---
title: "CITIZEN Calculator — App Overview"
url: https://marlvel.ai/intel-report/tools/citizen-calculator
category: Tools
developer: Everyday Calculation Apps
platforms: ios, android
rating: 4.3 (57.1K ratings)
pricing: free
report_level: overview
generated: 2026-04-16
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app serves as a digital recreation of the CITIZEN CT-555N, prioritizing functional parity with the classic hardware model.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Tools |
| Rating | 4.3 ★ (57.1K) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 2.0.6 |
| Latest Version (Android) | 2.3.3 |
| Developer | Everyday Calculation Apps |

<!-- SECTION: Summary -->
## What is CITIZEN Calculator?

CITIZEN Calculator is a utility app that replicates the functionality of the classic CITIZEN CT-555N desktop calculator. It provides a suite of specialized business and accounting tools, including tax and mark-up calculations, for users requiring a familiar physical calculator interface on a mobile device.

<!-- SECTION: Key Features -->
## Key Features

- **Check & Correct / Replay**: Allows users to review and edit previous calculation steps.
- **Business Calculations**: Includes dedicated functions for Price Mark-Up & Down and Tax calculations.
- **Memory and Constant Calculation**: Supports standard memory storage and constant math operations for repetitive tasks.

<!-- SECTION: Target Audience -->
## Who is it for?

Professionals and students who require a traditional, feature-rich calculator for accounting and business mathematics.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/citizen-calculator-app/id1541602534?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=com.everydaycalculation.citizencalculator&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/tools/citizen-calculator)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/tools/citizen-calculator).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*