zerotoneroAcademy · Lesson 8 of 9 · 6 min
CTAs that convert
One clear ask, said and shown, with a reason to act now. Learn to end your promo with a CTA people actually follow.
The CTA (call to action) is the moment you tell the viewer what to do next: download, tap the link in bio, try it free. Developers often treat it as an afterthought, a mumbled 'check it out' as the video fades. But the CTA is the only part of the video that turns attention into installs. It deserves as much planning as the hook.
One video, one ask. 'Download it, follow me, join the Discord, and leave a comment' is four asks, and viewers usually do none of them. Pick the single action that matters most for this video. For most app promos that is 'try it' or 'download it'. Save the other asks for other videos.
Be specific about the action and where to do it. 'Check it out' is vague. 'Search for the app name on the App Store' or 'tap the link in my bio' is an instruction. If there is a free tier or trial, say so, because 'free' removes the biggest hesitation. Do not promise anything that is not true right now (a feature on the roadmap, a price you might change).
Say it and show it. Speak the CTA in your A-roll and put it on screen as a text overlay, with the app icon if you can. Hold it long enough to read. Muted viewers only get the overlay, and sound-on viewers remember better when they both hear and see it.
Give a reason. The strongest CTAs tie back to the hook: 'Stop forgetting subscriptions. Free to try, link in bio.' That closes the loop from the promise at the start to the action at the end. A soft CTA can also appear earlier for people who are already convinced, as long as the main one stays at the end and the earlier one does not interrupt the story.
Finally, match the CTA to where the video lives. 'Link in bio' makes sense on a social profile. It makes no sense in an App Store preview, where the download button is right there. Each platform has its own natural next step, which is the subject of the next lesson.
Key points
- One video, one ask.
- Be specific: 'tap the link in bio', not 'check it out'.
- Say it and show it, with the app icon, long enough to read.
- Tie the CTA back to the hook so the loop closes.
Good: One clear ask that closes the loop
A made-up subscription tracker. The CTA echoes the hook, is said and shown, and asks for exactly one thing.
- 16s 'Find yours' echoes the hook, so the ask feels like the obvious next step.
- 17s One action, one place: 'link in my bio'.
- 18s 'Free' removes the main hesitation, and it is true.
- 19s Overlay with the app icon stays up for the whole beat.
Bad: The four-way ask
Same app. The ending crams in four requests, none specific, with no overlay. Viewers do none of them.
- 16s 'So yeah, check it out': vague, and no hint of where.
- 18s Four asks in one breath. Pick one.
- 19s No overlay: muted viewers never learn what to do.
- 21s A logo sting replaces the one thing that should be on screen: how to get the app.
Common mistakes
- Asking for several actions at once.
- Vague CTAs like 'check it out' with no place to go.
- Saying the CTA but never showing it on screen.
- Rushing the CTA into the last second or covering it with a logo sting.
- Promising things that are not true yet, like a feature on the roadmap.
- Using 'link in bio' where there is no bio, such as an App Store preview.