Comparison

CALC Smart Calculator ± vs Qr Code Reader & Scanner ZapQR

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

Head to head
About

CALC Smart Calculator ±

This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.

Highlights
  • Real-time results
  • Unit and currency conversions
  • Custom functions and constants
  • Shareable calculation history
  • Landscape mode with tape-roll
  • Gratuity calculator
Features
Read full description

Why Choose CALC Smart? ► Used by Scientists, Professionals and Students alike ► Apple-Featured: Spotlighted in Utilities and Calculate & Convert. ► User-Loved: Over 10k+ global reviews and 200M+ sessions validate its utility. ► Educator-Certified: Praised by teachers on the Educational App Store for its intuitive UI. Ready for the Latest OS * Multitask on your iPad and use 3D Touch shortcuts. * Search your calculation history with Spotlight. * Widget with history integration. * Apple Watch support, complete with haptic feedback and complications. Top 10 Unique Features ① Real-time results, even with incomplete parentheses. ② Landscape mode for shareable history and tape-roll. ③ Optimized custom keyboard & widget to save space and time. ④ Fast unit and currency conversions—a swipe away. ⑤ Quick gratuity calculator with rounding options. ⑥ Display decimals as fractions with 1/999 precision. ⑦ Create unlimited custom functions and constants. ⑧ Easy expression sharing via link. ⑨ Built-in timer. ⑩ Limitless themes and layouts. Why Users Love CALC * Live Math: Natural input, even for complex calculations. * Swipe Functions: Over 60 advanced math functions just a swipe away. * History: Never lose track of your calculations. * Conversion: 21 categories, plus custom options. Additional Features * Edit on the Fly: Long-press to modify expressions and numbers. * Audio Feedback: Customize tapping sounds. * Styling: Multiple font choices. * Enterprise-Ready: EMM support with MDM & AppConfig. We Listen * Frequent updates based on your feedback. Got a suggestion? Visit our UserVoice page: https://QApps.UserVoice.com Custom Background Tip * Design your own CALC background with images from NASA’s multimedia library: https://nasa.gov/multimedia Terms & Usage * Using this app means agreeing to the standard Terms of Use. Standard Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Qr Code Reader & Scanner ZapQR

This app allows you to quickly scan and generate QR codes for various purposes, including website links, Wi-Fi credentials, and contact information. It offers a user-friendly interface, organizational tools, and secure on-device processing for your data.

Highlights
  • Scan QR codes for URLs, Wi-Fi, contacts, and more
  • Generate QR codes for websites, contacts, Wi-Fi, and text
  • Organize and manage scanned and generated codes
  • Share codes instantly via messaging, email, or other apps
  • Dark mode and clean user interface
  • On-device processing for enhanced privacy
Features
Read full description

Effortlessly Scan, Generate & Manage QR Codes with ZapQR Experience the power and convenience of ZapQR, your all-in-one app for seamless QR code scanning, generation, and storage. Whether it's scanning menus, connecting to Wi-Fi, saving contacts, or creating your own QR codes, ZapQR delivers speed, precision, and simplicity. Why You’ll Love ZapQR: • Blazing-Fast Scanning: Point, scan, and go. ZapQR supports URLs, Wi-Fi credentials, contact cards, text, emails, phone numbers, SMS, calendar invites, and barcodes. • Create QR Codes in Seconds: Generate codes for URLs, contacts, Wi-Fi, text notes, and more—customize and save them instantly. • Organize with Ease: Store your generated and scanned codes in a neat, searchable library. Pick, edit, or share with ease. • Share Instantly: Save to Photos, share via messaging or email, or export to other apps with a tap. • Dark Mode & Clean UI: Modern, user-friendly interface that’s light on the eyes and optimized for all devices. • Privacy You Can Trust: ZapQR processes everything on-device—your scans and data stay private and secure. Tap into Productivity with ZapQR: Scan codes to instantly launch websites or access deeper app integrations. Generate secure Wi-Fi QR codes so guests can connect effortlessly. Share contact vCards with one simple code. Keep important links or notes always within reach. What's New in ZapQR: Improved scanning accuracy across varied lighting scenarios. Smarter code recognition—even from images or screen captures. Enhanced library sorting and powerful search functionality. UI refinements for smoother navigation. Legal Privacy Policy: https://www.firebolt.page/multiscanner/privacy-policy Terms of Use: https://www.firebolt.page/policy/terms-of-use

