Dynamic wallpaper, aerial, live wallpaper, screen saver: what each one does on a Mac
Dynamic Wallpapers only brighten and darken with the time of day. Aerials animate as you lock or unlock the Mac (macOS 26 and later). A Screen Saver plays only while the Mac is idle. A live wallpaper, one that keeps moving while you work, has no Apple setting: it takes an app.
A dynamic wallpaper never moves: Apple describes an image whose light shifts with the time of day. On macOS 26 and 27 an aerial plays its animation when you lock or unlock the Mac, a screen saver runs only while the Mac is idle, and a live wallpaper, one that keeps moving while you work, takes a third-party app. Below, each term in Apple’s own pages, split by macOS version, then one table to decide from.
Four words get mixed up on a Mac: which ones are Apple settings?
Three of them are. Dynamic Wallpapers, aerials and the screen saver each have a place in System Settings and a paragraph in Apple’s Mac guide. The fourth, “live wallpaper”, is the trade’s name for a background that an app draws and keeps moving while you work; Apple’s Mac guide pages on the wallpaper, the screen saver and the Lock Screen, read on 7 October 2026, never use the phrase.
Apple draws the first boundary itself: its Wallpaper settings page covers “the picture or color shown on your desktop” and screen saver options “for hiding the desktop when you’re not using your Mac”. The Lock Screen is a third surface, and its settings deal with idle times and passwords, not pictures.
The answer to “does it move?” also depends on your macOS. Apple’s pages for Sonoma 14 and Sequoia 15 describe an aerial wallpaper differently from its pages for Tahoe 26 and Golden Gate 27, a split that none of the vendor explainers we read on 7 October 2026 draws. The four terms:
- Dynamic Wallpapers: a picture whose light follows the clock. Apple’s own name.
- Aerials: slow-motion footage of places, filed under Landscape, Cityscape, Underwater and Earth. Apple’s own name, in lower case.
- Screen Saver: what takes over the screen while the Mac sits idle. Apple’s own name.
- Live wallpaper: a background an app draws and keeps moving behind your windows and icons. The market’s name; no Apple setting carries it.
A Dynamic Wallpaper changes light, not motion
Apple’s description is a single line: these images “brighten and darken” according to the time of day at your current location. It never says “animate”. A Dynamic Wallpaper is a picture whose lighting follows the clock, not a clip that plays.
The control sits in System Settings > Wallpaper. When a pop-up menu appears next to the current thumbnail, Apple’s Wallpaper settings page lists four values: Automatic follows your Appearance setting and switches from light to dark at sunset; Dynamic brightens and darkens gradually through the day; Light (Still) and Dark (Still) hold a static light or dark version. Some Dynamic Wallpapers need a download first, flagged by an icon beside the name.
Older tutorials use older words. Apple introduced “a new Dynamic Desktop” with Mojave on 4 June 2018, a Mojave-era phrase and not a menu item today. Apple’s guide, version by version:
- macOS 10.14 Mojave: “Dynamic Desktop pictures” that change “throughout the course of the day”.
- macOS 13 Ventura: Dynamic Wallpapers, described as pictures that change “throughout the course of the day”.
- macOS 15 Sequoia, 26 Tahoe and 27 Golden Gate: Dynamic Wallpapers, images whose light shifts with the hour.
A Dynamic Wallpaper stuck on one frame is a separate question: the Tahoe diagnosis page starts with the pop-up above.
Do aerials move? Apple’s answer differs between macOS 15 and macOS 26
Aerials are Apple’s slow-motion videos of places: Landscape, Cityscape, Underwater and Earth. Apple introduced them with macOS Sonoma in June 2023 as screen savers that “seamlessly transition into the desktop”. On your desktop, Apple’s pages for the two eras part ways.
- macOS 26 Tahoe and 27 Golden Gate. Apple writes that an aerial chosen as wallpaper will “animate as you lock or unlock”, and that by default it also serves as your screen saver. Apple’s pages: macOS 27, the guide’s default today and macOS 26, identical on this point.
- macOS 14 Sonoma and 15 Sequoia. The wallpaper version is described as “still images”; the slow motion belongs to the screen saver. Two toggles linked them: Show as wallpaper in the Screen Saver pane gives a still aerial as your wallpaper, and Show as screen saver in Wallpaper settings turns the wallpaper aerial into a slow-motion saver. Apple’s pages: macOS 15 and macOS 14. Neither toggle appears for 26 and 27.
That is why two opposite sentences circulate: “aerials only play as a screen saver” matches Sonoma and Sequoia, while Tahoe and Golden Gate say “animate as you lock or unlock”. A tutorial that does not name its macOS version cannot be trusted here. iDownloadBlog (7 July 2025, on Tahoe Day) adds that the clip plays on the Lock Screen and then settles into the static wallpaper after unlocking; Apple’s page does not say so, so read the still frame as a reviewer’s report.
