Comparison

Text to Speech PDF Reader vs PDF Vault

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 PDF Reader

Listen to your PDF documents with a variety of high-quality voices and languages. The app highlights words as it reads, automatically scrolls pages, and remembers your reading progress. Save and access specific text sections as highlights.

Highlights
  • Listen to PDF documents
  • Multiple high-quality voices and languages
  • Word highlighting and automatic scrolling
  • Resume reading from last position
  • Save and access text highlights
  • Crop feature to skip content
  • Sync documents across devices
Features
Read full description

Read along to enhance comprehension or just kick back and listen to any PDF. * Dozens of high-quality voices in multiple languages to choose from with additional voices available to download on your device for free. * Choose a primary and secondary voice and switch between them easily as you read. * The app will highlight words as it reads and scroll the page automatically. * The app will remember where you left off and scroll to that position automatically next time you open a document. * Select any portion of text to save it as a highlight. * Tap any of your saved highlights and the app will open the pdf and scroll to the appropriate position. * Use the crop feature to skip repeated content that you don't want the app to read. * Support for dynamic type. * Support for Dark Mode. * Save as many pdfs as you want. * Optionally sync your documents with all of your iOS/iPadOS devices. If you enjoy the app please let us know through the in-app contact form and don't forget to rate us! Thank you for trying TTS PDF. --- "TTS PDF Yearly" is an annual auto-renewable subscription for $9.99. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. You can turn off auto-renew up to 24 hours before your next subscription payment is due via your App Store settings page. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Terms of Use: https://bretlester.com/app_content/ttspdf_terms.html Privacy Policy: https://bretlester.com/app_content/ttspdf_privacy_policy.html

About

PDF Vault

This ultra-lightweight application offers a comprehensive suite of PDF tools, including text-to-speech functionality, digital signing, document scanning, organization, and instant translation. It's designed for efficiency and ease of use, saving device space while enhancing productivity for work, study, or personal tasks.

Highlights
  • Text-to-speech for PDFs
  • Digital document signing
  • Scan paper documents to PDF
  • Organize and manage PDF files
  • Instant document translation
  • Ultra-lightweight and fast
Features
Read full description

Your private PDF workspace, built for people who take their documents seriously. Ask your PDFs questions, understand complex documents, translate, scan, sign, listen, and manage your files in one lightweight app. PDF Vault combines powerful PDF tools with a privacy-first approach: your documents stay on your device. ASK YOUR PDF ANYTHING Have a long report, contract, research paper, manual, or other document? Just ask. Ask PDF lets you ask questions about the content of your document and get answers based on the information inside it. Find important details, understand complex sections, summarize information, and explore your documents without searching through page after page. Your documents stay private and are processed on your device. PRIVATE BY DESIGN Your documents are personal. PDF Vault is designed with privacy at its core. Your PDF data never leaves your device. No document uploads are required for the core PDF experience. Your files remain under your control while you work with them. ALL THE PDF TOOLS YOU NEED Listen to PDFs Turn your documents into spoken audio with built-in text-to-speech. Listen while working, commuting, studying, or simply when you prefer to hear rather than read. Translate PDFs Translate documents and understand content in other languages without leaving your PDF workspace. Scan documents Turn paper documents into digital PDFs using your device camera. Built-in OCR helps make scanned documents searchable and usable. Sign PDFs Sign documents quickly and conveniently. Add your signature and complete documents without printing them. Read and organize Open, read, manage, and organize your PDF files in a clean, focused workspace designed to stay out of your way. LIGHTWEIGHT AND FOCUSED PDF Vault is built to give you the tools you actually need without turning your device into a document-management maze. Whether you are working with contracts, invoices, academic papers, reports, forms, manuals, or personal documents, PDF Vault keeps everything you need close at hand. FOR WORK, STUDY, AND EVERYDAY DOCUMENTS Use PDF Vault at work to understand reports and contracts. Use it at university to explore research papers and study materials. Use it at home to manage forms, manuals, receipts, and other important documents. ONE PRIVATE WORKSPACE FOR YOUR PDFs Read. Ask. Translate. Scan. Sign. Listen. Organize. PDF Vault brings essential PDF tools together while keeping privacy at the center of the experience. PDF Vault Unlimited gives you unlimited access to all PDF Vault features while directly supporting our mission to provide the best privacy-first PDF tool where your data never leaves your device. Terms of Service: https://macmonsters.com/pdf-reader-terms-of-service.html

