How Much Data Your Mac Used, Day by Day
Activity Monitor's Network tab resets every restart, and macOS has no monthly total. On a phone hotspot or a capped plan that's the number you actually need. Notchy's Network Traffic History keeps it — downloads and uploads, totalled by day, week, month and year.
Four totals at a glance
Today, this week, this month and this year, each split into download and upload, in Settings → Connectivity — next to the live throughput Notchy already shows.
Up to a year, on your Mac
Daily totals are kept for up to a year in a small local file. Clear it with one button whenever you like; turning the feature off stops recording.
Honest about gaps
Time the Mac spends asleep, or between samples, is left out instead of guessed — and Notchy tells you how many minutes it actually observed, so a total is never padded.
Totals, not surveillance
Only byte counts from the physical network interfaces are recorded. No websites, addresses, Wi-Fi names, hosts or packets are saved, and nothing leaves the Mac.
Everything Notchy does, for free
- Fluid Dynamic Island animations on the Mac notch
- Command palette (⌃⌥K) — every action one keystroke away
- Knock — double-tap a modifier key to open the notch
- AI usage tracker (Claude Code, Codex, Cursor, Copilot)
- Detach any tab into a menu-bar popover
- Now Playing music controls (Apple Music & Spotify)
- Time-synced karaoke lyrics under the notch
- Mac clipboard history shelf (password-manager safe)
- Searchable clipboard — filter by text, file name, or OCR'd words
- On-device OCR — copy a screenshot, get its text (Apple Vision)
- Window snapping — drag a window to the notch to tile it
- App Launcher — pin apps to the notch, open with one tap
- Text snippets — TextExpander-style pastes from the ⌘K palette
- One-tap screen capture to clipboard + shelf
- Color eyedropper — sample any pixel, hex auto-copied
- System-wide mic mute for every meeting app at once
- Keystroke HUD for demos & screencasts (secure-input safe)
- Keyboard cleaning lock with countdown island (⌘⎋ unlocks)
- Menu-bar icon hiding — Bartender-style separator & chevron
- Live CPU / memory / network stats flyout
- Open GitHub PR count in the notch (Keychain-stored token)
- iPhone-style call island — Answer/Decline FaceTime on the notch
- Notch Terminal — real VT100/xterm shell in a PTY, its own tab
- Camera Guard — alert (or block) when any app opens your camera
- Caps Lock HUD — brief island on every toggle
- Full Charge island with adjustable threshold + low-battery sound
- Alt HUD styles — edge-pinned bar or circular gauge off the notch
- Audio-reactive Now Playing visualizer (real FFT of system audio)
- Custom closed-notch idle animation — drop in your own Lottie JSON
- Drag-and-drop file drop shelf — persists across relaunches
- Zip & unzip files right from the shelf
- Image converter (HEIC, PNG, JPEG, TIFF, PDF) + video → GIF
- Run Apple Shortcuts with one tap
- Screenshots auto-staged on the shelf, ready to drag
- Download finished alerts with Reveal in Finder
- USB drive mount island with one-tap Eject
- Apple Reminders quick capture & due list
- macOS Pomodoro notch timer & stopwatch — streaks + 7-day chart
- Resizable expanded panel (width & height, live preview)
- System HUDs (volume, brightness, battery)
- Audio output switcher (speakers, AirPods, monitor)
- AirPods connection manager & battery
- Magic Mouse, Keyboard & Trackpad battery + low-battery alerts
- Quick notes & Calendar widgets
- Camera Mirror (check your appearance)
- Keep Awake (caffeine toggle)
- Teleprompter (Cuely) for Zoom calls
- Focus-aware alerts & native haptic feedback
- Lock screen widgets & hide-the-notch mode
- 134 languages, fully localized
- Native SwiftUI, tuned for Apple Silicon
Mac Data Usage Monitor — FAQ
How do I see how much data my Mac has used?
macOS only shows totals since the last restart, in Activity Monitor → Network. With Notchy, turn on Network Traffic History in Settings → Connectivity and it keeps day, week, month and year totals from then on.
Does it show data usage per app?
No — Notchy records totals for the whole Mac, not per app or per website. For a per-app breakdown, Activity Monitor's Network tab or a dedicated firewall such as Little Snitch is the right tool.
Can it warn me before I hit a data cap?
Not yet. It keeps totals so you can check them; it doesn't set a limit or alert you. Bandwidth+ is a focused free option if you need per-interface monthly tracking.
Does it record history before I turn it on?
No. macOS keeps no history to import, so the totals start the moment you switch the feature on.
Does it slow my Mac or drain battery?
No. It reads two interface counters on a slow timer, parks while the Mac sleeps, and writes one small file of daily totals.
When does Network Traffic History arrive?
It's coming in Notchy 1.0.201. Like every new option, it starts off.