Comparison

PDF Maker vs ChatCharm Keyboard

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

Head to head
About

PDF Maker

Easily convert various file types to high-quality PDFs, compress large documents, and secure sensitive files with password encryption. This powerful toolkit is designed for work, study, and everyday office tasks, offering fast processing and a user-friendly interface.

Highlights
  • Convert documents, photos, and spreadsheets to PDF
  • Convert PDF to Word, images, and text
  • Compress PDF files while maintaining quality
  • Protect documents with password encryption
  • Sign PDF files with handwritten or digital signatures
  • Fast file sharing and export
Features
Read full description

Convert documents, photos, spreadsheets, presentations, and more into high-quality PDF files in just seconds. Convert PDFs to other formats, compress large files, protect important documents, and manage everything within a powerful application. Perfect for work, study, business, and everyday office work. Main Features • Convert Word, Excel, PPT, TXT, JPG, PNG, and other formats to PDF via photo albums, system files, other apps, and URLs. • Convert PDF to Word, image, and text formats. • Compress PDF files while maintaining quality. • Protect private documents with password encryption. • Fast file sharing and export. • Easy-to-use interface with fast processing speed. • Supports business, study, and daily office needs. • Sign PDF files quickly with handwritten or digital signatures. • Create, save, and reuse signatures for contracts, forms, invoices, and important documents. Why Choose Us • Fast and stable conversion. • High-quality PDF output. • Clean and concise design. • Powerful all-in-one PDF toolkit. • Save storage space with intelligent compression. • Ensure your files are safe and private. Whether you need to create, convert, compress, or protect PDF files, this app meets all your needs. -Payment will be charged to iTunes Account at confirmation of purchase. -Subscriptions automatically renew 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, and identify the cost of the renewal. Privacy Policy: http://paspott.com/pdf01/privacy.html Terms of User: http://paspott.com/pdf01/terms.html

About

ChatCharm Keyboard

Enhance your writing with an AI-powered keyboard that assists with replies, rewrites, and proofreading. Communicate effortlessly across languages and manage text snippets efficiently for faster typing.

Highlights
  • AI-generated replies
  • Tone and style improvement
  • Real-time grammar and spelling check
  • Seamless translation
  • Clipboard management
  • Quick phrase shortcuts
Features
Read full description

ChatCharm Keyboard is your all-in-one AI typing assistant designed to improve how you write, reply, and communicate. Whether you're chatting, working, or writing content, ChatCharm helps you express yourself effortlessly. Key Features: • AI Reply – generate natural responses instantly • AI Rewrite – improve tone, clarity, and style • AI Proofread – fix grammar and spelling in real time • Translation – communicate across languages seamlessly • Clipboard Manager – save and reuse frequently used text • Quick Phrases – speed up repetitive typing tasks From casual chats to professional communication, ChatCharm helps you always say the right thing. https://sites.google.com/view/chatcharmkeyboardtermsofuse/%E9%A6%96%E9%A1%B5 https://sites.google.com/view/privacy-policy-for-chatcharm-k/%E9%A6%96%E9%A1%B5 duyulong84@gmail.com

Screenshots

PDF Maker4 screens
ChatCharm Keyboard4 screens

Verdict

The call

The clearest difference is review sentiment: PDF Maker at 67% against ChatCharm Keyboard's 0%. PDF Maker also leads on rating (4.5 vs 2.2) and ads (none vs shown). ChatCharm Keyboard's advantage is update cadence (weekly vs every 3 weeks). On price, ratings volume, in-app purchases and monetization model 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. PDF Maker sells 5 in-app purchases, starting at $9.99 per 7 days and ChatCharm Keyboard sells 2 in-app purchases, starting at $19.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDF Maker holds the better App Store score, 4.5 against 2.2. Both are backed by a comparable volume of ratings — 99 and 47 respectively. Written reviews point the same way: 67% of PDF Maker's written reviews are positive against 0% of ChatCharm Keyboard's.

UpkeepUpdate frequency

PDF Maker ships an update every 3 weeks, ChatCharm Keyboard weekly. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
PDF Maker versus ChatCharm Keyboard: the parameters behind the verdict, then further details
ParameterPDF MakerChatCharm Keyboard
PriceFreeFree
Rating4.5 (99 ratings) — better2.2 (47 ratings)
Positive reviews66.7% of reviews — better0.0% of reviews
Number of ratings99 — better47
Update frequencyEvery 3 weeksWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15 — better15.6
Further details — not scored
Size87 MB99 MB
Age rating4+4+
Developer泽裕 王亚雯 雷

Customer experience

PDF Maker

All ratings99 ratings
Positive86.9%
Neutral3.0%
Negative10.1%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

ChatCharm Keyboard

All ratings46 ratings
Positive32.6%
Neutral0.0%
Negative67.4%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

5 purchases

PDF Maker

Subscriptions5
  • WeekMember$9.997 Days
  • WeekMember3 Days trial$19.997 Days
  • WeekMemberPro$19.997 Days
Show 2 more
  • MonthMember$34.991 Month
  • MonthMember$39.991 Month
2 purchases

ChatCharm Keyboard

Subscriptions2
  • Weekly3 Days trial$19.997 Days
  • Yearly$89.991 Year

Questions

Is PDF Maker free?
PDF Maker is free to download, with in-app purchases available.
Is ChatCharm Keyboard free?
ChatCharm Keyboard is free to download, with in-app purchases available.
Which has better reviews, PDF Maker or ChatCharm Keyboard?
PDF Maker is rated higher. PDF Maker averages 4.5 out of 5 from 99 ratings, while ChatCharm Keyboard averages 2.2 from 47 ratings.
Do PDF Maker or ChatCharm Keyboard have ads?
ChatCharm Keyboard shows ads; PDF Maker does not.
Which is updated more often, PDF Maker or ChatCharm Keyboard?
PDF Maker ships an update every 3 weeks, and ChatCharm Keyboard weekly. Most recently, PDF Maker was updated on October 24, 2026 and ChatCharm Keyboard on October 24, 2026.

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