# D1 System vs SinoMES

The clearest difference is iOS requirement: D1 System at 8.0 against SinoMES's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 1, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | D1 System | SinoMES |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 6 MB | 56 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [China Security & Fire IOT Sensing Co., Ltd.](https://appshunter.io/developer/914724038) | [SinoCAM Co.,Ltd.](https://appshunter.io/developer/1514565271) |

## What reviewers say

### D1 System

[App page](https://appshunter.io/ios/app/d1-system/id914724035)

This app allows users to remotely manage an SMS alarm system. It enables sending text messages for home protection, configuring alarm host parameters, and setting zone and RFID card names. Users can also manage SMS codes.

**Highlights:** Send SMS for home protection, Configure alarm host parameters, Set zone names, Set RFID card names, Manage SMS codes

**Features:** macOS Compatibility

**In-app purchases:** none


### SinoMES

[App page](https://appshunter.io/ios/app/sinomes/id1521130915)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is D1 System free?

D1 System is free to download, with no in-app purchases.

### Is SinoMES free?

SinoMES is free to download, with no in-app purchases.

### Do D1 System or SinoMES have ads?

Neither D1 System nor SinoMES shows ads.

### Which is updated more often, D1 System or SinoMES?

D1 System ships an update every 2 months, and SinoMES every 2 months. Most recently, D1 System was updated on October 1, 2026 and SinoMES on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*