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Mstat a temperature and stat tracker for macOS in Zig and SwiftUI

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Turns out it's weirdly hard to quickly check cpu temp on M series macs so whipped this up, also has cpu usage, memory, and lets you show multiple or just an icon for the popover.

HN · launched Aug 3, 2026 · 13 upvotes (top 34%) · 0 views

Niche: macos menu bar utilities · 312 launches, 20 in the last 7 days ▼ -33% · Explore this niche →

Category and tags
  • Horizontal
  • Observability & eval
  • Prosumer
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

More like this: all 312 launches in macos menu bar utilities →

Could you build this?

Partial Creating the menu bar UI in SwiftUI is straightforward, but reading Apple Silicon internal SoC temperature sensors requires calling undocumented IOKit/SMC C-APIs.

What it would actually take: Requires bridging Swift with Zig/C to invoke private Apple Silicon IOHID / SMC (AppleSMC / HIDServiceClient) kernel APIs to locate undocumented temperature keys (like 'Tp09', 'Tg05'). The challenging part is deciphering Apple's proprietary thermal and power management registers across different M-series chip generations without official documentation.

Discussion

No comments on this launch.

Competitors

Other products that read as similar to this one : 211 launches clear the similarity bar, closest 8 shown.

Attention rank: #99 of 212 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 247 days after the earliest competitor.

  • ThermPort · ph · 2026-10-06 · 1 upvotes · similarity 0.56
  • MacMonitor · ph · 2026-09-21 · 1 upvotes · similarity 0.52
  • Warashi · ph · 2026-11-06 · 1 upvotes · similarity 0.49
  • OpenStats · github · 2026-09-12 · 42 upvotes · similarity 0.48
  • mectrics · ph · 2026-07-31 · 268 upvotes · similarity 0.48
  • NetworkMonitor · ph · 2026-10-21 · 1 upvotes · similarity 0.46
  • Dotmeter · ph · 2026-11-14 · 1 upvotes · similarity 0.46
  • MemStats · ph · 2026-10-15 · 1 upvotes · similarity 0.45

Related data

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