# D1 System — user reviews

> 2 indexed App Store user reviews of D1 System by China Security & Fire IOT Sensing Co., Ltd..

- Source: https://appshunter.io/ios/app/d1-system/id914724035/reviews
- App overview in markdown: https://appshunter.io/ios/app/d1-system/id914724035.md

## Most critical reviews (2 lowest-rated)

### 3/5 — D1

*2019-01-22, version 2.8*

APP easy to access and to use, send in real time notification about alarm status

### 5/5 — Good developmet

*2021-09-18, version 2.8*

App very easy to use, easy communication by MSN 

Pleas keep this App in App Store.

Regards

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-08.*