Calculator 3.0 vs DayCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator 3.0
A free, redesigned calculator app offering a simpler, more intuitive experience across Apple devices. Features include customizable themes, advanced scientific functions, and unit conversion, all optimized for various screen sizes and interactions.
- Customizable themes
- Scientific calculator
- Unit converter
- Tip calculator
- Tally counter
- iPad multitasking support
- Apple Watch complications
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Welcome to Calculator 3.0 for Apple Watch, iPhone, iPad, and iMessage! Frustrated with the ugly and complicated Calculators for iPad, Apple Watch, and Apple TV — Calculator 3.0 was created to provide a better simpler choice....all for Free. The "Original Calculator with Themes for iPad and Apple Watch" is back — Rewritten and redesigned for Apple Watch, iPhone, iPad, and iMessage with Bolder Fonts, iPad Multitasking, Native Watch Support with Complications, and Snappier Performance. Apple Watch The Apple Watch Calculator with Colored Watch Band Themes! Designed for the mobile mathematician with a Scientific Calculator, Tip Calculator, Unit Converter, a Tally Counter, Twenty-Six personalized colored themes for your watch band or style, and... • Force Press (firmly press) on the Calculator to changes themes • Big and bold fonts for readability • Haptic feedback upon button presses • Watch Face Complication support for quick access • Tip Calculator with Digital Crown support • Conversion Calculator with Length, Weight, Volume, Area, and Time units • Counter, Tap to increase or use the Digital Crown for faster input, force press for options • Settings, with option to enable Counter number modular face complication support • Autorotation to Share, when enabled the app rotates when rotating your wrist to show a calculation, tip percentage, unit conversion, or tally number to another person iPhone and iPad • Simple bubble dark interface with Scientific Calculator • iPad Multitasking Support (Landscape and Portrait) • Haptic feedback upon button presses (iPhone 7 and greater) • Gesture Controls, Swipe Up for "Light Mode", Swipe Down for "Dark Mode", Swipe Left to clear the displayed number • 3D Touch Icon — Copy Last Number (iPhone 6s and greater) • Bolder fonts • Tap number to copy • "Drag and Drop" support for iPad, perfect for iPad Multitasking - Tap and hold on the displayed number to select for dragging as text into another app - Drag and Drop text numbers from other apps (Mail, Safari, Notes, etc) over the displayed number area to include the number in the current input iMessage app • Simple Calculator • Tap number to paste into message thread
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.
- 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
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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
Screenshots
Verdict
The clearest difference is ads: Calculator 3.0 at none against DayCalc's shown. Calculator 3.0 also leads on monetization model (free vs free with in-app purchases) and ratings volume (3.7K vs 128). DayCalc's advantage is review sentiment (87% vs 67%). On price, rating, update cadence 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
Both are free to download. Calculator 3.0 sells 3 one-off in-app purchases and DayCalc sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for Calculator 3.0 against 4.7 for DayCalc. That said, the two scores are not equally well evidenced: Calculator 3.0 has 3.7K ratings behind it against 128, so its average is the more settled of the two. Written reviews are what separate them: 67% of Calculator 3.0's written reviews are positive against 87% of DayCalc's.
Calculator 3.0 ships an update fortnightly, DayCalc every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Calculator 3.0 | DayCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3.7K ratings) | 4.7 (128 ratings) — better |
| Positive reviews | 66.7% of reviews | 87.2% of reviews — better |
| Number of ratings | 3.7K — better | 128 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple TV, Apple Watch — better | iPhone, iPad, iPod, Apple Watch |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 170 MB |
| Age rating | 4+ | 4+ |
| Developer | Spencer Brown | 良峰 侯 |
Customer experience
Calculator 3.0
DayCalc
User reviews
Calculator 3.0
From 3.7K App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Smooth performance
- 💡 Useful features (tip calculator, unit converter, tally counter)
- 🎨 Customizable colors/themes
- 🔍 Clear and legible display
Room to improve
- 🐛 Memory function issues
- 🔊 Loud button click sounds
- 🔍 Cropped display on iPad
- 🔍 Blurry graphics
DayCalc
From 128 App Store ratingsWhat 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
Bugs and requests
Calculator 3.0
Reported bugs
3 issues- Incorrect calculation results
- Landscape mode issues
- Crashes after updates
Requested features
4 requests- Add memory function indicator
- Allow disabling of button click sounds
- Optimize layout for iPad
- Improve graphics quality
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 moreShow fewer
- 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 moreShow fewer
- 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
In-app purchases
Calculator 3.0
- a Nice Tip$0.99
- a Generous Tip$2.99
- an Amazing Tip!$4.99
DayCalc
- Constants Pack$0.99
- Custom Unit Pack$1.99
- Remove Ads$3.99
Show 1 moreShow fewer
- Complete Pack$4.99








