4K UniPlay vs XCalc

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.

XCalc — 一款计算器与私密空间二合一的宝藏应用 首次进入是完整的科学计算器，输入密码后秒变你的专属私密空间，纯本地数据应用，保证私密性，满足你日常计算与隐私保护的双重需求。 一、 科学计算器 标准/科学双模式，支持复杂数学运算 界面清爽，操作流畅，满足学习与工作场景 二、 私密空间 私密视频：导入加密存储，外界无法查看 私密图片：安全保存你的私人照片 私密便签：记录只属于你的文字笔记 多款精美皮肤主题，自由切换 内置多种图标可选，个性切换 支持 iPhone 和 iPad。