Calculator vs PerfectCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator
This comprehensive utility app consolidates numerous calculators for scientific, health, date, and unit conversions. It offers a wide array of tools, from basic arithmetic to complex calculations and timers, all within a single application. No internet connection is required for its built-in functions.
- 33+ diverse calculator functions
- Scientific, health, and date calculators
- Unit and numerical system converters
- Timers and clocks
- Offline functionality
- Mathematical competition game
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This is the App that you need: all calculations in one App !!!! In this App are gathered all the applications that you need to perform almost any calculation: 33 different functions: Numeric Calculators: - 4 Scientific (different functions, buttons sizes, colors, etc ..) - Chemicals - Functional - Conversion numerical systems (comprehensive) - Complex numbers - Random series generator - Prime Numbers Timers - Timer Up&Down - Pomodoro - Countdown - Milliseconds Timer - Sphere Clock - World Clock Health Related Calculators: - Optimal calories you need - Body Mass Index - Analysis of alchool in your body after taking a few drinks - Calories burned after running - Analysis of the composition of the salads that you take Calculators and Unit Conversion Physical: - Unit Converter. (comprehensive) - Temperature Converter - Calculation of the wind chill - 2 Periodic Tables - Resistor Calculator Calculators Dates: - Perpetual calendar (Julian and Gregorian) - Difference between dates - Zodiac sign and Chinese year - Your exact age - Your age in years doggy Other Calculators - Payment of loans and mortgages - Mathematical competition (Great for kids) - Compatibility test for couples - Current population of the earth - Fractal generator - Geographic Coordinates to UTM Converter Now you do not need a lot of applications to perform different calculations. Almost everything you need calculate is in this App!!!! No Wi-Fi connection needed. Built-in data. The app is completely free. Donation to improve and mantein the app will be welcome. Thanks.
PerfectCalc
This app offers both basic and advanced scientific calculations with a user-friendly interface. It allows for real-time editing of calculations, history management, and theme customization.
- Basic and scientific calculations
- Trigonometric and inverse trigonometric functions
- Mathematical functions (abs, ceil, floor, round)
- Real-time calculation editing
- Historical records management
- Bright and dark theme switching
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An all-in-one calculation app that brings together a standard calculator, scientific calculator, and a wide range of practical tools. It supports basic and scientific calculations, fractions, currency conversion, unit conversion, base conversion, BMI, custom formulas, financial calculations, and other everyday needs - all in one app. [CORE FEATURES] Standard & Scientific Calculator Perform addition, subtraction, multiplication, division, percentages, calculations with parentheses, powers, trigonometric functions, inverse trigonometric functions, and more. Access custom formulas directly from the Home screen to reduce repetitive input. Freely edit calculations, move the cursor, and double-tap to select the current number. Fraction Calculator Enter and calculate fractions with results displayed in fractional form - useful for school, exams, and everyday tasks. Currency Converter Convert between multiple currencies, precious metals, and cryptocurrencies for travel, online shopping, investing, and everyday reference. Unit & Base Converters Convert common units and number bases for study, work, programming, and everyday use. BMI Calculator Quickly calculate body mass index for everyday health tracking. Custom Formulas Use built-in formulas or create reusable custom formula templates to make repeated calculations faster. Financial Calculators Calculate compound interest and recurring investments for common financial planning needs. History & Editable Calculations View, favorite, delete, and recalculate previous results. Edit calculations directly, so a typo never means starting over. Light & Dark Mode Switch between light and dark themes. [CONTACT US] Email: kingstar19900516@gmail.com QQ Group: 835604202
Screenshots
Verdict
The clearest difference is ads: Calculator at none against PerfectCalc's shown. Calculator also leads on monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.7). PerfectCalc's advantage is update cadence (every 9 days vs every 4 months) and ratings volume (353 vs 1). On price, in-app purchases 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
Both are free to download. Calculator sells 2 one-off in-app purchases and PerfectCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Calculator holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PerfectCalc has 353 ratings behind it against 1, so its average is the more settled of the two.
Calculator ships an update every 4 months, PerfectCalc every 9 days. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.
| Parameter | Calculator | PerfectCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.7 (353 ratings) |
| Positive reviews | — | 94.1% of reviews |
| Number of ratings | 1 | 353 — better |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.1 | 13 — better |
| Further details — not scored | ||
| Size | 5 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Juan Fullana | 明星 王 |
Customer experience
Calculator
PerfectCalc
Bugs and requests
Calculator
Not enough reviews yet to summarise bugs or requests.
PerfectCalc
Reported bugs
2 issues- Forced 5-star review for history function
- Odd language issue with copied calculations
Requested features
2 requests- Dark mode option
- More customization options
In-app purchases
Calculator
- Donation + 1 Extra day. Thanks$0.99
- No time limit$1.99
PerfectCalc
- Calculator Pro$19.99
