Comparison

Calcbot 2 vs Numerical³

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

Head to head
About

Calcbot 2

This app offers a smart calculator with a history tape and expression view to track your calculations. It includes over 500 unit conversions and scientific functions, with an Apple Watch extension for on-the-go use.

Highlights
  • History tape for saved calculations
  • Expression view for typed input
  • Over 500 unit conversions
  • Apple Watch extension
  • Scientific functions in landscape
  • Favorites for instant access
Features
Read full description

Calcbot is an intelligent calculator and unit converter for the rest of us. Featuring an easy-to-read history tape, expression view, intuitive conversion, and much more! History Tape*. Every calculation you enter gets saved to the history tape. Refer to calculations later or send them right back to your current calculation. Expression View. Calcbot's original expression view allows you to see everything you have typed so you'll never forget what you entered or miss a typo. Apple Watch Extension. Perform basic calculations, conversions, calculate tips, and split bills right from your Apple Watch. Conversion*. Convert any of your calculations with over 500 units across 22 different categories including auto-updating currency rates. Favorites. Fave a calculation and get instant access to its result via the Favorites Key. No more cryptic memory keys. Scientific Functions. Rotate your device into landscape mode to gain access to common scientific functions. Constants. Get instant access to scientific constants like Pi, Atomic Mass, or add your own*. Round for Currency. Have all of your results rounded to two decimal places. Sounds & Animations. Beautiful custom animations and sound effects provide positive feedback and an enjoyable experience while performing calculations. * In-App purchase required.

About

Numerical³

A powerful and beautifully designed calculator app that offers advanced scientific functions, automatic bracket handling, and a unique no-equals button interface. It integrates seamlessly with iOS features like widgets and keyboards for calculations anywhere.

Highlights
  • No equals button interface
  • Automatic bracket handling
  • Full scientific keypad
  • Today Widget integration
  • Numerical² Keyboard for any app
  • Equation editing
  • Customizable themes
Features
Read full description

Numerical³ is still the calculator without equal. The first Numerical shipped in 2014—v3 brings long-requested improvements and the same focus on delightful, minimalist utility apps.MAC TOONumerical runs natively on macOS: multiple windows, tabs, resizing, desktop widgets, full keyboard support, and synced history. Download it on the Mac App Store.WIDGETSLock screen and Home Screen widgets—modernized on iPhone and iPad.THEMESBrand-new neo-morphic themes alongside our most popular picks—each with light and dark variants that follow your iOS appearance settings. Use the Theme Picker to preview them all.ICONSTheme Home Screen icons match iOS 26 with glass effects, Dark Mode, and tints.HISTORYYour equations stay visible on screen—above the keyboard on iPhone (portrait) and to the side on iPad and Mac. iCloud keeps history in sync across iPhone, iPad, and Mac.KEYBOARDSExternal keyboards are fully supported on iPhone, iPad, and macOS—including the shortcuts you expect.SOUND FXSounds and clicky feedback on iPhone, iPad, and Mac. Haptics on iPhone.14+ LANGUAGESThe entire app is localized in 14+ languages—including Japanese, Chinese, Korean, and Russian—with international digits and formats. Missing yours? Let us know.Mana Machines—Numerical³ and upcoming apps from a studio focused on delightful, minimal, human-centered utilities. More on the way.Questions or feedback: manamachineventures@gmail.comDeveloped by Andrew J Clark. Designed by Andrew J Clark & Alex Vanderzon.

Screenshots

Calcbot 24 screens
Numerical³4 screens

Verdict

The call

The clearest difference is in-app purchases: Numerical³ at none against Calcbot 2's 1. Numerical³ also leads on update cadence (every 2 weeks vs every 2 months) and review sentiment (75% vs 60%). Calcbot 2's advantage is ratings volume (11K vs 1.3K) and iOS requirement (15.0 vs 18.0). On price, rating, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calcbot 2 sells 1 one-off in-app purchase. Numerical³ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Calcbot 2 against 4.8 for Numerical³. That said, the two scores are not equally well evidenced: Calcbot 2 has 11K ratings behind it against 1.3K, so its average is the more settled of the two. Written reviews are what separate them: 60% of Calcbot 2's written reviews are positive against 75% of Numerical³'s.