Shuffle Aerials is a rotation, not extra motion: stills that swap at an interval you choose. The macOS 27 pages add a category named Mac, described as animated gradient pill shapes that spell “Mac”; they do not say when it animates, so this page files it nowhere. The scheduler that picks between variants of a Landscape aerial by the sun’s position has its own page.
A name clash: Aerial, with a capital A, is also a separate free, open-source app (MIT licence), not an Apple category; the FAQ below covers it.
A screen saver is not a wallpaper: it takes over the screen while you are away
Apple describes a screen saver as something you use “to hide the desktop” when you are away or need extra privacy. It starts by itself once the Mac has been idle for the time you choose, unless the display is already off, and a key press, mouse movement or trackpad touch ends it. A wallpaper stays behind your windows; a screen saver replaces everything on screen.
On macOS 26 and 27, go to System Settings, pick Wallpaper in the sidebar and then Screen Saver. Use Screen Saver takes Automatic or Custom settings, and Start Screen Saver sets the idle time first. On Sonoma and Sequoia, Screen Saver was its own sidebar entry. Besides the macOS images and the aerials, the Other category holds your photos and savers that show a message or a “Word of the Day”.
You can also start it at once with a hot corner you set up for it, or with Apple menu > Lock Screen. The password is a separate setting: the Lock Screen settings include “Require password after screen saver begins or display is turned off”, and the timer that turns the display off lives there too. The screen saver hides the desktop, while the Lock Screen decides when a password is asked. If a saver will not start, see the screen saver troubleshooting page; for which surface can animate what, the Lock Screen page.
What is a live wallpaper, if Apple’s Mac guide never uses the word?
It is the usual name for an app-drawn background that keeps moving behind your windows and icons while you work. That is the one behaviour Apple’s Mac guide pages do not describe as a setting: aerials move at lock and unlock, Dynamic Wallpapers never. Saying the guide documents no such setting is narrower, and safer, than saying macOS cannot.
Apple’s iPhone guide describes a Live Photo that can play on the Lock Screen when the device wakes up, a different mechanism on a different surface (iPhone versus Mac). Apps build a live wallpaper by looping a video file or by drawing a scene in real time on the GPU; the cost differs, and the battery page compares them. This page quotes no CPU percentages, because the ones vendors publish are unsourced.
Treat Lock Screen and screen saver claims as claims, because Apple documents none. As stated on two vendors’ own pages, checked on 7 October 2026: the free Aerial app says its beta native-wallpaper mode “keeps playing on the login screen after your Mac wakes”; Wallper, in the description of a page updated 28 January 2026, says it “covers the lock screen and screen saver too”. Test before you pay, and check four things in any app:
- when it pauses: screen asleep, a window covering the desktop, a full-screen app;
- which displays it covers;
- whether it claims the Lock Screen or the screen saver, and whether you can test that for free;
- how it is sold: the dated price comparison covers that, so this page quotes no prices for other apps.
Which one should you use? One table and four rules
| Type | When it moves | Where it shows | Cost and requirements |
|---|---|---|---|
| Dynamic Wallpapers (Apple) | Never: only its brightness shifts with the time of day | Desktop | Included; some need a download first (icon beside the name) |
| Aerial as wallpaper, macOS 26 and 27 | As you lock or unlock the Mac (Apple’s words); reviewers report it then holds a still frame | Desktop; by default the same aerial is also your screen saver | Included; download on first use |
| Aerial as wallpaper, macOS 14 and 15 | Never on the desktop (Apple: still images); slow motion only as a screen saver | Desktop (still) and Screen Saver | Included; “Show as wallpaper” and “Show as screen saver” toggles |
| Screen Saver (Apple) | Only while the Mac is idle; ends on a key press, mouse move or trackpad touch | Whole screen, hides the desktop; starts after the idle time you set, unless the display is off | Included; password delay set in Lock Screen settings |
| Live wallpaper (third-party app) | While the app draws, so whenever the desktop is visible | Behind windows and icons; Lock Screen or screen saver only if the app claims it (test it) | An app to install; GPU use depends on how it is built; Mac+: free tier, then Pro |
Four rules turn the table into a choice:
- The light should follow the day, nothing else. Choose Dynamic Wallpapers and leave the pop-up on Dynamic; if it will not shift, start with the diagnosis page.
- Apple’s footage, a moment of motion at lock and unlock, slow motion while idle. Choose an aerial; on macOS 26 and 27 one choice sets both by default. Examples: the Earth aerial that shows the aurora and the Underwater aerials.
