Comparison

ChmPlus Lite vs Text to Speech PDF Reader

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

Head to head
About

ChmPlus Lite

This app allows you to read and manage various document formats, including CHM and EPUB, on your iPhone or iPad. It offers features like highlighting, bookmarking, searching, and file transfer. You can also manage files, create text documents, and save images.

Highlights
  • Read CHM and EPUB files
  • Highlight, bookmark, and annotate
  • Full-text search
  • Wi-Fi and iTunes file transfer
  • Passcode lock for files
  • Support for multiple document and archive formats
Features
Read full description

ChmPlus Reader (CHM+) is a feature-rich CHM (Microsoft Compiled HTML Help) document/ebook reader for iPhone/iPad. ChmPlus Reader now supports passcode lock! CHM/EPUB Document Support: • Highlight / bookmark / annotation • Search (find on page & document-wide search) • Open CHM files instantly (even with huge files) • Supports CHM files in different languages • Supports pinch to zoom • Navigate through table of contents • Supports full screen mode • Supports auto rotation and orientation lock • Long press on an image to: 1) save the image to photo album 2) copy the image to clipboard (and paste it into your email) • Night mode (white text on black background) File Management: • Transfer files via Wi-Fi (FTP & HTTP) / iTunes File Sharing • Create/copy/move/rename/delete files and folders • Passcode lock • Support opening document with other applications • Import documents from other applications • Create/edit text documents • Send multiple Email attachments • Create .zip archives • Save image to Photos • Browse and manage remote files (FTP/FTPS, SFTP and WebDAV) Supported File Types: • .chm (Microsoft Compiled HTML Help) • .epub (electronic publication) • MS Office - .doc, .ppt., .xls, .docx, .xlsx, .pptx • iWork '08/'09 (Pages, Numbers, Keynote) • PDF, HTML, RTF, .mht, Safari webarchives and text files • .zip, .rar, .7z, .bz2, .gz, .tar and various other archive file types • High resolution images • Audio and video ==SUPPORT== - https://langui.net/chmplus/

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

Screenshots

ChmPlus Lite4 screens
Text to Speech PDF Reader4 screens

Verdict

The call

The clearest difference is rating: Text to Speech PDF Reader at 4.5 against ChmPlus Lite's 3.6. Text to Speech PDF Reader also leads on ads (none vs shown) and ratings volume (552 vs 11). ChmPlus Lite's advantage is in-app purchases (none vs 10) and iOS requirement (11.0 vs 16.0). On price, review sentiment 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 PDF Reader sells 10 in-app purchases, starting at $0.99 per 7 days. ChmPlus Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Text to Speech PDF Reader holds the better App Store score, 4.5 against 3.6. That said, the two scores are not equally well evidenced: Text to Speech PDF Reader has 552 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 49% of ChmPlus Lite's written reviews are positive against 44% of Text to Speech PDF Reader's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ChmPlus Lite ships an update monthly, Text to Speech PDF Reader every 10 days. The most recent releases landed on August 30, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 3 level
ChmPlus Lite versus Text to Speech PDF Reader: the parameters behind the verdict, then further details
ParameterChmPlus LiteText to Speech PDF Reader
PriceFreeFree
Rating3.6 (11 ratings)4.5 (552 ratings) — better
Positive reviews49.3% of reviews — better44.0% of reviews
Number of ratings11552 — better
Update frequencyMonthlyEvery 10 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS11.0 — better16.0
Further details — not scored
Size13 MB12 MB
Age rating4+4+
Developer兰桂 吴Bret Lester

Customer experience

ChmPlus Lite

All ratings11 ratings
Positive72.7%
Neutral0.0%
Negative27.3%
Written reviews73 reviews
Positive49.3%
Neutral13.7%
Negative37.0%

Text to Speech PDF Reader

All ratings552 ratings
Positive86.1%
Neutral4.0%
Negative10.0%
Written reviews134 reviews
Positive44.0%
Neutral5.2%
Negative50.7%

Bugs and requests

ChmPlus Lite

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

ChmPlus Lite

No 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

Questions

Is ChmPlus Lite free?
ChmPlus Lite is free to download, with no in-app purchases.
Is Text to Speech PDF Reader free?
Text to Speech PDF Reader is free to download, with in-app purchases available.
Which has better reviews, ChmPlus Lite or Text to Speech PDF Reader?
Text to Speech PDF Reader is rated higher. ChmPlus Lite averages 3.6 out of 5 from 11 ratings, while Text to Speech PDF Reader averages 4.5 from 552 ratings.
Do ChmPlus Lite or Text to Speech PDF Reader have ads?
ChmPlus Lite shows ads; Text to Speech PDF Reader does not.
Which is updated more often, ChmPlus Lite or Text to Speech PDF Reader?
ChmPlus Lite ships an update monthly, and Text to Speech PDF Reader every 10 days. Most recently, ChmPlus Lite was updated on August 30, 2026 and Text to Speech PDF Reader on September 23, 2026.

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