Comparison

Big QR Reader vs SubGuard

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

Head to head
About

Big QR Reader

Easily scan and decode various QR codes and barcodes, including contact info, URLs, Wi-Fi credentials, and product details. It supports scanning from your gallery and in low-light conditions, with all scan history saved for quick access.

Highlights
  • Reads all QR & barcode formats
  • Saves scan history
  • Scans from gallery
  • Flashlight for dark environments
  • Offline scanning
  • Scans promotion and coupon codes
Features
Read full description

Big QR Reader can read and decode all kinds of QR code and barcode, including contacts, products, URL, Wi-Fi, text, books, E-mail, location, calendar, etc. You can also use it to scan promotion and coupon codes in shops to get discounts. Why choose Big QR Reader? √ Support all QR & barcode formats √ All scan history will be saved √ Scan QR / barcodes from gallery √ Use flashlight to scan in dark environment √ No internet connection required √ Scan promotion and coupon codes √ Privacy safe. Only camera permission required How to use 1. Point camera to the QR code/barcode 2. Auto recognize, scan and decode 3. Get results and relevant options Privacy Policy: https://app.penbob.top/Privacy.html Terms of Use: https://app.penbob.top/Service.html

About

SubGuard

This utility app offers lightning-fast QR and barcode scanning with AI-powered identification for plants, animals, and more. Its lightweight design and intuitive interface make it easy to use for everyday tasks, from checking prices to learning about the world around you.

Highlights
  • Lightning-fast QR/barcode scanning
  • AI recognition for plants, animals, cars
  • Built-in flash for low-light scanning
  • Simple, lightweight, and intuitive interface
  • Save and organize scanned information
  • Generate QR codes
Features
Read full description

SubGuard: Subscription Tracker 100% Private, Free Trial Alerts & Anti-Charge Guard Tired of unexpected auto-renewals, forgotten free trials, and mysterious recurring charges? SubGuard is your ultimate local-first, zero-knowledge subscription manager designed to protect your wallet without compromising your personal privacy. Unlike traditional finance apps, SubGuard requires NO bank logins, NO account registration, and NO tracking. All your financial data stays 100% on your device. WHY SUBGUARD? 100% On-Device & Private: Zero data collection. No cloud servers, no bank links, and no advertising trackers. Your data belongs solely to you. Smart Free Trial Alerts: Never get caught by surprise. Receive timely push notifications before free trials convert into paid subscriptions. Dark Pattern Buster: Direct 1-click links to cancellation pages—making it easy to unsubscribe. AI Refund & Legal Assistant: Accidental charge? Instantly draft legally compliant refund letters tailored to US & Canadian consumer protection standards with one tap. Spending Analytics: Expense forecasting helps you eliminate unnecessary spending. KEY FEATURES Custom Lead-Time Alerts: Set precise notification windows (e.g., 3 days, 1 day, or 2 hours before billing). Lock Screen Widgets: Keep urgent trial countdowns visible at a glance. OCR Quick Import: Snap a screenshot of your Apple Pay receipt or email invoice to auto-fill subscription details in seconds. Take control of your recurring expenses today with SubGuard—your personal financial shield. Subscription Terms Payment will be charged to your Apple ID account upon confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage or turn off auto-renewal in your Apple ID account settings after purchase. Any unused portion of a free trial period will be forfeited upon purchasing a subscription. Download SubGuard Today! Download SUBGUARD now for a cleaner, faster, and more organized iPhone experience! Terms of Service: https://ocr.ocrswiftscanner.com/termsOfService.html Privacy Policy: https://ocr.ocrswiftscanner.com/privacyPolicy.html

Screenshots

Big QR Reader4 screens
SubGuard4 screens

Verdict

The call

The clearest difference is ads: SubGuard at none against Big QR Reader's shown. SubGuard also leads on monetization model (free vs ad-supported) and ratings volume (9 vs 2). Big QR Reader's advantage is rating (5.0 vs 4.6) and iOS requirement (13.0 vs 18.0). On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Big QR Reader holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

UpkeepUpdate frequency

Big QR Reader ships an update every 5 days, SubGuard every 9 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
Big QR Reader versus SubGuard: the parameters behind the verdict, then further details
ParameterBig QR ReaderSubGuard
PriceFreeFree
Rating5.0 (2 ratings) — better4.6 (9 ratings)
Positive reviews—0.0% of reviews
Number of ratings29 — better
Update frequencyEvery 5 days — betterEvery 9 days
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size23 MB16 MB
Age rating4+4+
DeveloperShenzhen Peidatong Technology Co., Ltd.MEGAMOBI LIMITED

Customer experience

Big QR Reader

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

SubGuard

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Big QR Reader

No in-app purchases

None

SubGuard

No in-app purchases

Questions

Is Big QR Reader free?
Big QR Reader is free to download, with no in-app purchases.
Is SubGuard free?
SubGuard is free to download, with no in-app purchases.
Which has better reviews, Big QR Reader or SubGuard?
Big QR Reader is rated higher. Big QR Reader averages 5.0 out of 5 from 2 ratings, while SubGuard averages 4.6 from 9 ratings.
Do Big QR Reader or SubGuard have ads?
Big QR Reader shows ads; SubGuard does not.
Which is updated more often, Big QR Reader or SubGuard?
Big QR Reader ships an update every 5 days, and SubGuard every 9 days. Most recently, Big QR Reader was updated on October 30, 2026 and SubGuard on October 25, 2026.

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