4K UniPlay is a lightweight, easy‑to‑use local audio and video player and file manager. It supports mainstream video and audio formats, makes importing simple, and delivers smooth playback—ideal for study, binge‑watching, and listening.

【Main function】
1. Core Playback
- Supports most common audio and video formats. Video: avi, mkv, mov, mp4, mpg, 3gp, webm, wmv, m4v, mpeg, rm, rmvb, ogv, vob, amv, flv. Audio: aac, flac, mp3, ogg, m4a, wav, ape, wma, opus.
- 0.5x–2.0x speed control, scrubbing, portrait/landscape switching, and gesture adjustments for brightness/volume.
- Vinyl‑style animation and background playback for a more immersive music experience.

2. Import & Transfer
- One‑tap import via Photos, Files app, and the system Share Sheet.
- Local Wi‑Fi web transfer: upload/download files directly from a desktop browser.
- Device‑to‑device transfer within the app, enabling faster and safer file exchange.

3. File Management
- Create folders, rename, move, copy, delete, sort, and batch select for efficient organization.

4. Private Video Management
- Built‑in Private Folder to securely manage sensitive videos, protected with biometric lock.

5. Personalization & Compatibility
- Follows system Dark Mode with multiple theme styles.
- Language switching for Chinese (Simplified/Traditional) and English.