SUMM Calculator & Launcher

WonJun Lee

Contains ads

About this app

Calculate quickly, review your history, and open selected apps with numeric shortcuts—all in one privacy-focused Android calculator.

SUMM Calculator combines everyday arithmetic, scientific functions, flexible formatting, and an optional private launcher. Calculations, settings, history, and shortcut mappings stay on your device.

Features

• Fast everyday calculator with live results
• Scientific tools for trigonometry, logarithms, roots, powers, and factorials
• Calculation history you can reopen, share, or delete
• Configurable precision, number separators, themes, and accent colors
• Private app shortcuts with searchable installed-app selection
• Ad-free experience with no analytics or developer data collection

Private launcher

Choose an installed launchable app, assign a 3–8 digit code, and enter that code on the calculator to open your selected app. Installed-app visibility is used only to display the selectable app list and open the app you choose. The app inventory is not uploaded, sold, or shared with the developer.

Shortcut codes are a convenience feature, not an app lock or security boundary. Anyone who can use your unlocked device may be able to use configured shortcuts.

SUMM Calculator does not request internet access. Open-source project pages are handed to Android when you choose them, and Google Play may present its in-app review flow.

Download SUMM Calculator for a focused calculator, useful scientific tools, local calculation history, and optional numeric app shortcuts.

What’s new

Version 2.2.0
• Rebuilt every screen with Jetpack Compose and Material 3
• Refined calculator, scientific tools, history, settings, and About
• Improved private launcher search and shortcut management
• Refreshed the app icon and Google Play graphics
• Added automated calculator and launcher UI tests