# Penguini vs Hydrostate

The clearest difference is review sentiment: Penguini at 64% against Hydrostate's 0%. Penguini also leads on in-app purchases (none vs 10) and ads (none vs shown). Hydrostate's advantage is update cadence (every 2 weeks vs every 10 months) and rating (4.1 vs 3.7). On price, ratings volume and device support there is nothing between them.

Both are free to download. Hydrostate sells 10 one-off in-app purchases. Penguini asks for nothing beyond the download.

Hydrostate holds the better App Store score, 4.1 against 3.7. Both are backed by a comparable volume of ratings — 6 and 9 respectively. Written reviews complicate that: 64% of Penguini's written reviews are positive against 0% of Hydrostate's, so the app with the better star average is not the one people write more warmly about.

Penguini ships an update every 10 months, Hydrostate every 2 weeks. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Penguini | Hydrostate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (6 ratings)](https://appshunter.io/ios/app/penguini/id391300261/reviews) | **[4.1 (9 ratings)](https://appshunter.io/ios/app/hydrostate-water-network-3d/id6755589355/reviews)** |
| Number of ratings | 6 | **9** |
| Positive reviews | **63.6% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 415 MB |
| Requires iOS | **8.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Truncated Tales Limited](https://appshunter.io/developer/357427122) | [AAM GAMES LTD](https://appshunter.io/developer/1745519754) |

## What reviewers say

### Penguini

[App page](https://appshunter.io/ios/app/penguini/id391300261)

Help a penguin rescue stolen eggs from seagulls by bouncing between icebergs. Navigate melting habitats, avoid polar bears, and find a magical seal for protection. Compete on global leaderboards and unlock achievements.

**Highlights:** Penguin rescue gameplay, Bouncing between icebergs, Egg collection, Obstacle avoidance (seagulls, polar bears), Habitat challenges (melting icebergs), Game Center integration, Global leaderboards and achievements

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

**In-app purchases:** none


### Hydrostate

[App page](https://appshunter.io/ios/app/hydrostate-water-network-3d/id6755589355)

Build and manage a city's water system by connecting pipes and optimizing flow. Solve challenging puzzles, upgrade your network, and expand your water empire in a vibrant 3D environment. Enjoy relaxing yet engaging gameplay as you ensure every building receives water.

**Highlights:** Build and connect water pipes, Manage water flow and pressure, Solve logic and planning puzzles, Upgrade and expand city water network, Experience beautiful 3D environments, Relaxing and engaging gameplay

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cash 300k | $0.99 | one-time |
| Cash 300K | $0.99 | one-time |
| 75 Gems | $0.99 | one-time |
| Auto Cash Collector | $1.99 | one-time |
| Remove ads discount | $1.99 | one-time |
| Cash 1M | $2.99 | one-time |
| Remove Pop up ads | $2.99 | one-time |
| 1M Cash | $2.99 | one-time |
| 250 Gems | $2.99 | one-time |
| Starter Pack | $4.99 | one-time |


## Frequently asked questions

### Is Penguini free?

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

### Is Hydrostate free?

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

### Which has better reviews, Penguini or Hydrostate?

Hydrostate is rated higher. Penguini averages 3.7 out of 5 from 6 ratings, while Hydrostate averages 4.1 from 9 ratings.

### Do Penguini or Hydrostate have ads?

Hydrostate shows ads; Penguini does not.

### Which is updated more often, Penguini or Hydrostate?

Penguini ships an update every 10 months, and Hydrostate every 2 weeks. Most recently, Penguini was updated on October 16, 2026 and Hydrostate on October 8, 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.*