Comparison

PDF OCR vs ScanBig

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

Head to head
About

PDF OCR

This app offers a comprehensive suite of tools for managing PDF files. It allows you to extract text using OCR, convert PDFs to images, secure documents with passwords, and merge or split files. It also enables creating PDFs from images and converting webpages into PDF format, all while ensuring your data remains private through offline processing.

Highlights
  • Extract text with OCR
  • Convert PDF to images
  • Secure PDFs with passwords
  • Merge or split PDFs
  • Create PDFs from images
  • Convert webpages to PDF
  • Compress file size
Features
Read full description

PDF OCR turns your iPhone and iPad into a complete PDF workspace: scan paper into searchable PDFs, read and mark up any PDF, and fix files with a full set of tools. Everything runs on your device. SCAN TO PDF • Point the camera at a page; edges are found and the page is straightened for you • Scan many pages in one go, then reorder, rotate or remove them • Text is recognized automatically, so scans are searchable and selectable • Reads QR codes and puts both sides of an ID card on one page READ AND MARK UP • Pen, highlighter, text highlight, underline and strikethrough • Notes, shapes, arrows, stamps and your saved signature • Select anything you added to move or resize it • Reorder, rotate, insert and delete pages • Search, contents and bookmarks, night mode and read aloud ALL YOUR PDF TOOLS • Recognize text (OCR) in scanned PDFs • Make files smaller • Merge PDFs and images, split by pages, ranges or every N pages • Convert PDF to images, text and RTF, and web pages to PDF • Add or remove passwords and permissions PRIVATE BY DESIGN Your documents never leave your device. Scanning, text recognition and summaries run on the device, with no account. PDF OCR PRO Pro adds OCR without page limits, advanced split, redaction that removes content for good, watermarks and page numbers, Face ID lock, smart file names for scans, on-device summaries and translation, and Shortcuts actions. Choose monthly, yearly (with a 7-day free trial) or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed in Settings › Apple Account › Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://layerz.app/pdfocr/privacy

About

ScanBig

This app helps you reclaim storage space by identifying and managing large media files like photos and videos. It offers smart scanning, quick deletion, and iCloud integration to efficiently clean up your device.

Highlights
  • Smart scanning for large files
  • Supports photos and videos
  • Quick deletion of unwanted files
  • iCloud integration
  • Multilingual support
Features
Read full description

Large Media Finder Easily manage and clean up large files on your device for more efficient storage! Large Media Finder is a powerful tool designed to help you identify and manage large files, such as photos and videos, on your device. With its intelligent scanning feature, you can quickly locate the files taking up the most space and manage them with ease. Key Features: • Smart Scanning: Quickly scan your device to find the largest files, and view detailed information such as file size, type, and date. • Supports Various File Types: Manage common media files like photos and videos effortlessly. • Quick Deletion: Easily delete unnecessary large files to free up storage space. • iCloud Integration: Access, view, and manage files stored in iCloud seamlessly. • Multilingual Support: Available in English and Simplified Chinese to cater to a global audience. Who Is It For?: • Users running out of storage space. • Those who regularly organize their photos and videos. • Anyone looking to quickly find and remove large files. Download Large Media Finder now and give your device storage a fresh start!

Screenshots

PDF OCR4 screens
ScanBig4 screens

Verdict

The call

The clearest difference is rating: ScanBig at 5.0 against PDF OCR's 4.4. ScanBig also leads on iOS requirement (15.6 vs 17.0). PDF OCR's advantage is in-app purchases (none vs 1) and ratings volume (7 vs 1). On price, update cadence, 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

Both are free to download. ScanBig sells 1 one-off in-app purchase. PDF OCR asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ScanBig holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: PDF OCR has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

PDF OCR ships an update every 3 weeks, ScanBig fortnightly. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 4 level
PDF OCR versus ScanBig: the parameters behind the verdict, then further details
ParameterPDF OCRScanBig
PriceFreeFree
Rating4.4 (7 ratings)5.0 (1 ratings) — better
Number of ratings7 — better1
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.6 — better
Further details — not scored
Size7 MB28 MB
Age rating17+4+
DeveloperLayerz Corp.杭州引力网络技术有限公司

Customer experience

PDF OCR

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%

ScanBig

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

PDF OCR

No in-app purchases

1 purchases

ScanBig

One-time1
  • ScanBig VIP$3.99

Questions

Is PDF OCR free?
PDF OCR is free to download, with no in-app purchases.
Is ScanBig free?
ScanBig is free to download, with in-app purchases available.
Which has better reviews, PDF OCR or ScanBig?
ScanBig is rated higher. PDF OCR averages 4.4 out of 5 from 7 ratings, while ScanBig averages 5.0 from 1 ratings.
Do PDF OCR or ScanBig have ads?
Neither PDF OCR nor ScanBig shows ads.
Which is updated more often, PDF OCR or ScanBig?
PDF OCR ships an update every 3 weeks, and ScanBig fortnightly. Most recently, PDF OCR was updated on October 17, 2026 and ScanBig on October 16, 2026.

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