# BSG for SDG vs HydroCrowd

The clearest difference is update cadence: BSG for SDG at every 9 days against HydroCrowd's every 3 months. HydroCrowd's advantage is iOS requirement (12.0 vs 15.6). On price, ads, 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.

BSG for SDG ships an update every 9 days, HydroCrowd every 3 months. The most recent releases landed on October 9, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | BSG for SDG | HydroCrowd |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Size | 46 MB | 61 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bharat Soka Gakkai](https://appshunter.io/developer/1635329364) | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) |

## What reviewers say

### BSG for SDG

[App page](https://appshunter.io/ios/app/bsg-for-sdg/id1635329362)

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

**In-app purchases:** none


### HydroCrowd

[App page](https://appshunter.io/ios/app/hydrocrowd/id6449194122)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BSG for SDG free?

BSG for SDG is free to download, with no in-app purchases.

### Is HydroCrowd free?

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

### Do BSG for SDG or HydroCrowd have ads?

Neither BSG for SDG nor HydroCrowd shows ads.

### Which is updated more often, BSG for SDG or HydroCrowd?

BSG for SDG ships an update every 9 days, and HydroCrowd every 3 months. Most recently, BSG for SDG was updated on October 9, 2026 and HydroCrowd on September 28, 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.*