AA Lab is the one-person studio of iOS developer Aliaksandr Andrashuk. Four apps, each built for one job: splitting long videos, making video collages, rolling end credits and adding subtitles.
What do you need to do?
Every app is free to download on the App Store. Three of them have their own sites with step-by-step guides.
Video splitter
Cut a long video into clips by number of parts, by length or by exact timecode — ready for Instagram Stories, Reels, TikTok, YouTube Shorts and WhatsApp Status.
Video collage maker
Put several videos in one frame — side by side, in a split screen, a grid or picture-in-picture. Pick a template, drop in your clips and post.
End credits maker
Roll movie-style end credits for films, YouTube videos, school projects and presentations. Type the names, style the text and export a credits clip for any editor.
Subtitles & captions
Add subtitles to a video in a few taps. SubtitlerKit turns speech into timed captions that you can edit, style and export right on the video.
Each app opens straight into its task, so you get from a raw clip to an exported video in minutes, not after a tutorial.
Cutting, rendering and export happen right on your iPhone, iPad or Mac. No upload queue and no waiting for a server.
Split and combine 4K footage with HDR intact, or export credits in Apple ProRes 4444 with a transparent background.
Every app is free to download. Optional in-app purchases unlock pro features when you need them.
AA Lab is the app studio of Aliaksandr Andrashuk, an independent iOS developer. I design, build and support every app myself, so your feedback goes straight to the person who writes the code.
It started in 2023 with a small subtitles app. Since then I keep building tools for video jobs that take too long on a phone. The apps get regular updates, and many new features begin as requests from people who use them.
Questions, bug reports or an idea for a feature? Write to me directly — messages about any of the apps land in my inbox.