UpkeepUpdate frequency

Calcbot 2 ships an update every 2 months, Numerical³ every 2 weeks. The most recent releases landed on September 30, 2026 and September 27, 2026 respectively.

Scorecard6 real differences · 4 level
Calcbot 2 versus Numerical³: the parameters behind the verdict, then further details
ParameterCalcbot 2Numerical³
PriceFreeFree
Rating4.7 (11K ratings)4.8 (1.3K ratings) — better
Positive reviews60.1% of reviews75.4% of reviews — better
Number of ratings11K — better1.3K
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Mac
Requires iOS15.0 — better18.0
Further details — not scored
Size15 MB113 MB
Age rating4+4+
DeveloperTapbotsAndrew J Clark

Customer experience

Calcbot 2

All ratings11,114 ratings
Positive92.8%
Neutral2.6%
Negative4.6%
Written reviews652 reviews
Positive60.1%
Neutral8.9%
Negative31.0%

Numerical³

All ratings1,338 ratings
Positive95.1%
Neutral2.1%
Negative2.8%
Written reviews487 reviews
Positive75.4%
Neutral9.4%
Negative15.2%

User reviews

Calcbot 2

From 11K App Store ratings

What we love

  • 💻 Flexible calculator & conversions
  • 📝 Comprehensive history tape
  • 🎨 Customizable themes and icons
  • ⌚️ Apple Watch app
  • 🔢 Supports advanced calculations

Room to improve

  • ⚠️ Lack of updates and support
  • 🚫 Removing free features behind paywall
  • 🐞 Bugs and glitches (history tape issues, crashing)
  • 🕰️ Slow loading times
  • 🤔 Unintuitive interface for conversions

Numerical³

From 1.3K App Store ratings

What we love

  • 🚀 Great app
  • 👍 Simple and intuitive
  • 👍 Clean and beautiful design
  • 🚀 Fast and responsive
  • 👍 Customizable themes

Room to improve

  • 🐛 Bugs and glitches (unresponsive keys, calculation errors)
  • 🔍 Lack of advanced functions (scientific, unit conversion)
  • 💡 Needs more theme options
  • 💡 Needs iPad support
  • 💡 Needs widget support

Bugs and requests

Calcbot 2

Reported bugs

4 issues
  • History tape not recording all calculations
  • Conversion settings not syncing to Apple Watch
  • App crashing on launch for some users
  • Blank app icons after iOS updates

Requested features

5 requests
  • Dark mode option
  • Widgets for quick access
  • More currency and unit conversions
  • Improved Apple Watch integration
  • Ability to edit calculations in history tape

Numerical³

Reported bugs

3 issues
  • Unresponsive keys
  • Calculation errors
  • Crashes on startup

Requested features

5 requests
  • Add scientific functions (square root, trigonometry, etc.)
  • Implement an equals button
  • Add more theme options
  • Develop an iPad version
  • Bring back widget support

In-app purchases

1 purchases

Calcbot 2

One-time1
  • Calcbot Pro$1.99
None

Numerical³

No in-app purchases

Questions

Is Calcbot 2 free?
Calcbot 2 is free to download, with in-app purchases available.
Is Numerical³ free?
Numerical³ is free to download, with no in-app purchases.
Which has better reviews, Calcbot 2 or Numerical³?
Numerical³ is rated higher. Calcbot 2 averages 4.7 out of 5 from 11K ratings, while Numerical³ averages 4.8 from 1.3K ratings.
Do Calcbot 2 or Numerical³ have ads?
Neither Calcbot 2 nor Numerical³ shows ads.
Which is updated more often, Calcbot 2 or Numerical³?
Calcbot 2 ships an update every 2 months, and Numerical³ every 2 weeks. Most recently, Calcbot 2 was updated on September 30, 2026 and Numerical³ on September 27, 2026.

Other comparisons