BCTO vs Siftata

BCTO是一款由博通光电有限公司开发的用于智能终端的天文软件。 BCTO分为两部分： 1. 电子星图部分。电子星图模拟一个实时3D的星空环境，调用智能终端内部传感器计算出用户当前的手机视角所能看到的星空天象。电子星图内置多达30000颗天体数据，包括太阳系数据，88个星座数据，IC数据，Messier数据，NGC数据等等。 2. 控制部分。可以蓝牙空中接口链接到博通公司生产的无线版本的天文望远镜，实现对望远镜的无线操作。用户可以在BCTO上对望远镜执行星体校准，转动控制，搜索和跟踪天体等多种操控功能。 另外可以配合电子星图，通过可视化选择星体后实时搜索跟踪天体目标。

Siftata helps you clean up your photo library with a faster, calmer workflow. Instead of opening photos one by one, Siftata lets you review your library with simple swipe gestures. Keep the photos you want, move unwanted photos into a pending delete queue, and confirm deletion only when you are ready. Siftata is designed to be simple, elegant, and efficient. It focuses on one common problem: photo libraries grow quickly, but deleting photos is slow and tiring. Siftata makes the process easier by reducing friction and helping you stay in flow. Privacy is central to the app. Siftata works locally on your device and does not require an account or an internet connection. Your photos are not uploaded to a server. Key features: • Swipe-based photo review • Fast keep/delete workflow • Pending delete queue before final deletion • Restore photos before confirming deletion • Local-first and privacy-friendly • No account required • Free to use • Multilingual support Siftata is built for people who want a cleaner photo library without complexity, ads, subscriptions, or cloud processing.