Comparison

ChmPlus Lite vs Speech Central

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

Speech Central

This app transforms text from various documents and web pages into speech, offering a distraction-free reading experience. It supports numerous file formats and provides customizable voices, including offline and AI options. Designed for productivity and accessibility, it syncs across Apple devices and offers study tools.

Highlights
  • Optimized PDF & Web Reading
  • Broad Document Support (PDF, EPUB, DOCX)
  • Offline and Cloud AI Voices
  • Cross-device Sync
  • CarPlay & Apple Watch Support
  • Accessibility Profiles
  • Annotation and Export Tools
Features
Read full description

Speech Central has been built for focused, serious reading since 2014. It works across PDFs, web articles, books, and documents. Designed for productivity and accessibility, it combines powerful controls, deep customization, and seamless integration across Apple devices. No subscription. A one-time upgrade unlocks unlimited use. Free access is available for blind users with VoiceOver and for schools deploying the app through Apple School Manager. READING WITHOUT DISTRACTIONS Optimized PDF & Web Reading • Accurate reading order and navigation • Optional cleanup to reduce distractions such as headers, footnotes, citations, and links • RSS support and easy sharing from Safari and other apps Broad Document Support • PDF (including scanned PDFs with two-column layout) • EPUB • Word (.docx) • PowerPoint (.pptx) • OpenOffice formats • HTML, TXT, RTF, Markdown, and more VOICES: OFFLINE AND CLOUD AI • Use high-quality Apple system voices offline • Supports compatible system-wide voices from third-party apps, including offline neural voices from Piper - Neural TTS and ToBe SAID (Pocket TTS) apps • Connect cloud AI voices (OpenAI-compatible APIs, Microsoft Azure, Google Cloud, xAI) using your own API keys • Proprietary enhancement layer improves realism and streaming playback • Optional AI summarization tools help you review content more efficiently BUILT FOR THE APPLE ECOSYSTEM • Sync reading position and playlists across iPhone, iPad, and Mac • CarPlay support for listening and control in your vehicle • Independent Apple Watch app — listen without your iPhone nearby • Optional Health integration to track mindful listening time ACCESSIBILITY FIRST • Dedicated profiles for ADHD, dyslexia, and low vision • Interface and reading behavior adapt for reduced distraction and improved comprehension • Fully accessible with VoiceOver STUDY & KNOWLEDGE TOOLS • Annotate while reading • Export annotated text to .docx • Export text to audio files for offline listening PRIVACY BY DESIGN • No ads • No tracking • No usage analytics WHO USES SPEECH CENTRAL • Students and researchers • Professionals converting reading into listening time • Users who rely on assistive reading tools • Anyone who prefers distraction-reduced, hands-free reading Notes: - Free version limited by the number of daily articles; unlimited access available with Pro upgrade. - Some features require the latest OS version. - License is valid only on iOS/watchOS; separate licenses required for other platforms. - DRM-protected books (e.g. Kindle) are incompatible. - AI features may occasionally perform unexpectedly.

Screenshots

ChmPlus Lite4 screens
Speech Central4 screens

Verdict

The call

The clearest difference is rating: Speech Central at 4.6 against ChmPlus Lite's 3.6. Speech Central also leads on ads (none vs shown) and ratings volume (1.6K vs 11). ChmPlus Lite's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 17.0). On price, monetization model 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. Speech Central sells 1 one-off in-app purchase. ChmPlus Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Speech Central holds the better App Store score, 4.6 against 3.6. That said, the two scores are not equally well evidenced: Speech Central has 1.6K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 49% of ChmPlus Lite's written reviews are positive against 70% of Speech Central's.

UpkeepUpdate frequency

ChmPlus Lite ships an update monthly, Speech Central weekly. The most recent releases landed on August 30, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
ChmPlus Lite versus Speech Central: the parameters behind the verdict, then further details
ParameterChmPlus LiteSpeech Central
PriceFreeFree
Rating3.6 (11 ratings)4.6 (1.6K ratings) — better
Positive reviews49.3% of reviews69.6% of reviews — better
Number of ratings111.6K — better
Update frequencyMonthlyWeekly — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple TV, Apple Watch — better
Requires iOS11.0 — better17.0
Further details — not scored
Size13 MB34 MB
Age rating4+4+
Developer兰桂 吴Labsii

Customer experience

ChmPlus Lite

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

Speech Central

All ratings1,552 ratings
Positive90.3%
Neutral4.3%
Negative5.4%
Written reviews467 reviews
Positive69.6%
Neutral9.4%
Negative21.0%

Bugs and requests

ChmPlus Lite

Not enough reviews yet to summarise bugs or requests.

Speech Central

Reported bugs

6 issues
  • Crashes when changing advanced settings
  • Inconsistent behavior when importing documents
  • Fails to recognize some file formats
  • Playback issues with high-speed mode
  • Repeating chapters unexpectedly
Show 1 more
  • Scrolling issues with long documents

Requested features

8 requests
  • Add more natural-sounding voices
  • Improve chapter/section navigation
  • Allow custom pronunciation of words
  • Add support for more languages
  • Integrate with Bookshare library
Show 3 more
  • Improve PDF formatting and layout
  • Add more customization options
  • Improve sync between devices

In-app purchases

None

ChmPlus Lite

No in-app purchases

1 purchases

Speech Central

One-time1
  • Speech Central Pro$9.99

Questions

Is ChmPlus Lite free?
ChmPlus Lite is free to download, with no in-app purchases.
Is Speech Central free?
Speech Central is free to download, with in-app purchases available.
Which has better reviews, ChmPlus Lite or Speech Central?
Speech Central is rated higher. ChmPlus Lite averages 3.6 out of 5 from 11 ratings, while Speech Central averages 4.6 from 1.6K ratings.
Do ChmPlus Lite or Speech Central have ads?
ChmPlus Lite shows ads; Speech Central does not.
Which is updated more often, ChmPlus Lite or Speech Central?
ChmPlus Lite ships an update monthly, and Speech Central weekly. Most recently, ChmPlus Lite was updated on August 30, 2026 and Speech Central on September 24, 2026.

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