# GSC Assistant vs PD BlackPearl

The clearest difference is device support: GSC Assistant at 3 against PD BlackPearl's 1. GSC Assistant also leads on iOS requirement (12.0 vs 16.0). 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.

GSC Assistant ships an update every 18 months, PD BlackPearl every 12 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | GSC Assistant | PD BlackPearl |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 12 months** |
| Size | 38 MB | 3 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Grandstream](https://appshunter.io/developer/951547763) | [PD WATER SYSTEMS LLC](https://appshunter.io/developer/1506605088) |

## What reviewers say

### GSC Assistant

[App page](https://appshunter.io/ios/app/gsc-assistant/id6447717839)

**In-app purchases:** none


### PD BlackPearl

[App page](https://appshunter.io/ios/app/pd-blackpearl/id6747769400)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GSC Assistant free?

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

### Is PD BlackPearl free?

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

### Do GSC Assistant or PD BlackPearl have ads?

Neither GSC Assistant nor PD BlackPearl shows ads.

### Which is updated more often, GSC Assistant or PD BlackPearl?

GSC Assistant ships an update every 18 months, and PD BlackPearl every 12 months. Most recently, GSC Assistant was updated on October 25, 2026 and PD BlackPearl on October 25, 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.*