380V vs Survey C
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
380V
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对电力系统运行设备进行远程监控,对重要数据或报警信息等进行实时推送。 基于后端云平台系统对能耗数据采集与分析,通过移动端设备实时查看能耗数据,变化曲线图,实时抄读数据等。 可查看历史数据进行同环比分析;可实时对设备进行远程控制,及时处理报警、预警问题。
Survey C
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Professional applications for surveying engineers working on electrical, water, transportation, and telecommunications projects, with support for exporting DXF files for opening in AutoCAD (points, text, roads, and contour lines). Survey One and Survey C-Plus form a comprehensive application suite for surveying, design, supervision, and field documentation, suitable for a wide range of engineering projects. The suite provides complete surveying and design capabilities, including DXF (AutoCAD) export. No computer, Google Earth, AutoCAD offsets, or Civil 3D are required — all workflows are handled directly on your iPhone. Main Features SURVEY ONE: • Survey and mark point coordinates • Record detailed information for each point • Capture unlimited images per point, recorded directly at the marked location • Support recording point content using icons • Export NNT files (modern survey data format) • Export KML files (compatible with Google Earth and Windows) • Support deleting and editing points SURVEY C-PLUS: • Receive shared files from any source • Convert KML files to NNT format while preserving data integrity • Export DXF files for opening in AutoCAD • High-speed file processing and publishing, significantly reducing project time (from days to minutes) • Full layer support: points, text, blocks, roads, and road offsets • Support survey lines up to 25 km with high accuracy Who is it for? • Transportation • Power and energy • Surveying and geodesy • Construction and infrastructure • Telecommunications Particularly suitable for the design and supervision of construction projects. Why choose Survey One and Survey C-Plus? • Covers core requirements for engineering and construction projects • Easy to use • More cost-effective compared to similar solutions • Fast, compact, and accurate • Opens large files smoothly • Does not collect user data Survey One and Survey C-Plus are reliable tools for surveying, design, and supervision of construction projects.
Screenshots
Verdict
The clearest difference is in-app purchases: 380V at none against Survey C's 1. 380V also leads on iOS requirement (10.0 vs 17.6). On price there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Survey C sells 1 one-off in-app purchase. 380V asks for nothing beyond the download.
| Parameter | 380V | Survey C |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Weekly |
| Ads | — | No |
| In-app purchases | No — better | Yes |
| Devices | — | iPhone — better |
| Requires iOS | 10.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 12+ |
| Developer | 叶飞 张 | Ngoc Tung Nguyen |
In-app purchases
380V
No in-app purchases
Survey C
- Premium$200.00









