Comparison

Calculator₊ vs calculator HD⁻

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

Head to head
About

Calculator₊

This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversions. It features an AI-powered math solver that can solve problems from photos and provides a dedicated space for math notes. Accessibility features ensure ease of use for all users.

Highlights
  • Basic and scientific calculations
  • Unit and currency converter
  • AI-powered math solver with photo recognition
  • Math notes with instant solutions
  • Calculation history log
  • Accessibility features (Dynamic Text Size, VoiceOver, High-Contrast Mode)
Features
Read full description

America's #1 Calculator App! Download Calculator₊ Now - Your All-in-One Math Solution! We're excited to announce the biggest update to Calculator₊ in 10 years! With over 200 million downloads and a whopping 3 million+ 5-star ratings, Calculator₊ is the trusted choice of millions worldwide. And now, it's even better! More Than Just Your Average Calculator! • Standard Calculator: Breeze through basic arithmetic operations like addition, subtraction, multiplication, and division. • Scientific Calculator: Tackle complex calculations with ease, including trigonometric, logarithmic, and exponential functions. • Calculation History: Keep track of your past calculations with a detailed history log. • Unit Converter: Effortlessly convert units like inches to centimeters and much more, making it a handy tool for everyday use. • Percentage Calculator: Easily calculate percentages, increases, and decreases with pre-designed input fields that do the work for you. • Currency Converter: Convert currencies in real-time, including Bitcoin, with the latest exchange rates. • Fraction Calculator: Work seamlessly with fractions – perfect for students and professionals alike. • Ad-Free Experience: Say goodbye to annoying full-screen ads and focus on your calculations. Be Amazed by Our New AI-Powered Math Solver! • AI Math Solutions: Instantly solve math equations, quizzes, and word problems with our advanced AI. Use the Photo Solver to snap a picture of any problem, and Calculator₊ will work its magic. • Math Notes: A dedicated note-taking tool for all your math needs. Jot down equations, diagrams, and notes in a space designed for mathematical thinking. • Instant Math: In Math Notes mode, simply write an equation, add an "=", and Calculator₊ will generate the solution in real-time. Built for Everyone, Now Even More Accessible! Calculator₊ is designed to work effortlessly for all users, no matter how you use your iPhone, and includes these additional accessibility features: • Dynamic Text Size: Scale the calculator interface to the text size that works best for you, without losing layout clarity. • VoiceOver Support: Navigate & Calculate using VoiceOver, fully compatible with iOS accessibility settings. • High-Contrast Mode: A bold, high-contrast display that makes every button and result instantly readable in any lighting condition. • Dark and Light Mode: Calculator₊ automatically adjusts to your preferred mode. Why Choose Calculator₊? • Proven Track Record: Over a decade of providing fast and reliable calculations. • Loved by Millions: Join the 200+ million users who rely on Calculator₊, with an average rating of 4.7 stars from 3.5 million reviews. • Versatile & Powerful: Handles everything from basic sums to advanced scientific calculations. Perfect for school, work, or home. Celebrate with a Special Gift! To celebrate the release of this massive update, we're offering a 1-MONTH FREE TRIAL of our premium features, including: • Ad-Free Experience: No more pesky ads. • Unlimited AI Math Solving: Solve as many equations and problems as you need. • Unlimited Fraction Calculations: Ideal for students and professionals alike. • Unlimited Currency Conversions: Including real-time Bitcoin conversions. • Premium Customer Support: Get priority assistance from our expert support team. If you have any suggestions or questions, our support team is ready to help. Simply email us at support@impalastudios.com. Terms & Conditions: https://impalastudios.com/terms Privacy Policy: https://impalastudios.com/privacy

About

calculator HD⁻

A powerful and intuitive calculator app designed for simplicity and beauty. It offers a complete record of operations that can be reviewed and edited, along with scientific functions and multiple themes. Enjoy enhanced functionality with an optional subscription.

Highlights
  • Records operation process
  • Check and edit operations
  • Elegant and intuitive interface
  • Displays equation and result simultaneously
  • Supports scientific functions
  • Multiple themes
Features
Read full description

This app uses the basic functions of the calculator to make the simplest, best calculator in the app store. And it can record the operation process completely, and can check and edit at any time. Designed with simplicity, usability and beauty in mind! Elegant & Intuitive interface Displays both the equation & the result at the same time Supports many scientific functions Multiple themes Application subscription: 1. Subscription Service: Quarterly Member (3 months) 2. Subscription price: ¥18 / quarter for consecutive quarterly membership 3. Payment: After the user confirms the purchase and the payment is credited to the iTunes account 4. Apple iTunes account will deduct the fee within 24 hours before the expiration, and the subscription cycle will be extended by one after the successful deduction 5. During the subscription period, you can use all key sounds to calculate data 6. The subscription will be automatically renewed for the same price and period (one year) as before, unless the automatic renewal is closed at least 24 hours in advance before the end of the current subscription period 7. After purchase, users can manage subscription and turn off automatic renewal in account Settings. For more information please go to: http://support.apple.com/kb/ht4098" Please refer to the following links for terms of Service and Privacy policy: Privacy policy: https://cdn.40sishi.com/app/resources/jisuanqihd/privacy.html Service agreement: https://cdn.40sishi.com/app/resources/jisuanqihd/vipservice.html The price is equal to the price of a subscription in DOLLAR terms specified in Apple's App Store Pricing Table.

