# SiCal Watch Calculator — faster x better + customizable

> Customizable scientific and standard calculator for Apple Watch and iPhone. (iPhone/iPad app by Kai Schamuhn.)

- Source: https://appshunter.io/ios/app/sical-watch-calculator/id1451448652 (this page in markdown: same URL + `.md`)
- Developer: [Kai Schamuhn](https://appshunter.io/developer/1347522453)
- Category: Utilities, Productivity
- Price: $0.99
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 36 MB
- Languages: English, German
- Released: 2019-05-31
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sical-watch-calculator/id1451448652/reviews.md

## What is SiCal Watch Calculator?

An extremely powerful standard and scientific calculator for the Apple Watch.  
Modern, customizable and incredibly versatile. Easy to use.

• The keys of the calculator can be reassigned as needed.
• And an intelligent cursor helps you to edit your calculation quickly. 
• On the Watch not only the last entered number is displayed, but comprehensibly the complete calculation path as text. Full editable on the Watch!
• The clever display allows a perfect representation, even with infinitely long entries on the Watch.
• Make the calculator even better. Create your own functions and constants! You can assign them on any key. Create your own professional calculators with your formulas!
• History - old calculations can be recalled and reused at any time.
• Calculators with new key assignments can be saved completely and can be recalled including the old calculations at any time!
• Swipe gestures can be assigned to your own actions.
• Many different calculator styles and icons selectable.
• Perfect teamwork. It is possible to send the saved calculators to the iPhone, organize them there and share them with other users of this app ...

… and so much more! 

Examples of what you can assign to the keys ...
• self created functions and constants !!!
• sin(), cos(), tan(), asin(), acos(), atan()
• sinh(), cosh(), tanh(), asinh(), acosh(), atanh()
• x^y, x^2, x^3, 2^x, e^x, √, ³√,%, gamma Г, n!, erf(), erfc(), rnd, rand(), abs()
• ln(), log(), log2()
• ceil(), floor(), trunc()
• % key - behavior under 'Settings -> Advanced' customizable at any time!
• Constants: π, e 
• memory functions: 'history mode', MR, MS, MC, M+, M-
• further special functions or characters: EE, 2nd, brackets : ( , ) 
• '=SMS' sends the calculation with solution as a message to friends and colleagues.
• φ (PHI) - module to create own functions/constants
• TIP - tip calculator
• CST - use table with many predefined constants

## Key features

- Customizable key assignments
- Intelligent cursor for editing
- Full calculation path display
- Create custom functions and constants
- Save and recall calculator layouts
- Swipe gesture assignments
- Send calculations via SMS

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/sical-watch-calculator/id1451448652/reviews.md

### 5/5 — This deserves to be a classic

*2022-03-15*

I'm always looking for apps that work well or can be customised to do so. This is just the latter. It's just such a joy to use. Well thought through, flexible, customisable and uses simple actions such as short/long press and swipe to delete or move the cursor. It deserves popularity.

## Frequently asked questions about SiCal Watch Calculator

### What devices does SiCal Watch Calculator support?

SiCal Watch Calculator is available on Apple Watch, iPhone, and iPod. It is designed to provide a powerful calculator experience across these Apple devices.

### How much does SiCal Watch Calculator cost?

SiCal Watch Calculator is a paid app priced at $0.99. This one-time purchase grants you access to all its features without any additional in-app purchases or subscriptions.

### Can I customize the calculator keys in SiCal Watch Calculator?

Yes, the keys of the calculator can be reassigned as needed. You can assign your own functions, constants, and even specific actions like sending an SMS to different keys.

### Does SiCal Watch Calculator have ads?

No, SiCal Watch Calculator is ad-free. You can use the calculator without any interruptions from advertisements.

### How often is SiCal Watch Calculator updated?

The latest version, 2.4.6, was released on December 11, 2022. While specific update frequency isn't detailed, the app has seen regular updates since its release in 2019.

### What is the age rating for SiCal Watch Calculator?

SiCal Watch Calculator has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### Can I save and share my custom calculators with SiCal Watch Calculator?

Yes, you can save your custom calculator layouts, including key assignments and functions. These saved calculators can then be organized on your iPhone and shared with other users of the app.

### What kind of custom functions can I create in SiCal Watch Calculator?

You can create a wide range of custom functions and constants, including trigonometric functions (sin, cos, tan), exponential functions (e^x), roots, factorials, and even user-defined formulas. The 'PHI' module specifically aids in creating these custom functions and constants.

## Version history (last 5 releases)

### 2.4.6 — 2022-12-11

Full support for watchOS 9 and iOS 16
Full support also for the Apple Watch Ultra.
Minor improvements and adjustments.

### 2.4.5 — 2022-11-30

Full support for watchOS 9 and iOS 16
Full support also for the Apple Watch Ultra.
Minor improvements and adjustments.

### 2.4.4 — 2022-11-15

Full support for watchOS 9 and iOS 16
Full support for Apple Watch Ultra.
New iOS and watchOS Icon.

If the % key is used for the first time, it will be asked once how % should behave in the future.
This can be changed at any time under 'Settings -> Advanced'.
The default calculator has been adapted to the new possibilities.

At least watchOS 6 and iOS 13 is required for this update.

General improvements made.

### 2.4.3 — 2021-10-22

General improvements made.

### 2.4.2 — 2021-10-20

Full support for watchOS 8 and iOS 15.

Assign '=SMS' to a key and send your calculation directly through the Messages app on the Apple Watch.
(charges from your network provider may apply).
With a double press on the Crown you can switch back to SiCal Watch.

Added separator under Settings -> Advanced -> Separator.
Last number input and result can be displayed with thousands separator (narrow space). Separators are removed again in cursor mode.

On the iPhone, a new sample calculator 'Extended Default Settings' has been added.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*