Screenshots

Text to Speech PDF Reader4 screens
PDF Vault2 screens

Verdict

The call

The clearest difference is monetization model: PDF Vault at free with in-app purchases against Text to Speech PDF Reader's subscription. Text to Speech PDF Reader's advantage is iOS requirement (16.0 vs 18.1). On price, review sentiment, update cadence and ads 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 PDF Reader sells 10 in-app purchases, starting at $0.99 per 7 days and PDF Vault sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Text to Speech PDF Reader ships an update every 10 days, PDF Vault fortnightly. The most recent releases landed on September 27, 2026 and September 26, 2026 respectively.

Scorecard2 real differences · 8 level
Text to Speech PDF Reader versus PDF Vault: the parameters behind the verdict, then further details
ParameterText to Speech PDF ReaderPDF Vault
PriceFreeFree
Rating4.5 (552 ratings) — better—
Positive reviews45.8% of reviews50.0% of reviews — better
Number of ratings552 — better—
Update frequencyEvery 10 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS16.0 — better18.1
Further details — not scored
Size12 MB4 MB
Age rating4+4+
DeveloperBret LesterDmytro Skorokhod

Customer experience

Text to Speech PDF Reader

All ratings552 ratings
Positive86.1%
Neutral4.0%
Negative10.0%
Written reviews166 reviews
Positive45.8%
Neutral4.8%
Negative49.4%

PDF Vault

Written reviews6 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

Bugs and requests

Text to Speech PDF Reader

Reported bugs

8 issues
  • Skips paragraphs and double plays when pausing
  • Erased files without consent
  • Doesn't work with two-column text
  • Reads text backwards
  • Unable to copy/paste or open certain files
Show 3 more
  • Skips sentences and doesn't read column text in the correct order
  • Skips whole paragraphs
  • Glitches and gets stuck in a reading loop

Requested features

7 requests
  • Add ability to read alternate text (alttext) in PDFs
  • Improve voice quality and options
  • Add ability to organize files in folders
  • Add mobile-friendly version
  • Improve handling of scanned/column PDFs
Show 2 more
  • Add ability to skip headers/page numbers
  • Improve pronunciation of uncommon words

PDF Vault

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Text to Speech PDF Reader

Subscriptions9
  • TTSPDF Unlimited Weekly7 Days trial$0.997 Days
  • TTS PDF Yearly7 Days trial$9.991 Year
  • Premium Weekly$9.997 Days
Show 6 more
  • Premium Weekly7 Days trial$9.997 Days
  • TTS PDF Basic7 Days trial$12.991 Year
  • Premium Monthly$29.991 Month
  • Premium Monthly7 Days trial$29.991 Month
  • Premium Annual$119.991 Year
  • Premium Annual7 Days trial$119.991 Year
One-time1
  • 1 Million Characters$39.99
2 purchases

PDF Vault

Subscriptions2
  • Mox PDF Tool Unlimited Monthly7 Days trial$4.991 Month
  • Mox PDF Tool Unlimited Annually7 Days trial$19.991 Year

Questions

Is Text to Speech PDF Reader free?
Text to Speech PDF Reader is free to download, with in-app purchases available.
Is PDF Vault free?
PDF Vault is free to download, with in-app purchases available.
Do Text to Speech PDF Reader or PDF Vault have ads?
Neither Text to Speech PDF Reader nor PDF Vault shows ads.
Which is updated more often, Text to Speech PDF Reader or PDF Vault?
Text to Speech PDF Reader ships an update every 10 days, and PDF Vault fortnightly. Most recently, Text to Speech PDF Reader was updated on September 27, 2026 and PDF Vault on September 26, 2026.

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