Nothing leaves your Mac.

The short version

• No account. Barograph doesn't know who you are.
• No telemetry. No analytics, usage tracking, advertising, or crash-reporting services, in the app or on this website.
• Update checks only when you allow them. Checking for updates is the only thing Barograph connects to the internet for, and it sends no information about your Mac.
• Everything stays on your Mac. What Barograph measures is never uploaded, sold, or shared, and we never see it.

What Barograph reads

To show how your Mac is doing, Barograph reads system counters that macOS makes available to apps, without administrator rights:

• CPU, GPU, and Neural Engine activity, frequency, and power, per cluster and per core.
• Memory use and pressure, swap, disk reads and writes, and free space on the startup disk.
• Network throughput per interface: amounts only, not what is sent or to whom.
• Temperatures, fan speeds, battery charge, and power draw.
• The list of running processes: each one's short name (such as “Safari”) and how much CPU, memory, and energy it uses.

Barograph does not read your files or their contents, process paths or command-line arguments, window titles, what you type, your screen, your clipboard, your location, or what you do in other apps. It reads only while something is looking: a menu bar item, an open popover or window, or a feature you turned on, such as History.

What it keeps, and where

None of this is sent anywhere. Process names are treated as sensitive throughout.

History

Record History is off until you turn it on in Settings. While it is off, Barograph creates no history file. When it is on:

• Readings are saved every 10 seconds, with marks for throttling, sleep and wake, charger changes, Low Power Mode, and unusual activity. Marks hold numbers only, never a process name or a file path.
• Everything older than 24 hours is deleted automatically. Deleted rows are zeroed where possible, and the file is compacted regularly, so old readings don't linger in it.
• The folder is readable only by your user account, and it is excluded from Time Machine backups, so no backup keeps history longer than 24 hours.

Remember Top Processes is a second switch, also off by default. It keeps the busiest programs of each minute (usually six to eight) by short name, with their CPU, energy, and memory numbers, so History can tell you which program was running. It never stores paths, arguments, process IDs, user names, or window titles. Turning it off erases every saved name at once; the rest of your history stays.

Delete History in Settings removes the history database and any copy Barograph set aside after an error. Turning Record History off keeps what was saved until it ages out after 24 hours, or until you delete it.

History can't be exported. Only Barograph's own window shows it.

Network

Barograph connects to the internet for one thing only: checking for updates. It sends no analytics and makes no other lookups.

Metrics endpoint. If you turn on Serve Metrics on This Mac in Settings, Barograph answers requests at http://127.0.0.1:9273 (you can change the port). It is off by default.

• Other computers can't connect: it listens on this Mac's loopback address only.
• While it is on, any program running on this Mac, under any user account, can read it. It has no password.
• It serves current numbers only: no process names, paths, or history. Requests made by web pages in your browser are refused.

Updates. Barograph checks for new versions with Sparkle, the standard updater for Mac apps outside the App Store.

• Automatic checks are off until you turn on Check for Updates Automatically in Settings. Then Barograph checks once a day. You can also check at any time with Check for Updates… in the menu orCheck Now in Settings.
• A check downloads the list of releases from downloads.barograph.app. The request carries Barograph's and Sparkle's version numbers and nothing about your Mac: no system profile, no identifier, and nothing Barograph has measured.
• Updates are installed only when you choose. Barograph tells you when one is available and installs it when you click Install Update, unless you ticked Automatically download and install updates in that window; turning off Check for Updates Automatically stops that again. Before replacing the app, it checks the update's signatures to make sure it comes from us.

Widgets, Shortcuts, and notifications

Widgets. Widgets can't measure anything themselves, so Barograph writes a small file of numbers for them in its App Group container. It contains no process names and no insight descriptions. Barograph writes it only while a Barograph widget exists, and deletes it once you remove the last one.

Shortcuts, Siri, and Spotlight. Get Metric and Open Page never return a process name. Explain My Mac and System Summary describe what's unusual right now and may name the program responsible, just as Barograph's window does. Answers go only to the shortcut or request that asked; if a shortcut you build sends them on, for example in a message, that is the shortcut's doing. Siri handles voice requests under Apple's privacy policy.

Notifications are off by default. When you turn them on, macOS asks for your permission. They cover alerts, throttling, memory growth, and memory pressure, and they never name a process, because macOS keeps delivered notifications on disk.

Permissions

• No administrator password, and no helper tool is installed.
• Notification permission is requested only when you turn notifications on.
• Launch at Login uses the standard macOS login item, which you can see and remove in System Settings.
• Barograph doesn't ask for Accessibility, Full Disk Access, Screen Recording, location, camera, microphone, contacts, or calendars.

Logs and crash reports

Like most apps, Barograph writes diagnostic messages to macOS's own log on your Mac. Messages that could contain a name or a path are marked private, so macOS hides those parts. The log stays on your Mac.

Barograph includes no crash reporter. If it crashes, macOS may keep a crash report on your Mac; we see it only if you choose to send it to help@simplify-net.com.

Barograph is signed with an Apple Developer ID and notarized by Apple. The first time you open it, macOS may check that signature with Apple, under Apple's privacy policy.

Removing everything

1. If you recorded history, choose Delete History in Settings.
2. Right-click any Barograph item in the menu bar and choose Quit.
3. Move Barograph from Applications to the Trash.
4. Optionally, remove what's left in your Library folder:
   • ~/Library/Application Support/Barograph (history)
   • ~/Library/Preferences/com.simplify.barograph.plist (settings)
   • ~/Library/Group Containers/9823MDN74V.com.simplify.barograph (widget data)

Barograph keeps nothing anywhere else, and we hold no copy.

This website

• No cookies, analytics, advertising, or tracking pixels.
• Nothing is loaded from other companies: no web fonts, embeds, or outside scripts. The only script is the interactive chart on the home page, served from this site.
• Links from this site send no referrer to the sites they open.

The site, downloads, and update checks are served by our hosting provider, Firebase Hosting from Google. Like any web host, it processes your IP address and basic request details, such as your browser and the page or file requested, to deliver them and to protect the site from abuse, under Google's privacy policy. We don't add analytics to those logs or use them to identify anyone.

Email and changes

For questions about this policy or your data, write tolegal@simplify-net.com. For help with the app, write tohelp@simplify-net.com.

When you email us, we use your message and address only to answer you, and we don't add you to any list. Ask us at any time to delete your messages.

If Barograph or this website ever changes how it handles data, this page changes first, with a new date. Anything that runs on its own and connects to the internet, such as automatic update checks, will always be off until you turn it on.

Last updated October 20, 2026.