Comparison

Scan QR Code Fast vs Calculator

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

Head to head
About

Scan QR Code Fast

Easily scan QR codes and barcodes with automatic detection and decoding. Access relevant options based on code type, from URLs to product information. Save scan history and use it for coupons to get discounts.

Highlights
  • Automatic QR and barcode detection
  • Reads all QR/barcode types
  • Provides relevant action options
  • Scans coupon codes for discounts
  • Saves scan history
  • Ad-free experience with subscription
Read full description

Full-featured QR Scanner Pro is extremely easy to use; simply point to code you want to scan and the app will automatically detect and scan it. No need to press any buttons, take photos, or adjust. QR Code reader can scan and read all QR / barcode types including text, URL, ISBN, product, contact, calendar, email, location, Wi-Fi and many other formats. After scan and automatic decoding, the user is provided with only the relevant options for individual QR or Barcode type and can take appropriate action. You can even use the app to scan coupons codes to receive discounts and save some money. User guide as following To scan simply open the app and align the code. it will automatically recognize any code. To view history, please click the history button. Key Feature : - Safe & easy-to-use scanner app - Auto-detect - Free extreme QR code reader app - Free lightning QR code scanner app. - Free Barcode scanner app - Free Barcode reader app - Save all scan and maintain all History This app can use for QR code scanner Barcode scanner, Barcode reader and scanner QR code scanner app * SUBSCRIPTIONS You can subscribe to QR Reader & QR Creator. to get access to premium features, * Create Custom QR codes. * Unlimited QR and Barcode Scans. * Ads-free experience. * All features for 3.99/7 Days after 3 days FREE trial. Options: - 3-day free trial, then renews weekly for $3.99 Link to Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Link to Privacy Policy: http://emmito.co/app/qrscannerprivacy.html

About

Calculator

This versatile tool combines a scientific calculator with currency and unit conversion capabilities. It offers a history manager, full editing options, and an intuitive interface for school, work, and daily tasks. Supports offline currency conversion.

Highlights
  • Scientific calculator functions
  • Currency converter with 37 currencies
  • Unit converter with 181 units
  • History manager for calculations
  • Offline currency conversion
  • Full editing options (undo/redo)
Features
Read full description

This multi-function app is a scientific calculator packaged with currency converter and unit converter. It is powerful and user-friendly for school, work and for everyday use. == Feature Highlights == • History Manager: review calculation/conversion history, reuse/share/insert/copy expression and result, and delete individual/all records. See below for details. • iPad Landscape Mode: display functions and numeric keys side by side for higher efficiency, or display history records and numeric keys side by side. See below for details. • Full editing options: Undo, Redo, Select, Select All, Cut, Copy, Paste, and Cancel • Full expression display in multiple lines: review and easily check entry errors • Caret support, easier to edit an entry • Instant detection and identification of invalid entries • Unique and playful button sound and haptic effects, both mutable (note: haptic effects are only available on iPhone 7 & plus and later iPhone models) • Aesthetic in user interface, easy and simple to use == Scientific Calculator == • +, −, ×, ÷, (), +/-, %, delete, clear-all • (Inverse) trigonometric functions: sin, cos, tan, asin, acos, atan (radian & degree) • (Inverse) hyperbolic functions: sinh, cosh, tanh, asinh, acosh, atanh • Constants: e, π • Scientific notation E: enter numbers in the format of scientific notation, such as, 1.8E6 or 2.21E-10 • Roots: square root, cubic root • Power & exponential functions: x^2, x^3, x^y, 2^x, 3^x, 10^x, e^x • Logarithmic functions: ln, log2, log10 • Absolute value: |x| == Currency Converter == • +, −, ×, ÷, (), +/-, %, delete, clear-all • Converts back-and-forth and does calculation as well • Supports daily updates for 37 major world currencies (AED, AUD, BGN, BRL, CAD, CHF, CNY, CZK, DKK, EUR, GBP, HKD, HUF, IDR, ILS, INR, ISK, JPY, KRW, MXN, MYR, NOK, NZD, PEN, PHP, PLN, RON, RUB, SAR, SEK, SGD, THB, TRY, TWD, USD, ZAR) • Supports offline conversion. When there is no internet connection, last downloaded rates are available for conversion. • Daily updates from three trusted sources: the U.S. Federal Reserve, European Central Bank, Bank of Canada == Unit Converter == • +, −, ×, ÷, (), +/-, %, delete, clear-all • Converts back-and-forth and does calculation as well • Supports 13 common categories: Area, Data, Energy, Force, Frequency, Length, Pressure, Speed, Temperature, Time, Volume, Weight, Others • 181 units of measurement, 3,207 conversions • Supports both British Imperial and U.S. Customary • Supports unit measurements in both Mainland China & Taiwan == In-app Purchases == We offer the following two in-app purchases to access additional features. Your purchase and generous support can greatly help us to continue developing this app. Thank you! >> History Manager - USD$0.99, limited free trial: • One time purchase is for both iPhone & iPad • Review calculation/conversion history • Copy or share expression and result • Reuse expression • Insert expression or result at the caret (cursor) with detection of error/invalid input • Delete individual or all records • History records are listed in alternate colors for easy browsing, each is marked with its date of creation. Long expressions are compressed or expanded automatically. • Calculator, Currency and Unit converters all support History >> iPad Landscape Mode - USD$0.99, limited free trial: • When using Calculator, iPad Landscape displays functions and numeric keys side by side, for higher efficiency. Calculation history and numeric keys may also be displayed side by side, allowing you to watch recordkeeping of calculation simultaneously. • When using Currency & Unit converters, iPad Landscape displays conversion history and numeric keys side by side, allowing you to watch recordkeeping of conversion simultaneously. == Support == • Website: https://www.theequally.com • Contact us: calculatorcu@theequally.com == Credits == UX designer: Cheryl S. Yee UI designer: Cheryl S. Yee

