SpeedCrunch's developers released version 1.1 on October 20, adding private tabs that discard calculations when closed and don't return at the next launch. For users who keep a calculator open across projects, the change provides a place for temporary arithmetic alongside saved work. The behavior is documented in the version-specific release notes. This article examines those notes and the manual; we haven't tested the application.
SpeedCrunch is a free, open-source scientific calculator for Windows, macOS and Linux. Its project site lists up to 50 digits of precision, user-defined functions and units, and vector and matrix support. These are current capabilities, rather than features all introduced in 1.1.
What a private tab keeps
Choose Session > New Private Tab, or press Ctrl+Shift+N (Cmd+Shift+N on macOS), to open a private session. The manual says these sessions stay in memory and do not automatically save their history, unfinished expressions, variables, functions or units. Closing a private session discards its contents, and closed-tab recovery cannot reopen it.
Copying and explicit export still work. The documented retention rules do not establish a secure-erasure guarantee for those copies.
Session > Keep saves a private session, including its current contents, and makes it ordinary. Session > Make Private... asks for confirmation before deleting an ordinary session's saved JSON file. If deletion fails, it stays ordinary. A private session that cannot be saved during conversion remains private.
The private-tab startup option is off by default. Enabling it opens a fresh private tab while restoring saved ordinary sessions as usual. It does not make the whole workspace private. Opening another window while the application is running still creates an ordinary session.
Copying calculations in 1.1
Version 1.1 adds a single-line option for copying a whole calculation, including all displayed result formats. The manual dates whole-calculation copying to 1.0 and the Calculation as Single Line option to 1.1. The distinction matters if you already use the multiline command.
The release notes also list fixes for undo and redo, copy and paste, and crashes while entering operators in long, wrapped expressions.
If you want temporary calculations alongside saved work, start with New Private Tab and use Keep when you decide to retain a session. Before relying on the conversion and restart rules for important work, check that behavior on your system. This article reports the documentation, not an application test.