CaptioAI Subtitle Creator

Contains adsIn-app purchases
50+
Downloads
Content rating
Everyone
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About this app

CaptioAI is a mobile app that automatically generates subtitles for your videos using artificial intelligence. It transcribes spoken audio into text, allows easy editing and customization, and lets you export the final result — all directly on your device, with no internet required.

CaptioAI includes a built-in speech recognition system that processes audio quickly and accurately. Because all processing happens on your phone, your data stays private and the app works even without a network connection.

Once a video is transcribed, you can review the subtitles and make manual adjustments if needed. The interface is designed to make editing simple and intuitive, even for longer clips.

To help match the style of your content, CaptioAI allows you to customize how subtitles appear. You can change the font, size, color, and position of the text before exporting the final video.

CaptioAI is designed to be fast, lightweight, and easy to use, giving you full control over your subtitles without relying on cloud-based tools or external services.
Updated on
Jul 31, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

What’s new

What's new:

- Automatic subtitles powered by on-device AI.
- New themes to personalize your experience.
- Adjustable subtitle font size.
- New themes
- Built-in subtitle editing tools.
- Bug Fix

Enjoy a smarter, more customizable captioning experience!

App support

About the developer
DANIEL SOUZA DA FONSECA
dfcode@gmail.com
R. São Gonçalo do Piauí, 508 - A Casa A - 508-A CASA A Itaquera SÃO PAULO - SP 08295-295 Brazil

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