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Itrium

Hindsight

Keep the last few minutes, so you don't have to.

Someone walks up and says something you'll want to check later, but it's over before you'd think to record. Hindsight was already listening: it keeps the last few minutes in memory and forgets anything older. When it matters, you save it.

Hindsight's main window: recording from the microphone, holding the last hour and 14 minutes, with two saved clips

Go back to when it started

Choose… opens a timeline of everything Hindsight holds, up to three hours. Quiet stretches show where a conversation began: drag the start and the end there, listen to check, and save exactly that.

The timeline: an hour and 17 minutes held, a quiet stretch a third of the way in, and the 44 minutes after it chosen

From the menu bar

Save the last minute, 5 minutes or 15 minutes, or open the timeline, without opening a window. A shortcut you choose saves from any application.

The menu bar menu: what Hindsight is recording from, how much it holds, and the ways to save

Pick your colors

Rhodonite, Itrium's own, or one of three Catppuccin flavors, each in light and dark. Every palette meets level AA contrast, which we check before any of them ships.

Hindsight's main window in the Catppuccin Mocha palette

The details

  • In memory only

    Nothing is written to disk until you save a clip. Until then, the last few minutes exist only in memory.

  • Encrypted while it waits

    The buffer is encrypted with a key that exists only while Hindsight runs, so even if your system swaps memory to disk, it writes scrambled bytes.

  • Never leaves your computer

    Hindsight makes no network requests. Clips are ordinary audio files in a folder you choose.

  • Up to three hours

    Keep 15 minutes or up to three hours. Three hours takes about 22 MB of memory and a little over one percent of a processor core.

  • A fallback microphone

    Record from your phone or a headset; if it disconnects or goes quiet, Hindsight switches to a fallback and back again by itself.

  • Your clips, playable anywhere

    Play clips inside Hindsight, or export them as WAV for any other application. Delete them for good when you no longer need them.

  • Starts when you log in

    Hindsight can start quietly in the menu bar when you log in. It's off until you turn it on, since starting means recording.

Recording people

In many places, recording a conversation needs the consent of everyone in it. Hindsight shows that it's recording, and your system shows its microphone indicator, but whether recording is allowed where you are is up to you. Let the people around you know.

Download

Your computer will ask you to confirm, once

Signing certificates cost money every year, and Hindsight is free, so it isn't signed by a verified developer yet. It's built from its public source code, on GitHub's machines, but your system can't know that, so it asks the first time. It will also ask whether Hindsight may use the microphone.

These run on a computer, not on a phone. Open this page on your computer to download.

  1. macOS

    One download for every Mac, Apple silicon or Intel.

    Download for Mac

    The first time you open it: Open Hindsight once and click Done on the warning. Then open System Settings, go to Privacy & Security, and click Open Anyway next to the message about Hindsight.

    Other versions

    Or with Homebrew (click the command to select it):

    brew install itriumid/tap/hindsight
  2. Windows

    Windows 10 or 11.

    Download for Windows

    The first time you open it: When SmartScreen says "Windows protected your PC", click More info, then Run anyway.

    Other versions
  3. Linux

    Debian, Ubuntu, Fedora, openSUSE and the rest.

    Download .deb

    The first time you open it: No warning. For the AppImage, make it executable first: chmod +x, then run it.

    Other versions

The .msi installers, portable Windows executables and every earlier version are on the releases page. See all releases Source code

Everything we make for free stays free: no hidden upsell, no account wall and no advertisements. It doesn't collect, track or sell anything, and it's open source, so you can check.