The Best Mac Customisation Apps, Compared Honestly

"Customisation app" covers five different categories that solve five different problems, and buying the wrong one is why people end up with a Mac full of utilities they never open. Here is the map, by job, with what each category actually gives you.

Window management

Snapping windows to halves, quarters and thirds with keyboard shortcuts.

• Rectangle (free, open source) — the default recommendation and hard to beat.
• Magnet (paid, App Store) — the commercial standby, one-time purchase, very stable.
• Loop (free) — a radial menu you steer with the mouse. Different feel, and people who like it stay.
• Amethyst (free) — automatic tiling. A real change in working habit rather than a convenience.

Check what macOS does first: recent versions tile windows by dragging to a screen edge, and the Window → Move & Resize menu handles halves and quarters. If that is all you need, install nothing.

Menu bar management

Hiding or organising the icons at the top right.

• Ice (free) — the most active free option.
• Hidden Bar (free) — simple divider you drag icons behind.
• Bartender (paid) — the most capable: per-icon rules, show-on-change, search.

Before installing: System Settings → Control Centre removes system icons entirely, and tightening the item spacing fits several more on a notched MacBook.

Launchers and clipboard

• Raycast (free tier) and Alfred (free, paid Powerpack) — launcher, calculator, clipboard history, snippets, scripts. If you only add one utility to a Mac, this is the category with the highest return.
• Maccy (free, open source) — clipboard history and nothing else, which is a virtue.

Spotlight already handles launching, unit conversion and basic calculation. The reason to move is clipboard history and custom actions, not search.

Hidden settings

The category this site is about: preference values macOS stores but never shows you.

• TinkerTool (free) — a fixed set of checkboxes, long maintained, terse labels.
• Deeper (free) — similar, with a separate build per macOS version.
• MacPilot (paid) — the widest coverage, plus maintenance features.
• Mainspring ($29 once) — 90+ settings written in plain English, grouped into recipes, and reversible from the same switch.

Appearance

Icons, themes and menu bar aesthetics. Worth being blunt: macOS resists deep theming, and tools that force it tend to break at every OS update. Custom app icons (right-click → Get Info → paste an icon), a good wallpaper and accent colour cover most of what people want, and none of it breaks in September.

The hidden cost of every utility

Each background app costs something small: memory, a little battery, a login item, and one more thing that can break in September when macOS changes. That is fine for two or three you use daily and a bad trade for ten you installed after reading a list.

A useful test before installing anything: could a keyboard shortcut, a Shortcuts automation or a setting do this? macOS has more built in than most lists admit. Option-Command-H hides every other app. Hot corners give you Mission Control and the desktop from a flick. Text Replacement covers snippets. Spotlight does unit conversion and arithmetic. Checking those first is how you end up with four utilities you love rather than fourteen you tolerate.

What to install, in order

1. A launcher with clipboard history. Biggest daily gain, free to start.
2. A window manager, if the built-in tiling is not enough for you.
3. A settings tool, once you find yourself pasting Terminal commands from forums.
4. A menu bar manager, only if Control Centre and tighter spacing did not solve it.

Four apps, not fourteen. Every background utility costs a little memory, a little battery and one more thing to update when macOS changes.