# SSA vs DM Service

The clearest difference is ads: DM Service at none against SSA's shown. DM Service also leads on iOS requirement (13.0 vs 15.5). SSA's advantage is update cadence (every 2 weeks vs every 2 months). On price, in-app purchases and device support there is nothing between them.

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

SSA ships an update every 2 weeks, DM Service every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | SSA | DM Service |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 125 MB | 45 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wanbang Star Charge Technology Co., Ltd.](https://appshunter.io/developer/998809810) | [Zhejiang Xingyue Electric Appliance Co., Ltd.](https://appshunter.io/developer/1389646775) |

## What reviewers say

### SSA

[App page](https://appshunter.io/ios/app/ssa-star-service-application/id1565488797)

This tool streamlines the installation, operation, and maintenance of new energy equipment. It offers standardized processes, professional guidance, and intelligent management of spare parts and operations. The app supports online settlement and provides access to operating data and firmware upgrades.

**Highlights:** Standardized work ticket processing, Professional task execution guidance, Spare parts management, Online settlement, Firmware upgrade and configuration, Operating data and log query

**Features:** Vision Pro support

**In-app purchases:** none


### DM Service

[App page](https://appshunter.io/ios/app/dm-service/id6479637545)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SSA free?

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

### Is DM Service free?

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

### Do SSA or DM Service have ads?

SSA shows ads; DM Service does not.

### Which is updated more often, SSA or DM Service?

SSA ships an update every 2 weeks, and DM Service every 2 months. Most recently, SSA was updated on November 3, 2026 and DM Service on November 4, 2026.

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