CaptionKit (Captions for Video Caption Kit) is an iPhone video subtitle app developed by Appers Limited. Its App Store category is Photo & Video. It can be downloaded for free on the App Store and contains in-app purchases.
Purpose The official introduction positions it as "the ultimate app for quickly and easily creating subtitles for videos," suitable for content creators, influencers, or anyone who wants to improve the subtitle effect of their videos, with the goal of producing professional-quality subtitles within minutes.
Main capabilities
- Automatic subtitle generation: After selecting a video, the app processes it automatically. The developer states it supports more than 100 languages and uses its proprietary AI technology for text recognition to improve subtitle accuracy as much as possible.
- Subtitle templates and custom styles: It provides more than 20 ready-made subtitle templates, and users can also create reusable custom styles.
- Text editor: You can change the font, color, outline, and background, and add shadows.
- Subtitle animations: It provides multiple subtitle animation effects.
- Subtitle translation: Subtitles can be translated into different languages to expand the video's audience reach.
- Audio: You can add background music to the video and adjust the volume.
- Preview modes: You can preview how the video will appear on Instagram and TikTok and check whether the subtitle position will be blocked by the platform interface.
How to use The official description of the process is: after selecting a video, the app completes the rest of the processing, and then you adjust it through templates or custom styles, text editing, and animations. Version records show that subsequent updates added a subtitle distribution system based on "split first, then analyze," merge and split functions, and a Timing feature that allows manual control of the duration of each word; it also improved importing videos from the album, multilingual recognition, and subtitle text size.
Use cases Suitable for users who need to add and translate subtitles for videos on iPhone and adapt them for display on social platforms such as Instagram and TikTok.
Pricing The App Store shows that the app is free and contains in-app purchases. Examples listed on the page include Caption Editor for Video $5.99, Video Editor for captions $9.99, $24.99, $69.99. Specific subscription and purchase terms are subject to the in-app and official pages.
Ratings and user feedback The App Store rating is 4.4 (81 ratings). A 2025 A review dated June 9 stated that after the user paid, only one subtitle option suddenly remained, and the app malfunctioned such that subtitles could not be added to any video; after contacting customer service for more than a week, no reply was received, and the reviewer suggested not supporting the app until it is fixed.
Platforms and languages The official listing states it is only applicable to iPhone and has not been verified on macOS; it also lists that Mac requires macOS 13.3 or later and an Apple M1 chip or later, and Apple Vision requires visionOS 1.0 or later. Language support is EN and 16 other languages; the languages listed on the page include English, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Spanish, Thai, Turkish, Ukrainian, and Vietnamese.
Privacy The developer Appers Limited states that privacy practices may involve the following data processing: data used to track you across other companies' apps and websites (identifiers, usage data, diagnostics); data linked to your identity (identifiers, such as User ID and Device ID); data not linked to your identity (usage data such as product interaction, advertising data, and other usage data; diagnostics such as crash data, performance data, and other diagnostic data; user content such as photos or videos). Apple states that this information has not been verified by it.
Limitations and notes The official listing does not provide accessibility feature support information; one user review reported functional abnormalities after purchase and no response from customer service. The above price, rating, and feature information are all based on the provided materials, and other details are not provided at this time.
