Fast, sleek menu bar calculator. Standard, Scientific, and Programmer modes — now with full keyboard support. One click, no Dock clutter.
Jr. Calc is a fast, lightweight calculator that lives right in your Mac's menu bar. Click the icon, get your answer, done — no Dock icon, no clutter, no separate window taking up space on your screen.
THREE MODES IN ONE APP
Standard
Clean, simple arithmetic for everyday calculations — addition, subtraction, multiplication, division, with a clear, easy-to-read display.
Scientific
Trigonometric functions (sin, cos, tan), logarithms, powers, roots, factorial, the constants π and e, memory keys (M+, M−, MR, MC), and a DEG/RAD toggle for angle calculations.
Programmer
Switch between Binary, Octal, Decimal, and Hexadecimal with a live multi-base readout. Includes AND, OR, XOR, NOT, and bit-shift operations for quick low-level math.
KEYBOARD FRIENDLY
Type directly — no clicking required. Numbers, operators, Enter for equals, Backspace, and Escape to clear all work exactly as you'd expect. Scientific mode adds quick letter shortcuts for common functions.
BUILT FOR macOS
Jr. Calc automatically matches your system's Dark or Light appearance and your accent color — no settings to configure, it just fits in.
A calculator that's actually quick to reach, and capable enough for real work — not just basic arithmetic.
This app hasn’t received enough ratings or reviews to display an overview.
Works as Expected
NissanSkylinePDX
It's not the most elegant looking app and can definitely use a face lift/re-design but it does the job. It would be nice if there were options to customize things like decimal placement and size. Also the decimal point is actually a comma so you need to press that instead of the period key on your keyboard or it won't work.
Developer Response
Version 1.2 fixes the issue— Jr. Calc now lives cleanly in your menu bar with a clear Quit option always available. This update also adds Scientific and Programmer calculator modes, plus full keyboard input support.
This app does NOT WORK!
perfidia1022
Please avoid downloading this app. It doesn’t work, nor can you put it in the trash, because there is no way to close it. I believe there is a bug in it which makes it difficult to close. Jr. Calc Support doesn’t work either. It has no place to get help for this app.
Developer Response
Version 1.2 fixes the issue where the app couldn't be properly closed — Jr. Calc now lives cleanly in your menu bar with a clear Quit option always available. This update also adds Scientific and Programmer calculator modes, plus full keyboard input support.
thats really Jr.
polystr
Easy and fast access with improved version its so efficient!
worst calculator I've seen.
Sidlish7
Numbers on keyboard don't work, must use mouse to click. The digits are written in black over a black background so they're invisible unless you highlight them. Bad layout visually (numbers not in a normal calculator layout).
Developer Response
Version 1.2 fixes all the issues — Jr. Calc now lives cleanly in your menu bar with a clear graphs. This update also adds Scientific and Programmer calculator modes, plus full keyboard input support.
Version 1.2 adds Scientific and Programmer calculator modes, full keyboard input support, and refined dark/light mode theming throughout the app.
Version 1.2
The developer, ERKAN VOLKAN, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
