Comparison

CHM Sharp vs Chatbox

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

Head to head
About

CHM Sharp

This app is a reader for CHM (Microsoft Compiled HTML Help) documents on iOS devices. It allows for file management, searching within documents, and various viewing options. Transfer files easily via Wi-Fi or iTunes.

Highlights
  • CHM document reader
  • File sorting and searching
  • File management (copy, move, delete)
  • Wi-Fi and iTunes file transfer
  • In-document search and highlighting
  • Pinch-to-zoom support
  • Bookmark functionality
Features
Read full description

CHM Sharp is CHM (Microsoft Compiled HTML Help) document / ebook reader for iPad, iPhone and iPod touch. * Sorting by file name、create time and file size * Search file(folder) name * View, copy, move, delete, rename, email, zip Compression and unzip files/folders * Extract chm files from compressed .zip/.rar file * Glide deleting function * Transferring files by wifi and itunes file sharing * Email multiple files, folder Supported * catalog view/search、index view/search * full-text、title search, Highlight show * auto detect Text encoding * support bookmarks * Supports pinch to zoom * select all and cancel all * open files from other app * Support all orientations * Universal app

About

Chatbox

This application acts as a universal client, connecting you to leading AI models across various devices. It offers features like code assistance, image generation, and smart file understanding, all while prioritizing local data storage for privacy.

Highlights
  • Connect to multiple AI models
  • Analyze documents, images, and code
  • AI-powered code generation and optimization
  • Text-to-image generation
  • Local data storage for privacy
  • Cross-device synchronization
Features
Read full description

Harness the power of the world's most advanced AI models right on your phone! An all-in-one AI client that's ready to use right out of the box — no complex configuration needed. Core Features: - Seamlessly Connect Global AI Models Access ChatGPT, Claude, Gemini, and other leading AI models worldwide. Regardless of which model you prefer, Chatbox lets you integrate them seamlessly. Flexibly configure your own model services, switch freely, and maintain full control — one app for all your AI needs. - Intelligent Document Understanding Upload PDFs, Excel sheets, images, and more. AI instantly extracts, analyzes, and summarizes your content with precision. Whether it's reading research papers, reviewing contracts, analyzing reports, or identifying objects in images — complex documents become easy to work with. - Real-Time Web Search Built-in web search capability enables AI to access breaking news, trending information, market data, and academic insights in real time. Say goodbye to outdated training data and get the latest, most accurate answers. Track technology trends, get current news commentary, or access real-time data — all with a single question. - Powerful Complex Format Rendering Support for HTML web previews, LaTeX mathematical formulas, and Markdown rich text. Whether it's AI-generated interactive pages, complex scientific formulas, structured notes, or code snippets — everything is rendered with professional-grade precision instantly. - AI Image Generation Powerful image generation at your fingertips. Describe what you want, and instantly create high-quality illustrations, design sketches, and creative posters. Spark inspiration, accelerate creation, and bring every idea to life. What Chatbox can help you: - Students & Researchers → Read papers, write formulas, render LaTeX, search literature in real time — academic productivity on steroids - Professionals → Analyze documents, generate reports, track industry trends — your second brain at work - Creative Minds → Brainstorm ideas, generate images, refine copy, leverage trending topics — endless inspiration - AI Enthusiasts → Experience multiple models in one place, explore AI frontiers with ease Our Privacy Commitment: We prioritize your data security above all else. All your information and conversation history are securely stored locally on your device by default, ensuring you maintain complete control over your privacy.

Screenshots

CHM Sharp3 screens
Chatbox4 screens

Verdict

The call

The clearest difference is rating: Chatbox at 4.6 against CHM Sharp's 3.8. Chatbox also leads on in-app purchases (none vs 1) and ads (none vs shown). CHM Sharp's advantage is iOS requirement (14.0 vs 16.0). On price 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. CHM Sharp sells 1 one-off in-app purchase. Chatbox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Chatbox holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: Chatbox has 632 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 67% of CHM Sharp's written reviews are positive against 78% of Chatbox's.

UpkeepUpdate frequency

CHM Sharp ships an update every 4 months, Chatbox weekly. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

Scorecard8 real differences · 2 level
CHM Sharp versus Chatbox: the parameters behind the verdict, then further details
ParameterCHM SharpChatbox
PriceFreeFree
Rating3.8 (11 ratings)4.6 (632 ratings) — better
Positive reviews67.3% of reviews77.8% of reviews — better
Number of ratings11632 — better
Update frequencyEvery 4 monthsWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.0
Further details — not scored
Size25 MB48 MB
Age rating4+17+
Developer锦文 游Mediocre Apps

Customer experience

CHM Sharp

All ratings11 ratings
Positive72.7%
Neutral0.0%
Negative27.3%
Written reviews55 reviews
Positive67.3%
Neutral12.7%
Negative20.0%

Chatbox

All ratings632 ratings
Positive90.3%
Neutral3.0%
Negative6.6%
Written reviews288 reviews
Positive77.8%
Neutral10.8%
Negative11.5%

Bugs and requests

CHM Sharp

Not enough reviews yet to summarise bugs or requests.

Chatbox

Reported bugs

4 issues
  • Cannot select Ollama models
  • Custom API URL connections failing
  • Live scrolling issues during streaming
  • Proxy settings not working on mobile

Requested features

4 requests
  • Add support for local Ollama models
  • Improve organization features (folders, projects, etc.)
  • Implement iCloud syncing
  • Add Chinese language support

In-app purchases

1 purchases

CHM Sharp

One-time1
  • Full Version$0.99
None

Chatbox

No in-app purchases

Questions

Is CHM Sharp free?
CHM Sharp is free to download, with in-app purchases available.
Is Chatbox free?
Chatbox is free to download, with no in-app purchases.
Which has better reviews, CHM Sharp or Chatbox?
Chatbox is rated higher. CHM Sharp averages 3.8 out of 5 from 11 ratings, while Chatbox averages 4.6 from 632 ratings.
Do CHM Sharp or Chatbox have ads?
CHM Sharp shows ads; Chatbox does not.
Which is updated more often, CHM Sharp or Chatbox?
CHM Sharp ships an update every 4 months, and Chatbox weekly. Most recently, CHM Sharp was updated on October 17, 2026 and Chatbox on October 18, 2026.

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