---
title: "SigiCalc - Reviews, Revenue and Downloads in Israel | Apple App Store"
description: "SigiCalc is a fast, clean RPN calculator that draws your functions.  Enter a calculation the RPN way – numbers first, then the operation – and as soon as your expression contains X, tap Graph to see i"
---

# SigiCalc — Israel
> RPN Graphing Calculator

![SigiCalc App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/09/43/67/094367b6-dc5d-0995-31d7-37b044ba0766/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Siegwart Software](https://apptail.io/developer/siegwart-software-AcQb)
**Category:** Education
**Rating:** 5.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** com.siegware.sigicalc
**Store:** Apple App Store
**Country:** Israel
**Version:** 3.0 (released 2026-08-29)
**Original Release:** 2012-05-10
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/il/app/app/id522503444)
**AppTail Page:** [https://apptail.io/app/sigicalc-lRcf/israel](https://apptail.io/app/sigicalc-lRcf/israel)

## SigiCalc Description
SigiCalc is a fast, clean RPN calculator that draws your functions.

Enter a calculation the RPN way – numbers first, then the operation – and as soon as your expression contains X, tap Graph to see it plotted. No equals key, no parentheses, no fuss.

REAL RPN
• Classic stack-based entry with Enter, Undo and All Clear
• Keys light up only when the stack has enough values – you can't make an invalid entry
• The display shows your result, the whole expression in normal notation and the raw stack

LIVE FUNCTION GRAPHS
• Use X as a variable and plot the result instantly
• Pinch to zoom, drag to pan, tap to zoom in, double-tap to reset
• Touch and hold to read the exact x / y value on the curve
• Discontinuities like tan(x) or 1/x are drawn correctly – no misleading vertical lines

SCIENTIFIC FUNCTIONS
sin, cos, tan and their inverses, natural log, square, square root, reciprocal, sign change and π

DESIGNED FOR TODAY'S DEVICES
• Light and Dark Mode, portrait and landscape
• iPad: calculator and live graph side by side
• Smooth animations and haptic feedback

PRIVATE BY DESIGN
SigiCalc works entirely on your device. No account, no network, no ads, no tracking.

Example: X ↲ X sin × plots x · sin(x).

What changed versus your text and why:
- Leads with a benefit, not a category: "draws your functions" is the hook; "simple and practical graphical" told the reader nothing they'd search for.
- Explains RPN in one sentence for people who don't know it, since that's the biggest reason someone bounces.
- Bulleted feature blocks — App Store descriptions are skimmed, and the capitalised headings scan well in the store's plain-text rendering.
- Adds Dark Mode / iPad / privacy, all of which are new in 3.0 and are things reviewers and users look for.
- Fixed "polish" → "Polish" and "equation" → "expression" (you plot expressions, not equations).

## SigiCalc Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/6a/4b/11/6a4b113d-68e0-ded4-9395-e3fddbc44999/pr_source.png/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/00/a8/cf/00a8cfa7-fff0-66f6-663c-fad0c92c2c72/pr_source.png/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/bc/d3/73/bcd37344-cbd2-9b2e-c201-aec5c8f4588e/pr_source.png/640x960.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/48/f8/b0/48f8b0da-52b7-9cec-ae30-7d20672f90c7/mzm.jsztwxey.png/640x960.png)

## SigiCalc Rating Breakdown in Israel
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)





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## SigiCalc Available In
- [Switzerland](https://apptail.io/app/sigicalc-lRcf/switzerland)
- [Israel](https://apptail.io/app/sigicalc-lRcf/israel)
- [United States](https://apptail.io/app/sigicalc-lRcf/united-states)
- [United Kingdom](https://apptail.io/app/sigicalc-lRcf/united-kingdom)
- [Belgium](https://apptail.io/app/sigicalc-lRcf/belgium)
- [Brazil](https://apptail.io/app/sigicalc-lRcf/brazil)
- [Belarus](https://apptail.io/app/sigicalc-lRcf/belarus)
- [Chile](https://apptail.io/app/sigicalc-lRcf/chile)
- [Colombia](https://apptail.io/app/sigicalc-lRcf/colombia)
- [Czechia](https://apptail.io/app/sigicalc-lRcf/czechia)
- [Germany](https://apptail.io/app/sigicalc-lRcf/germany)
- [Denmark](https://apptail.io/app/sigicalc-lRcf/denmark)
- [Algeria](https://apptail.io/app/sigicalc-lRcf/algeria)
- [Egypt](https://apptail.io/app/sigicalc-lRcf/egypt)
- [Spain](https://apptail.io/app/sigicalc-lRcf/spain)
- [Finland](https://apptail.io/app/sigicalc-lRcf/finland)
- [Greece](https://apptail.io/app/sigicalc-lRcf/greece)
- [Croatia](https://apptail.io/app/sigicalc-lRcf/croatia)
- [Hungary](https://apptail.io/app/sigicalc-lRcf/hungary)
- [Indonesia](https://apptail.io/app/sigicalc-lRcf/indonesia)
- [Ireland](https://apptail.io/app/sigicalc-lRcf/ireland)
- [India](https://apptail.io/app/sigicalc-lRcf/india)
- [Italy](https://apptail.io/app/sigicalc-lRcf/italy)
- [Japan](https://apptail.io/app/sigicalc-lRcf/japan)
- [South Korea](https://apptail.io/app/sigicalc-lRcf/south-korea)
- [Kuwait](https://apptail.io/app/sigicalc-lRcf/kuwait)
- [Malaysia](https://apptail.io/app/sigicalc-lRcf/malaysia)
- [Netherlands](https://apptail.io/app/sigicalc-lRcf/netherlands)
- [Norway](https://apptail.io/app/sigicalc-lRcf/norway)
- [New Zealand](https://apptail.io/app/sigicalc-lRcf/new-zealand)
- [Philippines](https://apptail.io/app/sigicalc-lRcf/philippines)
- [Pakistan](https://apptail.io/app/sigicalc-lRcf/pakistan)
- [Poland](https://apptail.io/app/sigicalc-lRcf/poland)
- [Portugal](https://apptail.io/app/sigicalc-lRcf/portugal)
- [Romania](https://apptail.io/app/sigicalc-lRcf/romania)
- [Russia](https://apptail.io/app/sigicalc-lRcf/russia)
- [Saudi Arabia](https://apptail.io/app/sigicalc-lRcf/saudi-arabia)
- [Sweden](https://apptail.io/app/sigicalc-lRcf/sweden)
- [Thailand](https://apptail.io/app/sigicalc-lRcf/thailand)
- [Türkiye](https://apptail.io/app/sigicalc-lRcf/turkey)
- [Taiwan](https://apptail.io/app/sigicalc-lRcf/taiwan)
- [Ukraine](https://apptail.io/app/sigicalc-lRcf/ukraine)
- [United Arab Emirates](https://apptail.io/app/sigicalc-lRcf/united-arab-emirates)
- [Vietnam](https://apptail.io/app/sigicalc-lRcf/vietnam)
- [Austria](https://apptail.io/app/sigicalc-lRcf/austria)
- [Australia](https://apptail.io/app/sigicalc-lRcf/australia)
- [Azerbaijan](https://apptail.io/app/sigicalc-lRcf/azerbaijan)

---

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