# MartleyRocks vs HydroCrowd

The clearest difference is update cadence: HydroCrowd at every 3 months against MartleyRocks's every 46 months. 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.

MartleyRocks ships an update every 46 months, HydroCrowd every 3 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | MartleyRocks | HydroCrowd |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 3 months** |
| Size | 65 MB | 61 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Brooks](https://appshunter.io/developer/526071845) | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) |

## What reviewers say

### MartleyRocks

[App page](https://appshunter.io/ios/app/martleyrocks/id1006570855)

**Features:** macOS Compatibility

**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 MartleyRocks free?

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

### Is HydroCrowd free?

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

### Do MartleyRocks or HydroCrowd have ads?

Neither MartleyRocks nor HydroCrowd shows ads.

### Which is updated more often, MartleyRocks or HydroCrowd?

MartleyRocks ships an update every 46 months, and HydroCrowd every 3 months. Most recently, MartleyRocks was updated on October 14, 2026 and HydroCrowd on October 14, 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.*