Comparison

PDF Compare & AI Detector vs Diff Checker

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

Head to head
About

PDF Compare & AI Detector

Quickly identify discrepancies between documents and text files. Features synced scrolling, color-coded changes, and a similarity score to streamline reviews of contracts, reports, and AI-generated content. Offers detailed PDF analysis and report generation.

Highlights
  • Fast text/PDF comparison
  • Color-highlight additions & deletions
  • Similarity score (percentage)
  • PDF analysis: metadata, content, style
  • Detect missing text layers and scanned PDFs
  • Generate and share PDF analysis report
Features
Read full description

Your helper for working with AI, LLMs, and digital documents. Compare PDFs, Word, DOCX and text files, analyze documents, inspect PDF metadata, check formatting issues, and review AI-related signals before you share, submit or sign. Useful tools to compare, inspect, validate, and review content with confidence. COMPARE PDF, WORD, DOCX & TEXT • Highlight document differences • Check similarity score • Compare images in PDFs • Review changes side by side • Find added, removed and changed content AI SIGNALS / AI DETECTOR REVIEW • Check offline AI/Bot signal score • Review metadata and document properties • Detect unusual document patterns • See triggered signals with explanations The AI Signal Score does not determine whether content was created by AI. It highlights document signals that may require review. STYLE & FORMAT CHECKER • Detect formatting inconsistencies • Identify print cut and page edge risks • Check margins, spacing and text placement • Find long lines and readability issues • Detect excessive blank lines and empty pages PDF SECURITY INSPECTOR • View PDF metadata • Scan PDFs for hidden content • Detect tiny, invisible or unreadable text • Review suspicious links and embedded actions • Check PDF restrictions and permissions • Inspect forms, annotations and signature fields PDF REPORT EXPORT • Export a professional PDF report • Share document analysis results easily • Include AI signals, formatting issues and security findings • Add metadata summaries and key insights • Create reports for audits, reviews and documentation WORKS OFFLINE Document analysis runs offline on your device for enhanced privacy. Results are informational and may be incomplete or inaccurate. The app does not provide legal, forensic, cybersecurity or digital signature validation. USEFUL FOR • Contracts • Reports • Academic papers • Invoices • Resumes and CVs • Technical documents • Legal drafts • AI-generated drafts • Business documents • Before and after document versions PRO FEATURES: Some advanced features may require Pro access, including full PDF analysis, advanced comparison tools, larger document limits, detailed reports and premium document review features. PDF Compare & Analyzer is built for users who need more than a simple PDF viewer. Compare changes, inspect document structure, check metadata, review AI-related signals and analyze files with more confidence. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tagaev.xyz/pdftextcompate-pp.html Support: info@tagaev.xyz

About

Diff Checker

Read full description

Easily figure out the differences between two pieces of text with Diff Checker - Compare Text, your go-to tool for accurate text comparison on iPhone & iPad. Whether you’re a writer, coder, editor, or student, this app helps you to identify even the smallest difference between two text paragraphs. Simply paste or import your content into two boxes and click on the Compare button to see the difference. *Key Features - Instant Comparison: Paste or import text in two boxes to see exactly what’s changed. - Highlighted Differences: Modified paragraphs and words are clearly highlighted for easy understanding. - Import Support: Quickly bring in text files or documents from your device. - Precise and Fast: Detects even minor edits, extra spaces, or punctuation changes. You can use the app for the following scenarios. *Code comparison:- App now supports code comparison which means, you can easily identify difference between two different codes. *Text to text comparison:- Compare two texts and find the diff between text using this tool. *Compare string:- Text comparison tool for comparing difference between strings. Perfect for proofreading, version tracking, or verifying edits — Diff Checker - Compare Text makes comparison simple, visual, and efficient. NB: After free trial period, active subscription is required to access the app features fully. Privacy Policy:- https://edusoft.co.nz/diffonline-privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PDF Compare & AI Detector4 screens
Diff Checker4 screens

Verdict

The call

The clearest difference is iOS requirement: Diff Checker at 13.0 against PDF Compare & AI Detector's 17.6. On price, update cadence, ads and in-app purchases 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 Compare & AI Detector sells 3 in-app purchases, starting at $1.99 per 7 days and Diff Checker sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PDF Compare & AI Detector ships an update every 3 weeks, Diff Checker fortnightly. The most recent releases landed on September 20, 2026 and May 16, 2026 respectively.

Scorecard1 real difference · 9 level
PDF Compare & AI Detector versus Diff Checker: the parameters behind the verdict, then further details
ParameterPDF Compare & AI DetectorDiff Checker
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, MaciPhone, iPad, iPod, Mac — better
Requires iOS17.613.0 — better
Further details — not scored
Size23 MB79 MB
Age rating12+4+
DeveloperMarsel TagaevEdusoft Limited

In-app purchases

3 purchases

PDF Compare & AI Detector

Subscriptions3
  • Weekly PRO Subscription3 Days trial$1.997 Days
  • Monthly PRO Subscription3 Days trial$3.991 Month
  • Annual PRO Subscription$19.991 Year
2 purchases

Diff Checker

Subscriptions2
  • Premium Subscription Monthly3 Days trial$7.991 Month
  • Premium Subscription Yearly3 Days trial$49.991 Year

Questions

Is PDF Compare & AI Detector free?
PDF Compare & AI Detector is free to download, with in-app purchases available.
Is Diff Checker free?
Diff Checker is free to download, with in-app purchases available.
Do PDF Compare & AI Detector or Diff Checker have ads?
Neither PDF Compare & AI Detector nor Diff Checker shows ads.
Which is updated more often, PDF Compare & AI Detector or Diff Checker?
PDF Compare & AI Detector ships an update every 3 weeks, and Diff Checker fortnightly. Most recently, PDF Compare & AI Detector was updated on September 20, 2026 and Diff Checker on May 16, 2026.

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