For an app demo, sound effects should make interactions easier to follow without competing with the product or narration. Use a small, consistent set of subtle cues for taps, transitions and important feature reveals.

Decide which interactions need sound

Start by watching the screen recording without audio. Mark moments where a sound would clarify an action or help a viewer notice a change. A tap effect can support a button press, while a soft transition may help separate two features.

Do not add a sound to every cursor movement or screen change. Repetition can make a demo feel like a game interface and distract from what the software actually does.

Pick a consistent sound palette

Choose effects that belong together. If one click is soft and rounded, avoid pairing it with a harsh, high-pitched confirmation tone unless the contrast is deliberate. A consistent palette helps the demo feel polished.

Useful sound qualities to consider:

• Short or sustained
• Bright or warm
• Soft or assertive
• Natural or synthetic
• High, mid or low emphasis

Use these descriptors when searching a sound-effects library. Audition the effect at the scale and playback volume the audience is likely to use.

Time each cue to the action

A click that arrives before the button press can feel disconnected. Align the onset of the effect with the visible interaction, then check whether the cue masks a spoken explanation.

For a feature reveal, a brief sound can mark the moment. Keep it short enough that the audience’s attention returns to the screen and narration. If the demo uses captions, make sure sound is not the only way important information is communicated.

Make the voice and product audio clear

If there is voiceover, keep it in front. Lower music and effects while the narrator explains a feature. On a screen recording, also check the built-in app audio: notification sounds, device alerts or system sounds may be distracting.

Test on laptop speakers and a phone. A low, subtle effect that sounds balanced on headphones may disappear on small speakers, while a bright effect may become piercing.

Confirm permissions before publishing

Check the current licence for the exact audio and the intended use, including whether the demo is commercial, sponsored or client work. Keep a copy of the licence details with the project. RouteNote Licensing’s current plans and terms are listed on its official site; verify the applicable plan and scope before using any track or effect. licensing.routenote.com

For more, see the RouteNote Licensing articles on licensing mistakes and finding your licence.