The best calculator apps, according to hackers
7 calculator apps recommended in Hacker News comments over the past year, ranked by how many separate people recommend each one.
All calculator apps
- SpeedCrunchA fast, keyboard-driven desktop calculator that people use for scratchpad equations, bit operations and radix conversion, with a clean, free design.13recommend
- Windows CalculatorWindows' built-in calculator, liked by people who prefer the classic Windows 7 version. Common caveat: the newer version is slow to launch and feels sluggish.9recommend
- QalculateFree, very powerful calculator that people reach for daily, especially through KRunner integration on KDE.9recommend
- Can I Run AI locally?Shows which local AI models your hardware can run. Critics say results are often inaccurate for some hardware, and the dark theme is hard to read.9recommend
- Free42 by Thomas OkkenA free emulator of the HP-42S RPN scientific calculator that runs on phones, favored by people who like RPN calculators.7recommend
- iPhone Calculator appFree built-in iPhone calculator; people note its history and correct keypresses. Critics cite hidden history, lag on fast taps and wrong results.6recommend
- Math NotepadA free browser calculator that keeps your expressions after refreshing or navigating away. The most common caveat is that it handles large numbers poorly.6recommend