Fettle

Tiny Mac tools, one menu bar.

Keep your Mac awake, mute the mic, lock input, hide desktop clutter, mix audio, and protect battery health from a compact menu-bar app.

Buy for $3.99Download Mac app
Secure checkout by PolarLifetime license
macOSLifetimeNo subscription
Fettle
2 Active
Sessions
Keep Awake
On · 1h 12m left
Presentation Mode
Off
Input & Audio
Clean Mode
Tap to lock keyboard
Mic Mute
Muted
Audio Mixer
3 apps playing
System
Hide Desktop Icons
Icons visible
Battery Limit
Charging to limit
80%

Tiny tools, big impact.

Fettle keeps your essential controls visible, stateful, and fast. No giant dashboards, just exactly what you need.

AGENTS
1 needs you
merchant-webWorking
Claude Code
25s
TIMELINE14 calls
Read·/Users/modestnerd/Developer/Pro...crates/kanvoya-domain/src/auth.rs
25s
Read·/Users/modestnerd/Developer/Pro...orm/crates/kanvoya-app/src/lib.rs
30s
Bash·cd /Users/modestnerd/Developer/...erchants app test ===" && grep -n
36s
Read·/Users/modestnerd/Developer/Pro...orm/crates/kanvoya-app/src/lib.rs
48s
Bash·cd /Users/modestnerd/Developer/...a-app/src/lib.rs | sed -n '1,20p'
51s

The Agent Menu

Fettle lives where you need it. The menu drops down intelligently to show active agents, timelines, and ongoing background work.

Locked

Clean Mode

Lock your keyboard instantly to wipe it down without accidental inputs.

Audio Mixer

Control volume levels per application directly from the menu bar.

80%
Battery Limit Active
Charging paused to preserve lifespan.
Healthy

Battery Protection

Set a custom charging limit to protect your MacBook's battery health when plugged in all day.

One-time launch price

$3.99, lifetime license.

Simple checkout for a focused Mac utility. Pay once, install it on your Mac, and keep the core menu-bar tools without a subscription.

Fettle for Mac
Lifetime access, no subscription.
$3.99USD
  • Menu-bar controls for sessions, audio, input, and system state
  • Secure Polar checkout
  • License key delivered after purchase
  • Two Mac activations included
Buy with PolarDownload Mac app

Clear enough to buy.

The page answers the practical questions before sending someone to checkout.

How does buying work?
Tap Buy, check out securely through Polar, then download Fettle for Mac.
Is this a subscription?
No. The page sells Fettle as a $3.99 lifetime license for the Mac app.
Why sell it directly?
Fettle is a menu-bar utility with helper-style Mac controls. Direct distribution keeps the purchase flow simple and avoids hiding what the app needs to do.
What happens after purchase?
You receive the Mac download and license details for your lifetime copy of Fettle.