星瞰视界 vs Maps Ruler

星瞰视界，一款随身携带的专业级地理空间信息平台。它将高精度的三维数字地球、丰富的卫星影像库与便捷的查询订购流程融为一体，旨在为规划、勘察、研究及相关领域的专业人员，提供高效、直观的时空数据服务入口。在星瞰视界中，不仅可以流畅浏览多尺度、多源的地图与影像底图，进行精准的量测与标注，更能通过其核心的“影像商城”功能，直接解决数据获取的痛点。您只需在地图上交互式框选关注区域，系统即可自动匹配时间、云量等条件，筛选出可用的历史或最新卫星影像。选中目标数据提交意向订单后，我们的专业团队将迅速对接，为您提供从数据确认、商务洽谈到定制交付的全流程支持，让宝贵的卫星数据真正变得触手可及。我们致力于将环天智慧的时空大数据能力，转化为您掌上简洁而强大的工具，帮助您更敏捷地洞察世界，支撑更科学的决策。

Maps Ruler is a practical map measurement tool for distance, area, perimeter, circles, and route planning. MEASURE ON ANY VISIBLE MAP • Measure distance with two or more points • Calculate area and perimeter with three or more points • Draw a circle by setting its center and radius • Tap points or draw continuously to trace paths, boundaries, fields, plots, properties, and custom shapes • Edit points, inspect segment distances, and use undo or redo while you work LOCATION SUPPORT • Find your current position on the map • Measure places on the map without being physically there SAVE AND ORGANIZE YOUR WORK • Save, name, reopen, and update measurements • Review recent sessions and saved records • Switch between normal, satellite, and terrain map views • Search for places and addresses • Choose metric, imperial, or nautical units, including meters, kilometers, miles, yards, feet, hectares, acres, and more SHARE AND EXPORT Export map data in KML, KMZ, GeoJSON, or GPX formats for compatible map, GIS, Google Earth, and GPS apps. Back up and restore saved records when you need to transfer them. USE MAPS RULER FOR • Fields, farms, orchards, pastures, gardens, and plots • Property boundaries, fence lines, and perimeters • Walking, running, hiking, cycling, swimming, and boating routes • Golf holes, fairways, and target distances • Preliminary planning for landscaping, construction, roofs, solar layouts, and site work • Ponds, lakes, reservoirs, and coastlines • Roads, access routes, paths, and other custom shapes MAPS RULER PRO Upgrade for an ad-free experience, unlimited saved measurements, circle and precision tools, professional GIS export, and backup and restore. Monthly and yearly options are available. Prices and trial availability may vary by region. Maps Ruler does not require an account. Saved measurements and preferences remain on your device unless you choose to export or share them. Map results depend on map data, zoom level, and point placement. Current-location accuracy depends on the GPS signal. Maps Ruler is intended for practical map-based measurements and preliminary estimates. For legal boundaries or professional surveying, use certified survey data and equipment. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/