CPULEDs

Live Per-Core Activity Meter

Only for Mac

Free · In‑App Purchases

Mac

Monitor your Mac's CPU activity with beautiful live LEDs in the menu bar. Per-core Apple Silicon visualizations, VU meters, and a flowing color-changing activity bar. CPULEDs turns your Mac's CPU activity into a live light show in the menu bar — one LED per core, glowing in real time as your Mac works. Every core pulses with what your machine is actually doing: a quiet green hum during idle, a yellow ramp under load, red bursts during compiles, renders, exports, or gameplay. Designed for Apple Silicon — Performance and Efficiency cores are detected automatically and grouped with a subtle divider, so a single glance tells you whether the work is landing on the P-cluster or the E-cluster. Pick the look that fits your desk: — DISPLAY MODES — • LED Row — one indicator per logical core, with Flat, Glossy, or Glow finishes • Aggregate Bar — a single sliding horizontal bar for the minimalists • Retro VU Meter — segmented vertical bars that dance per core, inspired by classic studio gear — LED SHAPES (LED Row mode) — Circle · Rounded Square · Square · Vertical Bar · Glass Ball (marble-style dome with specular highlights) — EVERYTHING ELSE — • Apple Silicon aware — P-cores and E-cores grouped, with an optional "P" / "E" letter overlay • Adjustable sampling — from 0.3s for responsive monitoring to 3s for energy savings • Configurable color thresholds for idle, medium, and high activity • Click the menu bar for a live per-core readout panel • Launch at login (via Apple's SMAppService — no helper-tool tricks) • Resizable Preferences window • Fully sandboxed with the hardened runtime — no kernel extensions, no permissions, no background daemons • 100% native SwiftUI — blends naturally into macOS — PRIVATE BY DESIGN — CPULEDs makes zero network connections. All CPU statistics are read locally from the Mach kernel using public macOS APIs. No analytics. No telemetry. No accounts. — TRY FREE, OWN IT FOREVER — Every feature is unlocked free for 7 days. After the trial, a one-time in-app purchase unlocks CPULEDs for life on your Apple ID — Family Sharing enabled, no subscription, ever. — PERFECT FOR — Developers watching compile-time CPU pressure, video editors monitoring export jobs, audio engineers tracking real-time workloads, gamers checking thermal headroom, or anyone who just likes watching their Mac breathe. Made with care by ApexKraft.

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The developer, ALEX ALEKSEYEV, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    Information

    Seller
    ALEX ALEKSEYEV
    Size
    546.3 KB
    Category
    Utilities
    Compatibility
    Requires macOS 15.6 or later.
    • Mac
      Requires macOS 15.6 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Alex Alekseyev
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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