Pryzm for desktop · free

Your AI finally remembers you.
On your computer.

Pryzm for desktop, the desktop app of Pryzm Memory, keeps your AI's memory on your machine and gives it to Claude Desktop, Claude Code, Cursor and VS Code. Free for Windows, macOS and Linux, with no account and no sign-up.

Choose your system

WindowsWindows installer (.exe) · 51 MBmacOSMac with Apple silicon (.dmg) · 47 MBLinuxAppImage · 130 MB

Intel Mac? 48 MB.deb package (Debian, Ubuntu) 51 MBOther systems and files

Version 0.1.1, the first public release. Something wrong? Tell us.

All files

Version 0.1.1. Every file is served from pryzm-memory.com; its SHA-256 checksum lets you check it arrived intact.

Windows

  • Windows installer (.exe)51 MB

    Windows 10 or 11, 64-bit. Installs for your user account, no administrator rights needed.

    Pryzm_0.1.1_x64-setup.exeDownload
Verify the file

In a terminal, this command should print the same checksum:

certutil -hashfile Pryzm_0.1.1_x64-setup.exe SHA256754c7948ad476fe0791d6c55a349bde5eacd2ae132ad5112dcf14b29f630d9d4

macOS

  • Mac with Apple silicon (.dmg)47 MB

    M1 chip or later, macOS 14 or newer.

    Pryzm_0.1.1_aarch64.dmgDownload
  • Intel Mac (.dmg)48 MB

    Intel processor, macOS 13 or newer.

    Pryzm_0.1.1_x64.dmgDownload
Verify the file

In a terminal, this command should print the same checksum:

shasum -a 256 Pryzm_0.1.1_aarch64.dmgfdf0e7957bb5176b186d52027bdb211df1041d5b4ee31a22666557cf6ec6b61f
shasum -a 256 Pryzm_0.1.1_x64.dmge314024176d39870f05c75ace705d1eac7015d060e1d2a2b3d4c179af8469c95

Linux

  • AppImage130 MB

    Linux x86_64. A single file, to make executable.

    Pryzm_0.1.1_amd64.AppImageDownload
  • .deb package51 MB

    Debian, Ubuntu and derivatives, x86_64.

    Pryzm_0.1.1_amd64.debDownload
Verify the file

In a terminal, this command should print the same checksum:

sha256sum Pryzm_0.1.1_amd64.AppImage155d75beae18a144c68d09353cac7a899eeeec101aa98c35f6875c293559ba22
sha256sum Pryzm_0.1.1_amd64.deb19678ff292790b17b6155f7599a24b34e184cf0f8bd1c64c563b3d772d293a7d

Only use Claude Desktop?

The Pryzm extension for Claude Desktop is an alternative to the app: a single .mcpb file you install in Claude Desktop with a double-click.

Verify the file

In a terminal, this command should print the same checksum:

certutil -hashfile pryzm-claude-desktop-windows.mcpb SHA256ae13e4cf723c86457d6d87b8233bc3a20baf743b700cfb6e25cdc765bc220136
shasum -a 256 pryzm-claude-desktop-macos-arm64.mcpbc78e7cc57109849db4a67d096b647a1aee3d2a8d852752f75c0e8e923e3b4ea1
shasum -a 256 pryzm-claude-desktop-macos-x64.mcpbd0cf0e5f9e64aa92d84b328568e63c3e5fd437a3b1fa9841b45455d2231d0d21

All checksums (SHA256SUMS)

First launch

To be upfront: this first release isn't code-signed yet, so your system will show a warning the first time you open it. Here's how to get past it, once.

Windows

  1. Open Pryzm_0.1.1_x64-setup.exe.
  2. If “Windows protected your PC” appears, click “More info”.
  3. Then click “Run anyway”.

macOS

  1. Open the .dmg and drag Pryzm into Applications.
  2. Right-click (or Control-click) Pryzm, then choose “Open”.
  3. If macOS still blocks it: System Settings → Privacy & Security → “Open Anyway”.

Linux

  1. AppImage: make the file executable, then run it.chmod +x Pryzm_0.1.1_amd64.AppImage && ./Pryzm_0.1.1_amd64.AppImage
  2. .deb package: install it with apt.sudo apt install ./Pryzm_0.1.1_amd64.deb

Then, three steps

1

Install Pryzm

Open the file and follow the installer. On first launch, Pryzm downloads its embedding model (118 MB) from pryzm-memory.com; after that, nothing leaves your machine.

2

Connect an AI

Open Pryzm, then “Connect an AI”: Claude Desktop, Claude Code, Cursor or VS Code connect in one click.

3

Tell it something to remember

Start a new conversation (restart the AI if it was already open) and tell it a fact, such as “I'm training for a marathon in April”. In another conversation, ask what it knows about you.

On your computer, or everywhere?

Both give your AIs a memory. The difference is where that memory lives.

Pryzm for desktopFree
  • Your memory stays on your computer, in a local SQLite database.
  • Embeddings are computed on your machine.
  • No account, no sign-up.
  • For desktop AIs: Claude Desktop, Claude Code, Cursor, VS Code.
  • Available on this computer, while it's on.
Download
Pryzm CloudThe hosted plan
  • claude.ai on the web, the Claude mobile app, ChatGPT and Perplexity.
  • The same memory on all your devices.
  • Works without a computer switched on.
  • Hosted in Germany, encrypted at rest.
  • Free plan to start.
See pricing

Nothing is final: you can export your memory from the app and import it into Pryzm Cloud.

Frequently asked questions

Is Pryzm for desktop really free?

Yes. The app is free, with no account and no sign-up: you download it, install it, and that's it. Only Pryzm Cloud, the hosted plan for having your memory on the web and on your phone, has paid plans, with a free plan to start.

Where are my memories stored?

On your computer, in a local SQLite database. The embeddings, which let Pryzm find a memory by its meaning, are computed on your machine. On first launch, the app downloads its embedding model (118 MB) from pryzm-memory.com; after that, nothing leaves your machine. What an AI reads from your memory is processed by that AI's provider, like the rest of the conversation.

Why does Windows or macOS show a warning?

This first release isn't signed with a Microsoft or Apple developer certificate yet, so the system doesn't recognise the publisher and warns you. To check the file is intact, compare its SHA-256 checksum with the one on this page, then follow the “First launch” steps.

Which AIs does it work with?

Desktop AIs that support MCP: Claude Desktop, Claude Code, Cursor and VS Code, connected in one click from the “Connect an AI” screen. claude.ai on the web, the Claude mobile app and ChatGPT can't reach a program installed on your computer: for those, you need Pryzm Cloud.

Can I move to Pryzm Cloud later?

Yes. Export your memory from the app, then import it into Pryzm Cloud: the export and import formats are compatible. Your memories come with you, without repeating everything to your AIs.