# Calculator⁻

> Best hand calculator

Canonical page: [https://chrome-stats.com/d/id1327796464](https://chrome-stats.com/d/id1327796464)

## Overview

- **ID:** `id1327796464`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** UniCom Technology
- **Category:** Utilities
- **Rating:** 4.40 / 5 (3,610 ratings)
- **Version:** 1.13
- **Last updated:** 2025-03-12
- **First published:** 2018-01-05
- **Size:** 3.69 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/calculator/id1327796464)
- **Website:** [https://apps.matrix-soft.org](https://apps.matrix-soft.org/)
- **Privacy policy:** [https://www.matrix-soft.org/privacy\_policy.htm](https://www.matrix-soft.org/privacy_policy.htm)

## Description

Calculator⁻ is a simple, easy-to-use Chrome extension designed for quick arithmetic on any page. It supports basic operations: addition, subtraction, multiplication, division, and percent, with memory recall to store results.

Customize colors, enable touch sounds, and access past calculations. This lightweight calculator is especially useful for students and schoolchildren who need fast, distraction-free math while browsing.

## Rankings

- #31,428 — Overall
- #54 — calculator

## Review summary

User reviews are mixed: many praise ease of use, decimals, and the vintage UI, but recurring decimal bugs and faulty percentage calculations render it unreliable. Ads and rating prompts irritate users, and the keypad layout plus missing backspace add to usability frustrations. Overall, the app has potential but core math accuracy and UX issues limit broad satisfaction.

### Pros

- Easy to use and intuitive.
- Supports decimal numbers.
- Visually appealing vintage look and logo.
- Can reuse recurring numbers without re-entering.
- Overall positive performance for some users.

### Cons

- Decimal handling bugs: decimals are not recognized or are misinterpreted.
- Incorrect/inconsistent percentage calculations (e.g., 100 × 50%).
- Intrusive pop-up ads and prompts.
- Nonstandard keypad layout and missing backspace (unusual button positions).
- Persistent rating prompts that cannot be disabled.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1327796464)