# HydSupply vs Ferroamp

The clearest difference is update cadence: Ferroamp at every 9 days against HydSupply's every 11 months. HydSupply's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.4). On price, 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.

HydSupply ships an update every 11 months, Ferroamp every 9 days. The most recent releases landed on September 16, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | HydSupply | Ferroamp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 9 days** |
| Size | 65 MB | 75 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Colix Systems AB](https://appshunter.io/developer/1287246609) | [Ferroamp AB](https://appshunter.io/developer/1685154836) |

## What reviewers say

### HydSupply

[App page](https://appshunter.io/ios/app/hydsupply/id1615580101)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ferroamp

[App page](https://appshunter.io/ios/app/ferroamp/id6458734783)

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

**In-app purchases:** none


## Frequently asked questions

### Is HydSupply free?

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

### Is Ferroamp free?

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

### Do HydSupply or Ferroamp have ads?

Neither HydSupply nor Ferroamp shows ads.

### Which is updated more often, HydSupply or Ferroamp?

HydSupply ships an update every 11 months, and Ferroamp every 9 days. Most recently, HydSupply was updated on September 16, 2026 and Ferroamp on September 19, 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.*