- The desktop hidden when you walk away, a password when you return. Choose a Screen Saver and set the password requirement in Lock Screen settings; if it will not start, begin there.
- Motion while you work. Choose a live wallpaper app and run the four checks above; the free options compared is the place to start.
Where Mac+ fits: a live wallpaper app whose scenes are rendered, not filmed
In this page’s vocabulary, Mac+ is one example of the last row of the table: a live wallpaper app. It draws the desktop background itself, so the picture can keep moving behind your windows and icons while you work. It is not an Apple setting, not an aerial, not a Dynamic Wallpaper and not a screen saver.
Its 15 scenes are abstract and rendered live on the GPU with Metal, such as Flux (the one in the image above), Waves, Plasma or Rain. They are generated, not filmed: no clip of a real place plays, and none is a video on a loop. You can instead loop your own video or an image; that mode is a video loop by definition, and own video is a Pro feature. It stops drawing while the display sleeps or any app, a full-screen one included, sits over the desktop. It runs on Apple Silicon and Intel Macs under macOS 13 Ventura or later, renders locally and asks for no account.
The limits are the table’s limits. Mac+ leaves the Lock Screen and the login window alone, and nor is it a screen saver: no idle timer starts it and it never hides the desktop when you walk away. For those rows, Apple’s settings are the answer.
The free tier covers multi-display use, an image background, two widgets, six folder icons, eight palettes and six animated scenes. Pro adds the full set of 15 scenes, 44 palettes and your own video: €9.99 as a one-off payment or €1.99 a month after a seven-day trial (prices on the Mac+ site, checked 7 October 2026).
macOS 13 or later. Apple Silicon and Intel. Free download; Mac+ Pro €9.99 once or €1.99/month.
Frequently asked questions
Is a dynamic wallpaper the same as a live wallpaper on Mac?
No. In Apple’s pages a Dynamic Wallpaper changes only in light, following the time of day where you are. A live wallpaper is the trade’s name for a background an app draws and keeps moving while you work. Some sites use the two words as synonyms; Apple’s pages do not, and its Mac guide pages on the wallpaper, the screen saver and the Lock Screen never use the phrase “live wallpaper”.
Do aerial wallpapers move on the Mac desktop?
It depends on the macOS version. Apple’s Tahoe and Golden Gate pages say aerials “animate as you lock or unlock” the Mac; reviewers report a still frame afterwards. On Sonoma 14 and Sequoia 15 Apple’s guide calls the wallpaper version a still image and keeps the slow motion for the screen saver.
What is the difference between a wallpaper and a screen saver on Mac?
A wallpaper is the picture or colour shown on your desktop. A screen saver hides the desktop while you are away: it starts after the idle time you choose, unless the display is already off, and ends on any key press, mouse movement or trackpad touch. The Lock Screen is a third thing. Its settings cover security and timing, such as when a password is required.
Can I use a screen saver as my Mac wallpaper?
On Sonoma and Sequoia, turning on “Show as wallpaper” in the Screen Saver pane gave you a still aerial image as wallpaper. On macOS 26 and 27 you pick the aerial under Wallpaper and, by default, it doubles as your screen saver. Apple’s Mac guide documents no way to run a third-party screen saver as a moving desktop; for that you need a live wallpaper app.
Is the Aerial app the same as Apple’s aerial wallpapers?
No. Apple’s aerials are a built-in category. Aerial, with a capital A, is a separate free, open-source app under the MIT licence. Its site, checked 7 October 2026, says it plays Apple’s aerial videos both as a screen saver and as a desktop wallpaper that moves, shows macOS 26+ on its download line and lists 4.1.7, released 5 October 2026, as the latest version. Its native wallpaper mode is labelled Beta, and the site also says “Built for macOS 15+”, so check the requirement before installing.
Is Mac+ a live wallpaper or a screen saver?
A live wallpaper app. It draws 15 scenes behind your windows and icons while you work, and stops drawing while the display sleeps or any app sits over the desktop. The Lock Screen and the login window stay as they are, and it is not a screen saver.
Keep reading
Sources
- Apple Support — Customize the wallpaper on your Mac (macOS 27 Golden Gate, the guide’s default version)
- Apple Support — Wallpaper settings on Mac
- Apple Support — Use a screen saver on your Mac
- Apple Support — Change Screen Saver settings on Mac (macOS Sequoia 15)
- Apple Support — Change Lock Screen settings on Mac
- Apple Support — Customize the desktop picture on your Mac (macOS Mojave 10.14)
- Apple Newsroom — macOS Sonoma brings new capabilities for elevating productivity and creativity (5 June 2023)
- Aerial — official site (version 4.1.7, MIT licence, checked 7 October 2026)