How to make an app promo video from screen recordings

Guide · October 2026

If you built an app, you already have everything you need for a promo video: the app. A short screen recording, a voice explaining one problem it fixes, and big captions. No actors, no motion designer.

1. Pick one job the app does

Not a feature tour. One thing a person wants to get done, start to finish. For a grocery list app: “add everything for tonight’s dinner in 10 seconds”. People scroll fast, so it has to be one clear thing.

2. Record 3–5 short clips

Use the phone’s built-in screen recorder (iOS: Control Center → Screen Recording; Android: Quick Settings → Screen record).
Turn on Do Not Disturb so no notifications pop up, and use clean demo data.
Keep each clip 2–5 seconds: open, tap, result. Move your finger slower than feels natural.
Record the “before” too: the messy notes app, the 14 open tabs. Contrast sells.

3. Script it in 4 lines

Hook: the problem, said like a person. “I used to forget half the groceries.”
Show: “So I made a list that sorts itself by aisle.”
Proof: one thing that’s easy to see on screen. “Type it once, it’s grouped.”
Ask: “It’s free on the App Store.”

4. Pick a format that fits the clip

Format	Good for
App demo	Phone frame on a colored background, step-by-step. Clear and simple.
Before / after	Old way vs. your app, split in time.
POV	“POV: you finally have a list that…” Feels native on TikTok.
Listicle	“3 apps that…”, with yours as one of them.
UGC ad	Talking over the recording like a regular user.

5. Edit

Put the recording inside a phone frame if you’re on a 9:16 canvas, so it doesn’t look like a cropped screenshot.
Captions word by word, high contrast. Most people are on mute.
Keep text away from the bottom and right edge on TikTok (that’s where the UI sits).
15–30 seconds total. End on the app icon and one line.

You can do all of this in any free editor. It just takes a while to line up the phone frame, the captions and the cuts, and longer when you change a line.

Doing it with UGC Reel Kit

UGC Reel Kit has the five formats above as templates (app demo, before/after, POV, listicle, UGC ad), plus three for physical products. You drop in your screen recordings or screenshots, type what the voice says and what’s on screen, and it builds the video: phone frame, word-by-word captions, a free in-browser voice or your own recording, and 9:16, 4:5 or 1:1. Export is an MP4 rendered on your laptop.

Frame from the app demo template: a phone showing a grocery list app on a yellow background — The app demo template, with the made-up sample app “Mise”.

If you’re a developer, the Developer plan ($59) includes the full React + Remotion source, so you can change the templates, batch-render from a spreadsheet, or run it on your own server.

One note: the editor needs Chrome or Edge on a laptop. You can’t edit on a phone.

The short version: UGC Reel Kit is a form in your browser. Add photos or screen recordings, type what the voice should say, pick a template, export an MP4. It costs $24 once (no monthly fee, no watermark, 14-day refund).

See pricing

More guides

How to make UGC ads for free How to make a product video for TikTok from photos