Three seconds of progress-bar tick, two seconds of spinner loop, then a soft success chime — that's the audio choreography of every loading screen since Windows XP, and getting the timing right matters more than the sounds themselves. These 33 loading sound effect clips supply the full set: progress bar ticks at multiple speeds, spinner loops short enough to repeat without obvious cycles, processing hums for longer waits, load-complete chimes in major and minor registers, and the slightly downbeat error tones for when loading fails.
App developers and UX designers reach for the spinner loops first because they tie to visible animation. Game UI work pulls the progress ticks and the completion chimes, layered with subtle reverb that reads as 'system' rather than 'physical'. Loading screen content for explainer videos and demos uses the longer loading bar audio that carries through a narrated walk-through. For prototype testing, the contrast between success and error chimes communicates state faster than any visual. Free to download for apps, games and tutorials — no signup, no licence chase.