An app preview video is a short video (15-30 seconds on iOS, up to 30s on Google Play) that demonstrates the app in action. On iOS it autoplays muted on the product page as soon as the user arrives — there's no tap-to-play; the preview starts playing instantly. On Google Play the promo video requires a tap-to-play (it's behind the screenshots). This autoplay difference makes the iOS preview a much higher-stakes asset than the Google Play one.
The winning 15-30 second video structure
- First 3 seconds — hook: clear visual that shows what the app does. No logo intros, no slow ramp. The user is one swipe away from leaving; you have 3 seconds to earn the next 12.
- Seconds 3-15 — demonstrate value: show the core flow that solves the user's problem. Real app UI, real interaction, real results. Avoid stock-footage transitions.
- Seconds 15-25 — reinforce differentiation: what's special vs alternatives. Specific features, specific outcomes, specific moments.
- Last 3-5 seconds — close: brand reinforcement and clear value summary. Avoid generic "download now" CTAs (the user is already on the product page).
Why iOS previews are so high-leverage: autoplay means every product-page visitor sees the start of the video automatically. A good first 3 seconds lifts CVR; a slow / unclear / off-message first 3 seconds drops CVR. The asymmetry is what makes preview design hard — you can hurt your CVR with a bad preview. Most apps would do better with no video than with a weak one.
iOS technical constraints
- Up to 3 preview videos per localized product page.
- Captured on iPhone or iPad — must be recorded directly from a real iOS device (no Mac screen recording, no After Effects fakery), per Apple's review guidelines.
- 15-30 seconds in length. Apple enforces strictly.
- Portrait or landscape orientation matching the screenshot orientation.
- Audio plays when the user un-mutes; design assuming muted-first viewing.
Google Play constraints
- 1 promo video per store listing (or per custom store listing).
- YouTube-hosted — the video must be a YouTube link, public, monetization disabled.
- No length restriction but 30-60 seconds works best (full play-through is rare).
Localization: don't just translate captions — re-create the video for each major language with native UI screenshots and culturally-relevant context. Generic English-language previews with translated subtitles convert worse than native-language previews. Trade-off: cost. Most apps localize previews for the top 3-5 languages, run translated-subtitle versions for the rest.
How many apps actually ship a preview video
Only 10.1% of iOS apps ship an App Preview video — the most under-adopted ASO asset there is. Adoption climbs steeply with download volume and varies enormously by category.
Preview video adoption by category
| Category | Adoption rate |
|---|---|
| Game | 30.3% |
| Media & Entertainment | 10.1% |
| Education & Knowledge | 8.8% |
| Productivity & Tools | 4.7% |
| Social & Communication | 4.7% |
| Lifestyle & Well-being | 3% |
Games lead adoption near 30% — video communicates gameplay far better than static shots — while most utility and content categories sit in the low single digits. For the ~90% with no video, it is a near-empty competitive field.