Your Mac's battery,
under control.
See the exact time your battery dies. Auto-toggle Low Power Mode. Set per-app power rules. All from your menu bar.
One-time $9.99 purchase. No subscription. 14-day refund.
Your battery dies at 19:57. No guessing.
Official download only
Buy and download TurtleBar from turtlebar.app so you know the Mac app and updates came from the creator.
Private local utility
TurtleBar reads macOS battery and app state on your Mac to power menu bar predictions and rules.
One-time $9.99
No subscription, no upsell maze. Stripe checkout sends you back to the download page after purchase.
Use the official TurtleBar checkout and download flow on turtlebar.app. If anything looks wrong, email turtlebar@soren-starck.com before installing.
Popular guides
Fix the Mac battery questions people search for most
Mac Low Power Mode automation
Turn on Low Power Mode manually, then automate it by battery level or app.
Best Mac battery menu bar app
Compare percentage, time remaining, alerts, and battery-saving controls.
MacBook battery health and cycles
Check cycle count, maximum capacity, and when battery service is actually needed.
54% means nothing.
Percentages don't tell you when you die
54% could mean two hours or four. Without knowing the exact time your battery runs out, you can't plan your day.
You toggle Low Power Mode too late
By the time you remember, you're already at 10%. An automated toggle at 40% would have saved you an extra hour of battery life.
Every app drains differently
Zoom eats battery. Safari doesn't. But macOS treats them the same. Your power settings should adapt to what you're actually running.
Predict. Optimize. Control.
TurtleBar doesn't just show when your battery dies. It keeps you alive longer with smart automation and per-app power rules.
Smart Low Power Mode
Auto-toggles based on your battery level.
Per-App Power Rules
Set rules per app. You decide what drains what.
Exact Time
Shows '3:47 PM' or '2h 34m' in your menu bar.
Real-time
Adjusts as your workload changes.
Featherweight
< 1% CPU. Native macOS. No Electron.
Per-app power rules in action
Also includes: Battery percentage triggers · Privacy first (zero tracking) · Intel & Apple Silicon · Lifetime updates
hey, i'm soren
(the guy who made turtlebar)
i never knew when my mac would die.
percentage means nothing. is that six hours? four hours? it depends on what you're doing. browsing lasts way longer than video editing.
so i built a menu bar app that shows the exact time, based on your actual usage. then i added smart power management: auto Low Power Mode, per-app rules, battery triggers.
one app. no bloat. know when you die, and stay alive longer.
Everything. $9.99.
One-time payment. Lifetime access. No subscription. Updated for modern macOS.
- Exact time in menu bar ('3:47 PM' or '2h 34m')
- Smart Low Power Mode (auto-toggle)
- Per-app power rules
- Battery percentage triggers
- Real-time updates as you work
- Works on Intel & Apple Silicon
- Works on macOS 14 Sonoma, 15 Sequoia, 26 Tahoe, and 27
- Sparkle auto-updates included
- 14-day no-hoops refund policy
Secure payment via Stripe · 14-day money-back guarantee · Instant download · Version 1.2.2 with auto-updates
Your questions answered
Battery guides
Learn everything about Mac battery management.
How to See Time Remaining on Mac
Apple removed it in 2016. Here's how to get it back.
Low Power Mode Automation
Auto-toggle at custom thresholds with per-app rules.
Best Mac Battery Apps 2026
TurtleBar vs coconutBattery vs AlDente vs free options.
Extend MacBook Battery Life
15 proven tips for longer battery life on any MacBook.
MacBook Battery Health
Check cycle count, capacity, and preservation tips.
Battery App for Mac & MacBook
Pick the right menu bar app for time, health, and Low Power Mode.
Stop guessing. Start managing.
Exact battery predictions, smart Low Power Mode, and per-app power rules. All in one lightweight menu bar app. $9.99 one-time.