# Calculator

> Scientific calculator with a real parser, history and unit converter. Offline.

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

## Overview

- **ID:** `com.apprise.calculator`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** NACOR s. r. o.
- **Category:** TOOLS
- **Downloads:** 3
- **Version:** 1.0.0
- **Last updated:** 2026-07-15
- **First published:** 2026-07-15
- **Publisher country:** SK
- **Size:** 40 MB
- **Data as of:** 2026-09-03
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.apprise.calculator)
- **Website:** [https://www.nacor.click/](https://www.nacor.click/)
- **Privacy policy:** [https://telegra.ph/Privacy-Policy-07-15-101](https://telegra.ph/Privacy-Policy-07-15-101)

## Description

A clean, fast calculator that actually gets the math right — with a built-in calculation history and a full unit converter. Everything works completely offline.<br><br>Most simple calculators evaluate left to right and give wrong answers. This one uses a real expression parser that respects the correct order of operations and parentheses, so 2 + 2 × 2 = 6 (not 8) and (2 + 2) × 2 = 8. You also see a live preview of the result as you type.<br><br>KEY FEATURES<br><br>■ Correct math engine<br>• Real order of operations and parentheses<br>• Live result preview while typing<br>• Long expressions scroll horizontally<br>• Clear error messages instead of crashes (division by zero, invalid input, overflow)<br><br>■ Scientific mode<br>• Powers and square roots<br>• sin, cos, tan and inverse trig (asin, acos, atan)<br>• Natural log (ln) and base-10 log<br>• Factorial, constants π and e<br>• Switch between degrees and radians<br><br>■ Smart percent<br>• Works the way phone calculators do: 100 − 90% = 10 and 50 + 10% = 55<br><br>■ Calculation history<br>• Every result is saved automatically with its expression and time<br>• Tap an entry to bring the expression back, or reuse just the result<br>• Delete a single entry or clear everything<br>• History is stored on your device and survives restarts<br><br>■ Unit converter<br>• Length, Mass, Temperature, Area, Volume, Speed, Time and Digital storage<br>• Instant conversion as you type<br>• Temperature uses real formulas for Celsius, Fahrenheit and Kelvin<br>• All conversion factors are built in — no internet needed<br><br>■ Made to feel good<br>• Modern Material Design interface<br>• Light, dark and system themes<br>• Optional vibration on key press<br>• Choose how many decimal places results show (2–10)<br><br>■ Private and offline<br>• 100% offline — no internet permission is requested<br>• No accounts, no ads, no trackers<br>• No data is collected and nothing ever leaves your phone<br><br>Whether you are a student checking homework, a professional running quick conversions, or anyone who just wants a calculator that gives the right answer, this app keeps things simple, accurate and completely private.

## Permissions and access

### Permissions

- `android.permission.VIBRATE`
- `com.apprise.calculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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