Screenshots

CALC Smart Calculator ±4 screens
Qr Code Reader & Scanner ZapQR4 screens

Verdict

The call

The clearest difference is review sentiment: CALC Smart Calculator ± at 87% against Qr Code Reader & Scanner ZapQR's 14%. CALC Smart Calculator ± also leads on rating (4.8 vs 4.4) and ratings volume (2.4K vs 100). Qr Code Reader & Scanner ZapQR's advantage is iOS requirement (15.4 vs 17.0). On price, update cadence, ads and in-app purchases 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. CALC Smart Calculator ± sells 4 in-app purchases, starting at $0.99 per 3 months and Qr Code Reader & Scanner ZapQR sells 3 in-app purchases, starting at $2.29 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

CALC Smart Calculator ± holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: CALC Smart Calculator ± has 2.4K ratings behind it against 100, so its average is the more settled of the two. Written reviews point the same way: 87% of CALC Smart Calculator ±'s written reviews are positive against 14% of Qr Code Reader & Scanner ZapQR's.

UpkeepUpdate frequency

CALC Smart Calculator ± ships an update fortnightly, Qr Code Reader & Scanner ZapQR weekly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
CALC Smart Calculator ± versus Qr Code Reader & Scanner ZapQR: the parameters behind the verdict, then further details
ParameterCALC Smart Calculator ±Qr Code Reader & Scanner ZapQR
PriceFreeFree
Rating4.8 (2.4K ratings) — better4.4 (100 ratings)
Positive reviews87.2% of reviews — better14.3% of reviews
Number of ratings2.4K — better100
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS17.015.4 — better
Further details — not scored
Size16 MB18 MB
Age rating4+4+
DeveloperQApps LLCFirebolt Online, LLC

Customer experience

CALC Smart Calculator ±

All ratings2,370 ratings
Positive96.7%
Neutral2.1%
Negative1.2%
Written reviews641 reviews
Positive87.2%
Neutral3.9%
Negative8.9%

Qr Code Reader & Scanner ZapQR

All ratings100 ratings
Positive84.0%
Neutral5.0%
Negative11.0%
Written reviews14 reviews
Positive14.3%
Neutral21.4%
Negative64.3%

Bugs and requests

CALC Smart Calculator ±

Reported bugs

3 issues
  • Calculation errors in certain scenarios
  • Forced tutorial popup on every launch
  • Unreliable widget functionality

Requested features

4 requests
  • Ability to easily clear calculation history
  • Option to customize button layout
  • Support for entering hexadecimal numbers
  • Integration with other apps and services

Qr Code Reader & Scanner ZapQR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

CALC Smart Calculator ±

Subscriptions4
  • Quarterly Supporter$0.993 Months
  • Quarterly Supporter7 Days trial$1.993 Months
  • Annual Contributor$2.991 Year
Show 1 more
  • Annual Contributor7 Days trial$5.991 Year
3 purchases

Qr Code Reader & Scanner ZapQR

Subscriptions2
  • Weekly$2.297 Days
  • Yearly$9.891 Year
One-time1
  • Lifetime$19.99

Questions

Is CALC Smart Calculator ± free?
CALC Smart Calculator ± is free to download, with in-app purchases available.
Is Qr Code Reader & Scanner ZapQR free?
Qr Code Reader & Scanner ZapQR is free to download, with in-app purchases available.
Which has better reviews, CALC Smart Calculator ± or Qr Code Reader & Scanner ZapQR?
CALC Smart Calculator ± is rated higher. CALC Smart Calculator ± averages 4.8 out of 5 from 2.4K ratings, while Qr Code Reader & Scanner ZapQR averages 4.4 from 100 ratings.
Do CALC Smart Calculator ± or Qr Code Reader & Scanner ZapQR have ads?
Neither CALC Smart Calculator ± nor Qr Code Reader & Scanner ZapQR shows ads.
Which is updated more often, CALC Smart Calculator ± or Qr Code Reader & Scanner ZapQR?
CALC Smart Calculator ± ships an update fortnightly, and Qr Code Reader & Scanner ZapQR weekly. Most recently, CALC Smart Calculator ± was updated on November 6, 2026 and Qr Code Reader & Scanner ZapQR on November 3, 2026.

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