Screenshots

Scan QR Code Fast4 screens
Calculator4 screens

Verdict

The call

The clearest difference is price: Calculator at Free against Scan QR Code Fast's $2.99. Scan QR Code Fast's advantage is update cadence (every 3 days vs every 3 weeks). On rating, ratings volume, 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

Calculator is free to download; Scan QR Code Fast costs $2.99 up front. Scan QR Code Fast sells 3 in-app purchases, starting at $1.99 per 7 days and Calculator sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Calculator holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 4 respectively.

UpkeepUpdate frequency

Scan QR Code Fast ships an update every 3 days, Calculator every 3 weeks. The most recent releases landed on September 19, 2026 and June 4, 2026 respectively.

Scorecard2 real differences · 8 level
Scan QR Code Fast versus Calculator: the parameters behind the verdict, then further details
ParameterScan QR Code FastCalculator
Price$2.99Free — better
Rating4.8 (6 ratings)5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings6 — better4
Update frequencyEvery 3 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.612.0 — better
Further details — not scored
Size27 MB19 MB
Age rating4+4+
DeveloperEmmito (Pvt) Ltdhua-shan cheng

Customer experience

Scan QR Code Fast

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Calculator

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Scan QR Code Fast

Subscriptions3
  • Weekly Subscription7 Days trial$1.997 Days
  • Monthly Subscription7 Days trial$4.991 Month
  • Annual Subscription7 Days trial$49.991 Year
2 purchases

Calculator

One-time2
  • Unlock iPad Landscape$0.99
  • Unlock History$0.99

Questions

Is Scan QR Code Fast free?
Scan QR Code Fast costs $2.99, and also offers in-app purchases.
Is Calculator free?
Calculator is free to download, with in-app purchases available.
Which has better reviews, Scan QR Code Fast or Calculator?
Calculator is rated higher. Scan QR Code Fast averages 4.8 out of 5 from 6 ratings, while Calculator averages 5.0 from 4 ratings.
Do Scan QR Code Fast or Calculator have ads?
Neither Scan QR Code Fast nor Calculator shows ads.
Which is updated more often, Scan QR Code Fast or Calculator?
Scan QR Code Fast ships an update every 3 days, and Calculator every 3 weeks. Most recently, Scan QR Code Fast was updated on September 19, 2026 and Calculator on June 4, 2026.

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