Comparison

Aspect Ratio Pro vs PDF Scan

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

Head to head
About

Aspect Ratio Pro

This app helps you quickly solve for an unknown value in a proportion. Simply input three known numbers, and it will calculate the fourth, making ratio and proportion calculations effortless.

Highlights
  • Rule of three calculations
  • Instant fourth value calculation
  • Ratio and proportion solver
  • Intuitive input interface
  • Supports iPhone and Mac
Read full description

Your new rule-of-three sidekick. Enter three values, and the app instantly finds the fourth. Perfect for calculating ratios and proportions when one value is missing. ⁂ Support If you need help or want to make a feature suggestion, I’d love hearing from you → https://appahead.studio/help/ Feedback Enjoying Aspect Ratio Pro? I’d love your support with a kind review on the App Store. About I’m Martin — designer, developer, and founder of App ahead. Since 2015, I’ve been creating ambitious apps for Apple devices, driven by a strong vision and thoughtful, forward-thinking design. Terms of Use: https://appahead.studio/terms Privacy Policy: https://appahead.studio/privacy

About

PDF Scan

This app transforms your iPhone into a powerful document scanner. Quickly capture and digitize documents, receipts, and business cards, creating high-quality PDF files. Organize, manage, and share your scans with ease, with advanced features available via subscription.

Highlights
  • Scan documents instantly
  • Automatic edge detection and cropping
  • High-quality PDF creation
  • Multi-page scanning
  • Document management tools
  • Share and export scans
Features
Read full description

PDF Scan – Scanner & Reader turns your iPhone into a fast, private document scanner for everyday paperwork. Scan receipts, invoices, contracts, notes, IDs, forms, books, whiteboards and business cards in seconds, then save clean PDF files or image exports from one simple app. Built for real work Use PDF Scan when you need a portable scanner at home, in the office, on the road, at school or while traveling. Capture a page, review the result, organize it into a project and export it when you are ready. The app is designed for people who want a scanner that is quick, clear and practical without forcing an account or sending private documents through a cloud service. Clean scans from your camera Smart edge detection helps frame the page automatically. Perspective correction straightens angled shots, and automatic image enhancement adjusts shadows, contrast and sharpness so documents are easier to read. Use it for paper forms, printed letters, handwritten notes, receipts, class handouts, meeting documents and signed pages. PDF tools in one place Create multi-page PDFs, reorder pages, save projects, export smaller or higher quality PDF files, and share documents through the standard iOS share sheet. You can also save pages as images, keep original images when needed, add a watermark, sign a document and place the signature on the page. For sensitive files, use PDF lock tools to help protect a document with a password before sharing. Text recognition and smart tools OCR text recognition helps pull editable and searchable text from scans, so you can copy, review and share the words inside a document instead of retyping everything. Business card scanning can recognize contact details and help save them to Contacts. Receipt and invoice tools can extract useful fields and export line items as CSV for expense tracking. Organize paperwork without a mess Keep different scans in separate projects: tax documents, school notes, rental papers, travel receipts, work contracts, medical forms, invoices, business cards, warranties and signed agreements. A project-based library makes it easier to find what you scanned, add more pages later and export the right file when someone asks for it. Privacy-first scanning PDF Scan is built around five practical privacy promises: Offline: core scanning, organizing, OCR, PDF creation and export workflows can be used without depending on a web account. No Login: open the app and scan; no sign-up, no user profile and no password just to manage your own documents. Privacy First: receipts, IDs, contracts, signatures, business cards and personal notes are treated as private files. On Device: document capture, image processing, OCR, PDF generation, signatures and exports are handled on your device. No Cloud Upload: PDF Scan does not upload your scans, recognized text, contacts, receipts, signatures or projects to its own cloud. For students, freelancers, small business owners, travelers, teachers, parents and anyone with paper to manage, PDF Scan keeps the workflow simple: scan, review, recognize, sign, convert and share. Some advanced tools and unlimited access may require an active subscription, clearly shown before purchase. Privacy Policy https://5gotogo.github.io/PDFScan-privacy/privacy-policy.html Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Aspect Ratio Pro3 screens
PDF Scan4 screens

Verdict

The call

The clearest difference is price: PDF Scan at Free against Aspect Ratio Pro's $3.99. PDF Scan also leads on rating (5.0 vs 4.0) and ratings volume (3 vs 1). Aspect Ratio Pro's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 2 months). On review sentiment, ads 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

PDF Scan is free to download; Aspect Ratio Pro costs $3.99 up front. PDF Scan sells 2 in-app purchases, starting at $4.99 per month. Aspect Ratio Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PDF Scan holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Aspect Ratio Pro ships an update every 3 weeks, PDF Scan every 2 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

Scorecard7 real differences · 3 level
Aspect Ratio Pro versus PDF Scan: the parameters behind the verdict, then further details
ParameterAspect Ratio ProPDF Scan
Price$3.99Free — better
Rating4.0 (1 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings13 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, Mac — betteriPhone
Requires iOS18.616.6 — better
Further details — not scored
Size42 MB3 MB
Age rating4+4+
DeveloperApp ahead GmbH家宝 戴

Customer experience

Aspect Ratio Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PDF Scan

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Aspect Ratio Pro

No in-app purchases

2 purchases

PDF Scan

Subscriptions2
  • PDFScan Pro Monthly3 Days trial$4.991 Month
  • PDFScan Pro Yearly3 Days trial$39.991 Year

Questions

Is Aspect Ratio Pro free?
Aspect Ratio Pro costs $3.99, with no in-app purchases.
Is PDF Scan free?
PDF Scan is free to download, with in-app purchases available.
Which has better reviews, Aspect Ratio Pro or PDF Scan?
PDF Scan is rated higher. Aspect Ratio Pro averages 4.0 out of 5 from 1 ratings, while PDF Scan averages 5.0 from 3 ratings.
Do Aspect Ratio Pro or PDF Scan have ads?
Neither Aspect Ratio Pro nor PDF Scan shows ads.
Which is updated more often, Aspect Ratio Pro or PDF Scan?
Aspect Ratio Pro ships an update every 3 weeks, and PDF Scan every 2 months. Most recently, Aspect Ratio Pro was updated on October 15, 2026 and PDF Scan on September 30, 2026.

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