Comparison

Door Knock vs QR Scanner

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

Head to head
About

Door Knock

Features
Read full description

Take your neighborhood domination to the next level with DOORKNOCK PRO! Our powerful platform equips you with the tools and strategies needed to assert your presence and achieve unrivaled success in door-to-door sales.

About

QR Scanner

This utility app allows users to quickly scan QR codes and barcodes, view scan history, and create custom QR codes for various information like links, text, and Wi-Fi. It offers a simple interface for managing and sharing generated codes.

Highlights
  • Scan QR codes and barcodes
  • Create custom QR codes
  • Save scan history
  • Share and export codes
  • User-friendly interface
Read full description

Scan everyday codes. Compare product prices. Keep your verification codes and passwords together. QR Scanner: 2FA & Passwords brings QR code scanning, barcode tools, and a personal Vault into one convenient app. Scan product barcodes to explore available prices, create QR codes for sharing, or scan an account's setup QR code to add two-factor authentication. SCAN QR CODES & BARCODES Use your camera or choose an image from Photos to scan QR codes and common barcodes. Open links, read information, and save useful results for later. COMPARE PRODUCT PRICES Scan supported product barcodes to view product details and compare available prices. Results and availability vary by product and retailer. SCAN MORE AT ONCE Capture multiple codes in one batch and keep your results together. CREATE & SHARE QR CODES Create QR codes for websites, text, Wi-Fi networks, contact details, and more. Save or share your codes in just a few taps. FIND YOUR PAST SCANS Keep a history of scanned results so you can return to useful links and product information. MANAGE VERIFICATION CODES Scan a setup QR code or enter a secret key to add a compatible two-factor authentication account. View time-based verification codes in Vault and copy them when you need to sign in. KEEP PASSWORDS ORGANIZED Store account names, usernames, and passwords in Vault. Search your saved entries and copy details when you need them. CHECK PASSWORD SECURITY Check saved passwords against known data breaches to help identify passwords you may want to change. PROTECT YOUR VAULT Vault entries are stored locally, with no cloud sync. Enable optional Face ID for access protection. Import and export your accounts locally, with encrypted backup options for passwords. REVIEW PRODUCT CHECKS Access photo-based product check reports to help inform your shopping decisions. PREMIUM ACCESS An active subscription is required to view scan results and add verification-code accounts or passwords. Premium access is available through weekly and yearly auto-renewable subscriptions. SUBSCRIPTION INFORMATION • Weekly subscription: Eligible subscribers can receive the first week for US$0.29, then US$19.99 per week. • Yearly subscription: US$34.99 per year. Prices above are for the U.S. storefront. Prices and offer eligibility may vary by region. The applicable price and terms are shown before purchase. Payment is charged to your Apple Account when you confirm your purchase. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Your account will be charged for renewal within 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account subscription settings. Privacy Policy https://sites.google.com/view/qr-code-scanner-codeblink Terms of Use https://sites.google.com/view/qr-code-scanner-codeblink-term

Screenshots

Door Knock4 screens
QR Scanner4 screens

Verdict

The call

The clearest difference is in-app purchases: Door Knock at none against QR Scanner's 10. QR Scanner's advantage is update cadence (every 6 days vs every 3 weeks). On price, ads, 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. QR Scanner sells 10 in-app purchases, starting at $9.99 per 7 days. Door Knock asks for nothing beyond the download.

UpkeepUpdate frequency

Door Knock ships an update every 3 weeks, QR Scanner every 6 days. The most recent releases landed on October 20, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 8 level
Door Knock versus QR Scanner: the parameters behind the verdict, then further details
ParameterDoor KnockQR Scanner
PriceFreeFree
Rating—4.3 (41 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—41 — better
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.016
Further details — not scored
Size88 MB64 MB
Age rating17+4+
DeveloperSECURAS恩来 牛

In-app purchases

None

Door Knock

No in-app purchases

10 purchases

QR Scanner

Subscriptions10
  • qrcode 1 Week Pro$9.997 Days
  • qrcode 1 Week Pro7 Days trial$9.997 Days
  • qrcode 1 Week Pro3 Days trial$9.997 Days
Show 7 more
  • qrcode 1 Week Plus$12.997 Days
  • qrcode 1 Week VIP$14.997 Days
  • qrcode 1 Week Pro3 Days trial$19.997 Days
  • qrcode 1 Week Pro7 Days trial$19.997 Days
  • qrcode 1 Year Pro$29.991 Year
  • qrcode 1 Year Pro$34.991 Year
  • qrcode 1 Year Pro$59.991 Year

Questions

Is Door Knock free?
Door Knock is free to download, with no in-app purchases.
Is QR Scanner free?
QR Scanner is free to download, with in-app purchases available.
Do Door Knock or QR Scanner have ads?
Neither Door Knock nor QR Scanner shows ads.
Which is updated more often, Door Knock or QR Scanner?
Door Knock ships an update every 3 weeks, and QR Scanner every 6 days. Most recently, Door Knock was updated on October 20, 2026 and QR Scanner on October 29, 2026.

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