Comparison

CIDR vs PDF Scanner · OCR Docs

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

Head to head
About

CIDR

This utility calculates IP address ranges from an IP address and subnet mask. It supports IPv4 calculations, including prefix display, address range counts, and bit notation. Useful for quick CIDR notation checks and subnet mask conversions.

Highlights
  • IP address range calculation
  • Subnet mask to CIDR conversion
  • IPv4 prefix display
  • Number of address ranges
  • Bit notation display
  • Quick reference table
Features
Read full description

Calculate the IP address range from the IP address and subnet mask. It can be used to calculate IPv4 addresses, including prefix display, number of address ranges, and bit notation. CIDR calculation, when you want to check CIDR notation quickly. To convert subnet mask to CIDR notation. It can also be used as a quick reference table for subnet masks. Bit notation is also available, so it is suitable for learning IPv4.

About

PDF Scanner · OCR Docs

Features
Read full description

Digitize Paper Documents the Smart Way Sound familiar? • Receipts piling up and stuffing your wallet • Can't remember where you stored that contract • Business cards multiplying beyond control • Handwritten notes going missing • Regretting throwing away instruction manuals Say goodbye to paper clutter. Receipts, contracts, business cards, handwritten notes— access all your important documents anytime, anywhere on your phone. Join countless users who rely on our scanner app to solve their document organization challenges. 【Why Choose Us】 1. High-Precision Scanning Automatic edge detection for accurate scans. Auto-correction for tilted shots, with shadow and blemish reduction. 2. Effortless Operation Just 3 steps: capture, edit, save. Intuitive enough for first-time users. 3. Powerful Image Editing Adjust brightness, crop, and rotate. Enhance text clarity for easy reading. 4. Multi-Page Management Combine multiple pages into a single document. Rearrange page order with ease. 5. PDF Conversion & Sharing Convert to PDF with a single tap. Share via email or any app instantly. 6. Security Features Face ID / Touch ID supported. Keep your important documents safe. 7. Data Protection Export and backup options available. Peace of mind when switching devices. 【Customization】 • Dark Mode support • 12 theme colors to choose from • 10 languages supported Japanese, English, Chinese (Simplified & Traditional), Korean Spanish, Portuguese, Arabic French, German • Adjustable list view size 【Use Cases】 Business • Expense receipt management • Store contracts and quotes • Business card organization • Meeting notes archive Personal • Save warranties and manuals • Manage kids' school handouts • Digitize recipes • Keep travel documents handy Students • Save notebooks and textbooks • Organize class handouts • Capture whiteboard notes 【Premium Plan】 • Ad-free experience • Unlimited export and import Download now and start managing your documents the smart way.

Screenshots

CIDR4 screens
PDF Scanner · OCR Docs4 screens

Verdict

The call

The clearest difference is ads: CIDR at none against PDF Scanner · OCR Docs's shown. PDF Scanner · OCR Docs's advantage is update cadence (every 3 days vs every 3 weeks). 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. CIDR sells 1 one-off in-app purchase and PDF Scanner · OCR Docs sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CIDR ships an update every 3 weeks, PDF Scanner · OCR Docs every 3 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 7 level
CIDR versus PDF Scanner · OCR Docs: the parameters behind the verdict, then further details
ParameterCIDRPDF Scanner · OCR Docs
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size23 MB94 MB
Age rating4+4+
Developerakira ohmachiUPDEITO INC.

In-app purchases

1 purchases

CIDR

One-time1
  • Remove Ads$1.99
1 purchases

PDF Scanner · OCR Docs

One-time1
  • Hide ads$12.99

Questions

Is CIDR free?
CIDR is free to download, with in-app purchases available.
Is PDF Scanner · OCR Docs free?
PDF Scanner · OCR Docs is free to download, with in-app purchases available.
Do CIDR or PDF Scanner · OCR Docs have ads?
PDF Scanner · OCR Docs shows ads; CIDR does not.
Which is updated more often, CIDR or PDF Scanner · OCR Docs?
CIDR ships an update every 3 weeks, and PDF Scanner · OCR Docs every 3 days. Most recently, CIDR was updated on October 2, 2026 and PDF Scanner · OCR Docs on October 7, 2026.

Other comparisons