Comparison

AI Writer vs Compress PDF

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

Head to head
About

AI Writer

This AI-powered writing assistant helps you generate various types of text, from essays and emails to creative content and code. It also offers web search, summarization, translation, and grammar correction to enhance your writing and research process.

Highlights
  • AI writing assistant for essays, emails, blogs
  • AI search mode for real-time web answers
  • Summarizer and rewriter for text
  • Translator for multiple languages
  • Creative writing and code generation
  • Grammar and editing tools
  • Idea generator and templates
Features
Read full description

AI Writer is your all-in-one AI writing and chat assistant for essays, emails, blogs, and more. Write, chat, and search the web with advanced AI models that help you create, summarize, translate, and improve text instantly. Built for students, professionals, and creators, AI Writer makes writing faster, easier, and smarter. Key Features • AI Writing Assistant – Generate high-quality essays, emails, blog posts, bios, and more with intelligent tone and grammar suggestions. • AI Search Mode – Get real-time answers and up-to-date information from the web. • Templates and Custom Prompts – Use pre-made writing templates or build your own for any task. • Summarizer and Rewriter – Condense long text or instantly rewrite for clarity and style. • Translator – Translate text between dozens of languages accurately. • Creative Mode – Write stories, poems, scripts, and lyrics with AI inspiration. • Code and Technical Writing – Generate code snippets or simplify technical explanations. • Grammar and Editing Tools – Proofread, fix errors, and improve sentence structure. • Idea Generator – Brainstorm titles, slogans, and social content fast. • Clipboard and History – Save and reuse past prompts and results. Fast, private, and easy to use, AI Writer gives you everything you need to write and research in one place. If you purchase a subscription, your Apple account will be charged. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your App Store account settings. Privacy Policy: mastermindsoftware.co/privacypolicy Terms of Use: mastermindsoftware.co/termsofuse

About

Compress PDF

Features
Read full description

Scan paper to PDF on your iPhone. No account. No cloud. Your documents stay on this device. Point the camera at a page. Offline Scanner detects the edges, straightens the scan, and saves a sharp PDF you can send in WhatsApp, Mail, or Files. Add more pages to the same document, recrop anything that is off, and keep everything on your iPhone and iPad. WHAT YOU CAN DO • Scan with the camera — automatic edge detect and crop • Import from Photos or Files (images and PDFs) • Stack up to 30 pages in one document • Recrop, filters, and add a signature • Save as PDF, JPG, PNG, or DOCX (extracted text you can edit) • Share from the app — scans are not uploaded by us PRIVACY No login. Documents are never sent to our servers. Camera and photo access are used only to capture or import pages. Optional ads help keep the app free. You can remove them with a one-time purchase. The app may send anonymous usage analytics. Your scans are never uploaded. Remove ads is a one-time purchase on your Apple ID. It is not a subscription. Restore it from Settings if you reinstall. Questions: hello@reetinfotech.com

Screenshots

AI Writer4 screens
Compress PDF4 screens

Verdict

The call

The clearest difference is ads: AI Writer at none against Compress PDF's shown. Compress PDF's advantage is update cadence (every 5 days vs every 2 months). On price, in-app purchases, device support and iOS requirement 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. AI Writer sells 7 in-app purchases, starting at $9.99 per 7 days and Compress PDF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AI Writer ships an update every 2 months, Compress PDF every 5 days. The most recent releases landed on October 23, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 8 level
AI Writer versus Compress PDF: the parameters behind the verdict, then further details
ParameterAI WriterCompress PDF
PriceFreeFree
Rating4.7 (1.1K ratings) — better—
Positive reviews61.8% of reviews—
Number of ratings1.1K — better—
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size26 MB34 MB
Age rating4+4+
DeveloperMasterMind Software LLCChaman Sharma

Bugs and requests

AI Writer

Reported bugs

2 issues
  • Login screen freezes
  • Incompatible with older devices

Requested features

2 requests
  • Dark mode option
  • Advanced analytics dashboard

Compress PDF

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

AI Writer

Subscriptions4
  • AI Writer Pro$9.997 Days
  • AI Writer Pro$19.991 Month
  • Secret Discount$39.991 Year
Show 1 more
  • AI Writer Pro3 Days trial$69.991 Year
One-time3
  • 50 AI Credits$4.99
  • 300 AI Credits$19.99
  • 1000 AI Credits$59.99
1 purchases

Compress PDF

One-time1
  • Remove ads$0.99

Questions

Is AI Writer free?
AI Writer is free to download, with in-app purchases available.
Is Compress PDF free?
Compress PDF is free to download, with in-app purchases available.
Do AI Writer or Compress PDF have ads?
Compress PDF shows ads; AI Writer does not.
Which is updated more often, AI Writer or Compress PDF?
AI Writer ships an update every 2 months, and Compress PDF every 5 days. Most recently, AI Writer was updated on October 23, 2026 and Compress PDF on October 14, 2026.

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