Comparison

Calculator Plus vs QR Barcode Scanner Reader

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

Head to head
About

Calculator Plus

This app simplifies everyday math with a clean interface and a history of all your calculations. Easily handle basic operations, percentages, and more, with the ability to review past entries for quick reference. It's designed for efficient problem-solving on the go.

Highlights
  • Clear, readable calculation display
  • Basic arithmetic and percentages
  • Backspace for error correction
  • Memory buttons and calculation history
  • Light and dark themes
  • Advanced functions (squaring, square root, pi)
Features
Read full description

The world’s favorite calculator app, with more than 40 million downloads worldwide. The perfect day-to-day calculator for both iPhone and iPad, Calculator Plus is easy to use and beautifully designed to be your daily calculator. Calculator Plus makes math simple and fun with crisp HD and a layout for fast and easy calculations. Solve all of your everyday calculations, from simple addition to fractions and multiplication. Calculator Plus remembers everything you calculate, and lets you review your history and past calculations anytime, making it perfect for shopping, doing homework and schoolwork, balancing checkbooks, making tips, taking notes, calculating taxes, and everyday math problems you’re sure to encounter. Calculator Plus is also an exceptional school calculator. Calculator Plus is the perfect calculator for teachers, students, and working professionals. If you quit the calculator and go do something else, it's all still there whenever you come back. You'll never need to type the same calculation twice again making it the perfect math calculator to take the best notes and solve any problem. FEATURES: - Calculations in clear, elegant type that's easy to read - Perform all the basic calculations you could ever need including addition, subtraction, division, multiplication, and percentages - Use backspace anytime to correct a simple mistake, instead of starting over - Keep track of your results using the memory buttons and history screen - Express yourself with light and dark themes - For more complicated and advanced problems, use options like squaring, square root, percent and the pi button Try out Calculator Plus – the simplest, strongest equation solver around! From everyday addition and subtraction to complex percent and fraction problems, you can solve and track it all for free. Download Calculator Plus for your iPhone or iPad and finally put that handheld calculator to rest. This version of Calculator Plus is ad-supported. An ad-free version is also available. Calculator Plus © 2022 Digitalchemy, LLC

About

QR Barcode Scanner Reader

Read full description

Scan any QR code or barcode free, unlimited — from your camera or straight from a photo. Create your own codes for Wi-Fi, contacts, URLs, and more. 100% offline, no account, no ads, no subscription. WHY THIS APP Most QR scanner apps push a monthly subscription just to scan. This app's core scanning is free, unlimited, forever. Want more — Wi-Fi/contact code creation, unlimited photo scanning, custom colors? A single $4.99 purchase unlocks it all, permanently. FREE • Unlimited live camera scanning — QR, Aztec, Data Matrix, PDF417, EAN-13, UPC-A, Code 128, and more (15+ formats) • Scan from photos — 3 per day • Create QR codes for URLs and plain text • Smart actions: a Wi-Fi code connects with one tap, a URL opens in your browser, a contact card saves to your address book • Recent 10 scans in history PRO — $4.99, ONE-TIME • Unlimited scan from photos • Create QR codes for Wi-Fi, vCard contacts, email, phone, SMS, calendar events, and locations • Custom QR colors and a center logo • Unlimited history and favorites Not a subscription — pay once, nothing auto-renews, nothing to cancel. SCAN FROM PHOTOS Got a screenshot of a QR code? Pick it from your photo library and the app identifies it automatically — useful for QR codes friends sent you, saved Wi-Fi cards, or payment codes. Most scanner apps only work with a live camera; this one also reads photos. 100% PRIVACY • No account, no cloud, no tracking • Every scan and every code you create is processed on this iPhone only • Wi-Fi passwords go through Apple's own network framework — we never see them REQUIREMENTS • iOS 17.0 or later • Camera access for live scanning • Photo Library access (optional, to scan from images) • Local Network access (optional, for one-tap Wi-Fi connect) Terms of Use: https://taxlite.net/simple_qr_scanner_pro/terms.html Privacy Policy: https://taxlite.net/simple_qr_scanner_pro/privacy.html

Screenshots

Calculator Plus4 screens
QR Barcode Scanner Reader4 screens

Verdict

The call

The clearest difference is price: QR Barcode Scanner Reader at Free against Calculator Plus's $3.99. Calculator Plus's advantage is in-app purchases (none vs 3) and iOS requirement (15 vs 17.0). On update cadence, ads 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

QR Barcode Scanner Reader is free to download; Calculator Plus costs $3.99 up front. QR Barcode Scanner Reader sells 3 in-app purchases, starting at $4.99 per month. Calculator Plus asks for nothing beyond the download.

UpkeepUpdate frequency

Calculator Plus ships an update every 5 weeks, QR Barcode Scanner Reader every 2 months. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
Calculator Plus versus QR Barcode Scanner Reader: the parameters behind the verdict, then further details
ParameterCalculator PlusQR Barcode Scanner Reader
Price$3.99Free — better
Rating4.9 (694 ratings) — better—
Positive reviews93.8% of reviews—
Number of ratings694 — better—
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better17.0
Further details — not scored
Size71 MB3 MB
Age rating4+4+
DeveloperDigitAlchemy LLCZHENGQIAO JIANG

Bugs and requests

Calculator Plus

Reported bugs

2 issues
  • Clicking sound not removable
  • Compatibility issues on older devices

Requested features

3 requests
  • Dark mode option
  • Algebraic order of operations
  • Customizable color schemes

QR Barcode Scanner Reader

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Calculator Plus

No in-app purchases

3 purchases

QR Barcode Scanner Reader

Subscriptions2
  • Pro Monthly3 Days trial$4.991 Month
  • Pro Yearly$29.991 Year
One-time1
  • Pro Lifetime$79.99

Questions

Is Calculator Plus free?
Calculator Plus costs $3.99, with no in-app purchases.
Is QR Barcode Scanner Reader free?
QR Barcode Scanner Reader is free to download, with in-app purchases available.
Do Calculator Plus or QR Barcode Scanner Reader have ads?
Neither Calculator Plus nor QR Barcode Scanner Reader shows ads.
Which is updated more often, Calculator Plus or QR Barcode Scanner Reader?
Calculator Plus ships an update every 5 weeks, and QR Barcode Scanner Reader every 2 months. Most recently, Calculator Plus was updated on October 13, 2026 and QR Barcode Scanner Reader on October 6, 2026.

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