Comparison

QR Code Inspector vs CryptoDuck

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

Head to head
About

QR Code Inspector

Features
Read full description

QR codes are spreading at breakneck speed, but many people are unaware of the risks behind a QR code. URLs with malware, expensive phone dailers, falsified bank details or configuration manipulations on smartphones. With our analysis scanner for QR codes, you can easily read all data in advance and check for malicious content. ย  QR Code Inspector is a free and secure QR scanner that identifies different types of QR codes and displays detailed information and tips on careful handling before performing any actions. URLs and links to the Internet are also checked against spam and malware lists. Apart from the information required to perform the tasks, we do not collect or record any other data. Our app is specifically designed for the secure analysis of QR codes without data storage made in Switzerland.

About

CryptoDuck

Features
Read full description

CryptoDuck helps you and your friends create a secret language only insiders can read. Type a message, pick an encryption rule, and get ciphertext in one tap. Share it anywhere - only those who know the rule can decode it. Perfect for couples, close friends, and fun group chats. [Core Features] - Encrypt and decrypt text with custom rules - Build your own cipher: letters, numbers, emoji - mix freely - Rule management: create, edit, import, export, and share via Deep Link - Share as plain text, file, or beautiful ciphertext card (Pro: no watermark) - History: auto-save sessions with one-tap refill (Pro) - Rule Store: couple packs, emoji ciphers, gaming codes and more [System Extensions] - Home Screen Widget: see your active rule, jump straight to encrypt or decrypt - Shortcuts: encrypt or decrypt without opening the app, results copied to clipboard (Pro) - iCloud sync: keep rules across your devices (Pro) [Privacy First] - Plaintext, ciphertext, and rules stay on your device by default - No ads, no third-party analytics, no cross-app tracking - Optional iCloud sync is handled by Apple [Free vs Pro] Free: 3 manual rules, 12 total, 500 chars per encryption Pro: unlimited rules, no char limit, history, iCloud sync, watermark-free cards, Widget, Shortcuts and all paid rule packs [Important Notice] CryptoDuck uses custom character mapping - not AES or military-grade cryptography. Do not use for highly sensitive data. Ideal for fun secret messaging between people who share a rule. Download CryptoDuck and start your secret conversation. [Auto-Renewable Pro Subscription] 1. Subscription: Continuous (Monthly/Yearly) Pro Membership 2. Duration: One month or one year. Pro features are available during the active subscription period. 3. Price: Monthly and Yearly plans available (actual price shown on the App Store purchase sheet). 4. Payment: Charged to your Apple ID account upon confirmation of purchase. 5. Cancellation: To cancel auto-renewal, turn it off at least 24 hours before the current period ends in Settings > Apple ID > Subscriptions. Otherwise, the subscription renews automatically. 6. Renewal: Your Apple ID account will be charged within 24 hours before the period ends. Upon successful payment, the subscription extends for one more period (1 month or 1 year). 7. Privacy Policy: https://baitemi.com/jmy/privacy.html 8. Subscription Terms: https://baitemi.com/jmy/subscription.html

Screenshots

QR Code Inspector3 screens
CryptoDuck4 screens

Verdict

The call

The clearest difference is in-app purchases: QR Code Inspector at none against CryptoDuck's 6. QR Code Inspector also leads on update cadence (every 6 weeks vs every 3 months) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. CryptoDuck sells 6 in-app purchases, starting at $0.99 per month. QR Code Inspector asks for nothing beyond the download.

UpkeepUpdate frequency

QR Code Inspector ships an update every 6 weeks, CryptoDuck every 3 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard3 real differences ยท 3 level
QR Code Inspector versus CryptoDuck: the parameters behind the verdict, then further details
ParameterQR Code InspectorCryptoDuck
PriceFreeFree
Update frequencyEvery 6 weeks โ€” betterEvery 3 months
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better16.0
Further details โ€” not scored
Size20 MB11 MB
Age rating4+4+
DeveloperSSIBeijing Baitemi Technology Co., Ltd

In-app purchases

None

QR Code Inspector

No in-app purchases

6 purchases

CryptoDuck

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Yearly$7.991 Year
One-time4
  • Couple Pack$0.99
  • Emoji Pack$0.99
  • Festival Pack$0.99
Show 1 more
  • Pro Lifetime$14.99

Questions

Is QR Code Inspector free?
QR Code Inspector is free to download, with no in-app purchases.
Is CryptoDuck free?
CryptoDuck is free to download, with in-app purchases available.
Do QR Code Inspector or CryptoDuck have ads?
Neither QR Code Inspector nor CryptoDuck shows ads.
Which is updated more often, QR Code Inspector or CryptoDuck?
QR Code Inspector ships an update every 6 weeks, and CryptoDuck every 3 months. Most recently, QR Code Inspector was updated on October 25, 2026 and CryptoDuck on October 28, 2026.

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