. Cloud-powered AI narration, webpage extraction, voice cloning and analytics involve external service providers. Learn more in our Privacy Policy. Some features, including AI voices, voice cloning and MP3 export, require an active subscription. Voice and language availability varies by device and plan. Highlighting availability varies by document type. Privacy Policy: https://transcribezen.com/privacy Terms of Use: https://transcribezen.com/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Book Stereo

Features
Read full description

Turn any book into a personalized audiobook instantly, in any voice, speed, or language. Instantly convert any PDF or ePub file into a personalized audiobook. Book Stereo transforms the way you experience stories - bringing books to life through immersive, high-quality audio. Whether you’re at home, commuting, or unwinding, you can listen, explore, and dive deeper into stories like never before. Audiobooks offer a hands-free, engaging way to enjoy content anywhere, making them perfect for multitasking and modern lifestyles. - Key Features Immersive Stereo Audio Experience stories in rich, layered sound designed to pull you into every moment. Listen Anytime, Anywhere Stream or download your content and enjoy it on the go. Seamless Playback Pause, resume, and pick up exactly where you left off. Multi-Task Friendly Enjoy stories while driving, working out, or relaxing—no screen required. - Why BookStereo? Reading is evolving. Audio storytelling allows you to experience books in a more immersive and accessible way—combining performance, sound, and narrative into one powerful format. Book Stereo takes this even further with enhanced stereo sound design—making every story feel alive. Select your narrator and speed and listen to any Book at your convenience. Already bought the physical book and don't want to download the pdf? No problem, our built in PDF reader allows you to take a picture of the page, upload in seconds and get the text read back to you.

Screenshots

Text to Speech4 screens
Book Stereo4 screens

Verdict

The call

The clearest difference is ads: Book Stereo at none against Text to Speech's shown. Book Stereo also leads on iOS requirement (13.0 vs 15.5). On price, update cadence, in-app purchases and device support 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

Both are free to download. Text to Speech sells 2 in-app purchases, starting at $5.99 per 7 days and Book Stereo sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Text to Speech ships an update every 4 months, Book Stereo every 3 months. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 4 level
Text to Speech versus Book Stereo: the parameters behind the verdict, then further details
ParameterText to SpeechBook Stereo
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.513.0 — better
Further details — not scored
Size101 MB91 MB
Age rating4+4+
DeveloperVlad Gavrulash2773520 Ontario Inc.

In-app purchases

2 purchases

Text to Speech

Subscriptions2
  • Premium Weekly$5.997 Days
  • Premium Monthly3 Days trial$19.991 Month
2 purchases

Book Stereo

Subscriptions2
  • Premium Monthly$9.991 Month
  • Ultimate Monthly$19.991 Month

Questions

Is Text to Speech free?
Text to Speech is free to download, with in-app purchases available.
Is Book Stereo free?
Book Stereo is free to download, with in-app purchases available.
Do Text to Speech or Book Stereo have ads?
Text to Speech shows ads; Book Stereo does not.
Which is updated more often, Text to Speech or Book Stereo?
Text to Speech ships an update every 4 months, and Book Stereo every 3 months. Most recently, Text to Speech was updated on November 9, 2026 and Book Stereo on November 5, 2026.

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