Your Mac battery is draining too fast.
Now you'll know why.
PowerVigil monitors real power consumption and tells you exactly what to do about it. Not estimates. Not guesses. Measured watts.
What makes it different
Not just numbers. Advice.
Activity Monitor shows "Energy Impact" with no units and no context. PowerVigil tells you what's happening and what to do.
Chrome is using 4x more power than usual
Try quitting and reopening it. It's consuming 8.2W right now (baseline: 2.1W).
Battery draining fast
Spotify (40%) and Figma (24%) are using the most power right now.
Battery sipping, not gulping
Only 3.2W system draw right now. Under 5W is excellent for your workload.
Capabilities
9 native monitors.
Zero guesswork.
Built on Mach, IOKit, SMC, and IOReport APIs. The same frameworks Apple uses internally.
Real Watts Pro
Actual power for CPU, GPU, DRAM, and Neural Engine via IOReport. Not inferred from CPU%. Measured.
Battery Tips Pro
20+ contextual tips based on your actual usage. Which app to close, when to plug in, why it's draining.
Anomaly Detection Pro
Learns each app's normal power baseline. macOS notification when something spikes to 3x.
Intelligence Pro
Usage profile, battery health prediction, and a habit score (A+ to F) across charging, thermal, and discharge.
Thermal Monitoring
Event-driven 5-level pressure. Per-sensor temps for CPU, GPU, fans. Instant throttling alerts.
Process Ranking
Apps sorted by real energy impact. E-core vs P-core weighting. Chrome's helpers grouped as one.
Comparison
Things no other monitor does.
PowerVigil is the only Mac battery monitor with actionable intelligence.
| Feature | PowerVigil | iStat Menus | Stats | Activity Monitor |
|---|---|---|---|---|
| Battery tips | ✓ | — | — | — |
| Anomaly detection | ✓ | — | — | — |
| Real watts | ✓ | Partial | — | — |
| E/P-core weighting | ✓ | — | Partial | — |
| Health prediction | ✓ | — | — | — |
| Price | Free / €9.99 | $14 | Free | Built-in |
Pricing
Invest in your battery.
A MacBook battery replacement costs €250+.
PowerVigil helps you delay that for months or years.
Free
Everything you need to start
Forever free
- Overview tab (CPU, memory, thermal)
- Menu bar stats
- Top 5 processes
- Basic battery info
Pro
Full intelligence suite
One-time · All updates forever
- Everything in Free
- Battery Tips Engine
- Anomaly detection + alerts
- Real watts (IOReport)
- Usage intelligence + habit score
- Battery health prediction
- Detailed thermal sensors
Technical details
Lightweight by design.
FAQ
Frequently asked questions
Why is my Mac battery draining so fast?
Background apps, browser tabs, and GPU-heavy processes like video calls or creative tools often drain your battery without you noticing. Activity Monitor shows an unhelpful "Energy Impact" number with no units. PowerVigil shows real watts per app so you can identify the actual culprit.
What app is draining my Mac battery?
PowerVigil ranks every running app by real energy consumption measured in watts via Apple's IOReport framework. It also learns each app's normal baseline and alerts you when something spikes to 3x its usual power draw.
Is PowerVigil an iStat Menus alternative?
Yes. PowerVigil offers features iStat Menus doesn't have: actionable battery tips, anomaly detection, real watts measurement, and usage intelligence with health prediction. It's also lighter (776 KB vs 30+ MB) and costs less.
Does it work on Intel Macs?
PowerVigil is built for Apple Silicon (M1/M2/M3/M4). Core features like real watts measurement depend on IOReport APIs only available on Apple Silicon. Intel Macs are not officially supported.
Is it a subscription?
No. PowerVigil Pro is a one-time purchase with all future updates included. The Founding Edition at €5.99 is limited to the first 500 licenses, after which the price goes to €9.99. There is no subscription, ever.