Comparison

DayCalc vs PerfectCalc

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

Head to head
About

DayCalc

This app combines a powerful calculator with a comprehensive unit converter. It offers standard, scientific, and fraction calculations, along with over 600 units across 20 categories. Users can customize units, add notes to calculations, and enjoy a visually appealing interface with multiple themes.

Highlights
  • Standard, scientific, and fraction calculator
  • Live voice calculator
  • Add notes to calculations
  • Over 600 units in 20 categories
  • Custom unit creation
  • Automatic currency exchange rate updates
  • 50+ themes and dark mode support
Features
Read full description

DayCalc is an easy to use, beautifully packaged calculator and Unit Converter, includes standard, scientific and fractions calculator, best calculator for your iPad, iPhone and Apple Watch! Calculator: - Live voice calculator - Add notes to history of your calculations, and you can share - Choose between a basic calculator or scientific calculator with more than 30 scientific operations - Use both calculators in portrait or landscape mode (both iPhone and iPad), and split screen support for iPad - Auto adjust height of the history list, no matter how long the calculation process can be displayed in full - Allows locking of calculation history, cannot be deleted and modified after locking - Full watchOS 4 and later support - Support iOS 9 and later spotlight search - Support Dark Mode Unit Converter: - Over 600+ units in 20 categories. - Allows you to add your own unit data, make your own unit converter that meets all your requirements. - Support more than 150 kinds of currency, conversion exchange rate automatic updates - The simplest way to create and use favorite lists. - Add the constant value of your frequently used, it can easily and quickly reused. - Flexible search feature that lets you quickly find what you want the unit and automatically saves your search history. Basic functions: - 50+ beautiful themes for you to choose - View and edit a history of your calculations on the History Panel - Multiple Button sounds, and button sound is mutable URL schemes: HCDayCalc:// Download it now and feel of this calculator is how classic

About

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.

Highlights
  • 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
Features
Read full description

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

DayCalc4 screens
PerfectCalc4 screens

Verdict

The call

DayCalc and PerfectCalc are too close to call on the numbers: across 10 compared parameters — price, rating, review sentiment and ratings volume among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. DayCalc sells 4 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for DayCalc against 4.7 for PerfectCalc. Both are backed by a comparable volume of ratings — 126 and 342 respectively. Written reviews are what separate them: 88% of DayCalc's written reviews are positive against 94% of PerfectCalc's.

UpkeepUpdate frequency

DayCalc ships an update every 3 weeks, PerfectCalc fortnightly. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

ScorecardNo meaningful differences
DayCalc versus PerfectCalc: the parameters behind the verdict, then further details
ParameterDayCalcPerfectCalc
PriceFreeFree
Rating4.7 (126 ratings)4.7 (342 ratings)
Positive reviews87.7% of reviews94.1% of reviews — better
Number of ratings126342 — better
Update frequencyEvery 3 weeksFortnightly — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS13.013
Further details — not scored
Size170 MB76 MB
Age rating4+4+
Developer良峰 侯明星 王

Customer experience

DayCalc

All ratings126 ratings
Positive94.4%
Neutral1.6%
Negative4.0%
Written reviews155 reviews
Positive87.7%
Neutral3.9%
Negative8.4%

PerfectCalc

All ratings342 ratings
Positive93.3%
Neutral2.9%
Negative3.8%
Written reviews85 reviews
Positive94.1%
Neutral1.2%
Negative4.7%

User reviews

DayCalc

From 126 App Store ratings

What we love

  • 👍 Easy to use and convenient
  • 💯 All-in-one calculator with multiple functions
  • ✨ Customizable themes and backgrounds
  • 🧮 Supports fraction calculations
  • 📈 History and memory functions available

Room to improve

  • ⚠️ Ads can be intrusive
  • 🐛 Some users experience update issues
  • ❌ Weight conversions not always available
  • 🔊 Unwanted sound effects
  • ❓ Ad-free cost unclear for cross-platform

PerfectCalc

From 342 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Powerful features
  • 💡 Useful history function
  • 🔒 No ads
  • 👍 Clean interface

Room to improve

  • 🐛 Forced 5-star review for history function
  • 🐛 Odd language issue with copied calculations

Bugs and requests

DayCalc

Reported bugs

16 issues
  • Update issues, stuck in update loop
  • Cannot install after removal
  • Weight conversion not showing
  • Keys making sound unexpectedly
  • App not working after professional version update
Show 11 more
  • App crashes after update
  • Stuck on updating forever
  • Calculator results in errors (e.g., 1000*10%)
  • App keeps running in the background, draining battery
  • Cannot change themes due to network error
  • Ads still appear after purchasing ad removal
  • App not opening after install
  • M+ M- bug
  • Text/numbers/symbols have underlines
  • Standard version limits typing to four digits
  • App not starting on Apple Watch

Requested features

10 requests
  • Add Pi button
  • Improve currency conversion navigation
  • iCloud support for syncing across devices
  • Add background running feature
  • Ability to change app icon
Show 5 more
  • Add more theme options
  • Allow notes to show on the main screen
  • Email entire calculation history
  • Change layout (move function buttons)
  • Allow sound to be enabled in silent mode

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

4 purchases

DayCalc

One-time4
  • Constants Pack$0.99
  • Custom Unit Pack$1.99
  • Remove Ads$3.99
Show 1 more
  • Complete Pack$4.99
1 purchases

PerfectCalc

One-time1
  • Calculator Pro$12.99

Questions

Is DayCalc free?
DayCalc is free to download, with in-app purchases available.
Is PerfectCalc free?
PerfectCalc is free to download, with in-app purchases available.
Which has better reviews, DayCalc or PerfectCalc?
DayCalc and PerfectCalc are both rated 4.7 out of 5 on the App Store, from 126 and 342 ratings respectively.
Do DayCalc or PerfectCalc have ads?
Both DayCalc and PerfectCalc show ads.
Which is updated more often, DayCalc or PerfectCalc?
DayCalc ships an update every 3 weeks, and PerfectCalc fortnightly. Most recently, DayCalc was updated on September 21, 2026 and PerfectCalc on September 17, 2026.

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