# Hydro vs Camera Lights

The clearest difference is in-app purchases: Hydro at none against Camera Lights's 1. Hydro also leads on update cadence (monthly vs every 9 months). Camera Lights's advantage is iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Camera Lights sells 1 one-off in-app purchase. Hydro asks for nothing beyond the download.

Hydro ships an update monthly, Camera Lights every 9 months. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Hydro | Camera Lights |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Size | 7 MB | 3 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Patrick](https://appshunter.io/developer/385768716) | [业豪 蒙](https://appshunter.io/developer/1701385500) |

## What reviewers say

### Hydro

[App page](https://appshunter.io/ios/app/hydro-aquatic-data-hub/id6477622181)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Camera Lights

[App page](https://appshunter.io/ios/app/camera-lights/id6739806401)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vip | $0.99 | one-time |


## Frequently asked questions

### Is Hydro free?

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

### Is Camera Lights free?

Camera Lights is free to download, with in-app purchases available.

### Do Hydro or Camera Lights have ads?

Neither Hydro nor Camera Lights shows ads.

### Which is updated more often, Hydro or Camera Lights?

Hydro ships an update monthly, and Camera Lights every 9 months. Most recently, Hydro was updated on September 22, 2026 and Camera Lights 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.*