# Hydra vs Sipling

The clearest difference is in-app purchases: Hydra at none against Sipling's 1. Hydra also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sipling sells 1 in-app purchase, starting at $0.99 per month. Hydra asks for nothing beyond the download.

## The numbers

| Metric | Hydra | Sipling |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 11 days |
| Size | 23 MB | 29 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Obadah Almheidat](https://appshunter.io/developer/6783860344) | [TUGBA GOKCEK](https://appshunter.io/developer/6786047130) |

## What reviewers say

### Hydra

[App page](https://appshunter.io/ios/app/hydra/id6783860342)

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

**In-app purchases:** none


### Sipling

[App page](https://appshunter.io/ios/app/sipling-water-tracker/id6789913186)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sipling Pro | $0.99 | per month |


## Frequently asked questions

### Is Hydra free?

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

### Is Sipling free?

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

### Do Hydra or Sipling have ads?

Sipling shows ads; Hydra does not.

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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.*