Screenshots

Calculator₊4 screens
calculator HD⁻4 screens

Verdict

The call

The clearest difference is ratings volume: Calculator₊ at 1.7M against calculator HD⁻'s 2.5K. Calculator₊ also leads on update cadence (every 3 weeks vs every 3 months) and chart position (#113 vs unranked). On price, rating, review sentiment and ads 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. Calculator₊ sells 10 in-app purchases, starting at $0.99 per month and calculator HD⁻ sells 6 in-app purchases, starting at $2.99 per 3 months. 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, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Calculator₊ has 1.7M ratings behind it against 2.5K, so its average is the more settled of the two. Written reviews point the same way: 63% of Calculator₊'s written reviews are positive against 61% of calculator HD⁻'s.

UpkeepUpdate frequency

Calculator₊ ships an update every 3 weeks, calculator HD⁻ every 3 months. The most recent releases landed on November 12, 2026 and November 11, 2026 respectively.

Scorecard4 real differences · 7 level
Calculator₊ versus calculator HD⁻: the parameters behind the verdict, then further details
ParameterCalculator₊calculator HD⁻
PriceFreeFree
Rating4.7 (1.7M ratings) — better4.5 (2.5K ratings)
Positive reviews63.1% of reviews — better61.1% of reviews
Number of ratings1.7M — better2.5K
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#113 — better—
DevicesiPhone, iPad, iPod, Apple Watch, Vision Pro — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size247 MB98 MB
Age rating4+4+
DeveloperImpala StudiosBeijing four time ledo Technology Co., Ltd.

Customer experience

Calculator₊

All ratings1,736,431 ratings
Positive92.2%
Neutral3.5%
Negative4.3%
Written reviews3,118 reviews
Positive63.1%
Neutral6.2%
Negative30.8%

calculator HD⁻

All ratings2,509 ratings
Positive85.9%
Neutral3.9%
Negative10.2%
Written reviews54 reviews
Positive61.1%
Neutral1.9%
Negative37.0%

User reviews

Calculator₊

From 1.7M App Store ratings

What we love

  • 💻 Useful calculator features
  • 🎨 Customizable backgrounds and themes
  • 📚 Helpful history tracking

Room to improve

  • 📺 Intrusive full-screen ads
  • 💰 Expensive subscription model
  • 🔍 Ads blocking calculator functionality

calculator HD⁻

From 2.5K App Store ratings

What we love

  • 👍 Good calculator
  • 🚀 Efficient calculations

Room to improve

  • 💰 Paid features
  • 🔒 Locked to one device
  • 🐛 Calculation errors
  • 🙅‍♀️ Lack of functionality

Bugs and requests

Calculator₊

Reported bugs

2 issues
  • Incorrect calculation results for certain functions
  • Inability to delete last entered digit without clearing entire calculation

Requested features

3 requests
  • Ability to delete individual calculation history entries
  • More free advanced calculator features (fractions, currency, etc.)
  • Improved ad placement that doesn't interfere with usage

calculator HD⁻

Reported bugs

2 issues
  • Incorrect calculation results
  • Compatibility issues with new devices

Requested features

3 requests
  • More customization options
  • Improved user interface
  • Free version without ads

In-app purchases

10 purchases

Calculator₊

Subscriptions10
  • Premium Member Special Offer7 Days trial$0.991 Month
  • Monthly Premium Member3 Days trial$0.991 Month
  • 1 Month Premium Access7 Days trial$1.491 Month
Show 7 more
  • Half-Yearly Premium Member3 Days trial$3.996 Months
  • Calculate Faster, AI, & No Ads3 Days trial$4.997 Days
  • 1 Year Ad-Free3 Days trial$5.991 Year
  • Calculate Faster, AI, & No Ads3 Days trial$5.997 Days
  • 1 Month Premium Trial1 Month trial$5.997 Days
  • Math Solver/Full Access/No Ads$5.997 Days
  • 6 Months Premium Access7 Days trial$8.996 Months
6 purchases

calculator HD⁻

Subscriptions2
  • auto season vip$2.993 Months
  • 连续年会员$3.991 Year
One-time4
  • 深色主题$0.99
  • 周会员$0.99
  • 高级会员$14.99
Show 1 more
  • 超级会员$14.99

Questions

Is Calculator₊ free?
Calculator₊ is free to download, with in-app purchases available.
Is calculator HD⁻ free?
calculator HD⁻ is free to download, with in-app purchases available.
Which has better reviews, Calculator₊ or calculator HD⁻?
Calculator₊ is rated higher. Calculator₊ averages 4.7 out of 5 from 1.7M ratings, while calculator HD⁻ averages 4.5 from 2.5K ratings.
Do Calculator₊ or calculator HD⁻ have ads?
Both Calculator₊ and calculator HD⁻ show ads.
Which is updated more often, Calculator₊ or calculator HD⁻?
Calculator₊ ships an update every 3 weeks, and calculator HD⁻ every 3 months. Most recently, Calculator₊ was updated on November 12, 2026 and calculator HD⁻ on November 11, 2026.

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