EQer—System-wide equaliser with hearing compensation

System-wide equaliser with hearing compensation

Requires macOS Sonoma 14.2 or later
Last updated: 2026-04-28

A 10-band equaliser that processes every app on your Mac in real time. Pick a preset, drag the curve, or paste your audiogram and let EQer calculate the right listening curve for your hearing.

Music, video calls, podcasts, games—everything sounds the way you want it to, with smooth processing you won’t notice until you turn it off.

Menu Bar

Ear icon with one-click toggle, no dock icon
System-Wide

Every app gets its own real-time audio processing tap
Audiogram

Automatically adjust to offset dips in your hearing
Presets & Custom

22 presets or drag points to sculpt your own curve
Per-App Control

Override settings for individual apps
Compressor

Dynamic range compression evens quiet and loud sounds

Equaliser

Interactive 10-band graphic equaliser (31 Hz–16 kHz)
22 built-in presets for all types of music and tastes
Drag-to-adjust chart for custom curves
0.5 dB snap grid for precise adjustments
±12 dB gain range with automatic clipping prevention

Audiogram

Enter hearing thresholds for 8 standard freqs (250 Hz–8 kHz)
Copy and paste audiogram data as TSV, CSV, or XML
More precise data can be copied from iOS Health app export.xml
Gains calculated using the audiology-grade processing
Adjustable compensation strength: full, medium, or low
Visual EQ curve shows exactly how your audio will be adjusted

Per-App Control

See every app currently producing audio
Toggle EQ and compression on or off per app
Assign a different EQ curve to individual apps
Overrides persist even when the app isn’t running
Visual indicators show which apps have custom settings
Right-click to reset any app back to global defaults

Output Devices

Bypass EQ for specific output devices
Automatically adapts when you switch audio output
Tracks bypassed devices across connect/disconnect cycles

Dynamic Range Compression

Two-way compressor: boosts quiet and reduces loud
Brickwall limiter at -1 dBFS prevents digital clipping
Enable globally or per-app

Menubar-only app—no dock icon, no window clutter
Ear icon fills when processing is active, outlines when bypassed
One click to toggle processing on or off
Quick access to settings for the frontmost audio app
Launch at Login

Real-Time Processing

Individual audio taps for every application producing sound
Lock-free, allocation-free audio callback for glitch-free playback
Smart process filtering excludes system daemons and services
Identifies audio from browser tabs and sub-processes

Optimised

Only 459 KB app download size
Less than 30 MB base memory footprint

How It Compares

Here’s how this app compares to other similar apps.

	EQer	SoundSource	eqMac
Native Mac app	✓	✓	Hybrid
Menu bar app	✓	✓	✓
10-band EQ	✓	✓	✓
Audiogram compensation	✓	–	–
Dynamic range compressor	✓	–	–
Per-app EQ curves	✓	✓	–
Device bypass rules	✓	✓	–
App Store	✓	–	✓
RAM usage	30 MB	300 MB	40 MB
App size	459 KB	85 MB	75 MB

Where do I get my Audiogram values?

You can take a Hearing Test in the iOS Health app and will get an audiogram as a result. You might also have one from an audiologist as a result of an in-person hearing test.