Dingly vs Dioptra

Dingly reads the calendars you choose and rings a real alarm before each meeting, so you're never caught off guard. - Real alarms: Dingly uses the same system alarms as the Clock app, so they ring even when your iPhone is on silent or in a Focus, and even if Dingly isn't open. - Two alerts per meeting: 15 minutes and 1 minute before by default. Change either one. - Meetings that start at the same time share one alarm. - Snooze or stop right from the alarm. - Skip a single meeting with a swipe; it won't ring on any of your devices. - Join Zoom, Google Meet, Teams or Webex calls right from the list or the countdown. - A countdown to your next meeting in the Dynamic Island and on the Lock Screen, in your calendar's color. It appears with the first alarm, keeps counting down to the last one, and goes away when you stop it. Only ever one per meeting. - Choose from a set of pleasant alarm sounds. - Ignore meetings by keyword (like "lunch"), skip weekends, and pick which calendars to watch. - See your meetings for the days ahead, and keep up with your calendar automatically. A Shortcuts action can sync it any time. - Pause for a vacation, get a morning summary, ask Siri or use the widget to join or skip a meeting, and get a warning if a meeting's video link changes. - Add a short note to any meeting; it shows highlighted on its alarm and countdown. - Ring earlier for the meetings that need it: choose a first alert for one meeting, a whole series, or every meeting with a keyword like "kid pickup". - Works on iPhone, iPhone Duo and iPad, in English, Chinese, French, German, Italian, Japanese, Korean, Portuguese, Russian and Spanish. Requires iOS 26.

A 3D model viewer for iPhone and iPad that takes measurement seriously. Open a file, turn it over, and tap two points on the surface to get a real distance. FORMATS • glTF — .glb and .gltf • USD — .usdz, .usdc, .usda and .usd • STL — 3D prints and CAD exports, read in millimetres and turned upright • PLY — scans and photogrammetry, with per-vertex colour • VRM • Interactive pages — an .html export keeps its own controls and runs as it was built MEASURE • Tap two points for a true distance • Take as many measurements as you need; they stay listed with the model • Switch between metric and imperial whenever you like • Set what one file unit means: metres, centimetres, millimetres, inches or feet INSPECT • Orbit, pan and zoom, or leave it turning on its own • Wireframe, to see how a mesh is built • Studio, light and dark backgrounds • Play embedded animations, one clip at a time • Model info: width, height and depth, plus triangles, vertices, meshes, materials, textures, nodes and animations • Share a snapshot of the view ORGANISE • Folders, which appear in the Files app exactly as they do here • Search, sort by name, type or date, and switch between a list and a grid • Rename, drag a model onto a folder to file it, or delete it • Bring models in with the picker, from another app's share sheet, or by dropping them into the Dioptra folder in Files SAMPLES Six models come with the app, one for each kind of file it opens, all built to real-world scale: the ancient sighting instrument the app is named for, a Roman surveyor's groma, a sundial's gnomon, a tripod foot in millimetres, a surveyed patch of terrain, and an interactive plan of sight lines. PRIVATE BY DEFAULT No account, no sign-in, no cloud, no tracking and no ads. Your models stay on your device and everything works offline.