# Shark io vs Double Head Shark Attack

The clearest difference is rating: Shark io at 4.4 against Double Head Shark Attack's 3.7. Shark io also leads on in-app purchases (none vs 12) and review sentiment (68% vs 39%). On price, ads and device support there is nothing between them.

Both are free to download. Double Head Shark Attack sells 12 in-app purchases, starting at $0.99 per 7 days. Shark io asks for nothing beyond the download.

Shark io holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 878 and 235 respectively. Written reviews point the same way: 68% of Shark io's written reviews are positive against 39% of Double Head Shark Attack's.

## The numbers

| Metric | Shark io | Double Head Shark Attack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (878 ratings)](https://appshunter.io/ios/app/shark-io/id1128300347/reviews)** | [3.7 (235 ratings)](https://appshunter.io/ios/app/double-head-shark-attack/id1422700485/reviews) |
| Number of ratings | **878** | 235 |
| Positive reviews | **67.5% of reviews** | 38.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 201 MB | 567 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Tap2Play, LLC (Ticker: TAPM)](https://appshunter.io/developer/1219946891) | [BigCode Games Pvt Ltd](https://appshunter.io/developer/1254845485) |

## What reviewers say

### Shark io

[App page](https://appshunter.io/ios/app/shark-io/id1128300347)

Control a hungry shark and wreak havoc on everything in sight, from marine life to unsuspecting humans and boats. Compete with other players in multiplayer mode to get the highest score. Customize your shark and enjoy realistic environments and smooth gameplay.

**Highlights:** Hunt marine life and humans, Attack boats and ships, Multiplayer mode for competition, Shark customization, Realistic 3D environments, Smooth joystick controls, Real water physics

**In-app purchases:** none

**What reviewers like**

- 👍 Fun and engaging game
- 👍 Enjoyable shark simulation
- 👍 Addictive gameplay
- 👍 Great for shark lovers

**What reviewers complain about**

- 🐛 Frequent glitches and freezing issues
- 🔍 Lack of content and features
- 🎨 Outdated or poor graphics
- 🎮 Challenging or unresponsive controls

**Reported bugs**

- Game freezing at level 9
- Unresponsive attack button
- Compatibility issues with older devices

**Requested features**

- More shark varieties and skins
- Larger and more diverse environments
- Improved graphics and visuals
- Additional game modes and levels
- Online multiplayer functionality


### Double Head Shark Attack

[App page](https://appshunter.io/ios/app/double-head-shark-attack/id1422700485)

Engage in thrilling underwater combat as unique shark species. Hunt prey, power up, and customize your sharks with fun accessories in this action-packed simulation game. Compete with friends in multiplayer mode and test your knowledge with brainy quizzes.

**Highlights:** Multiplayer mode, Diverse shark species, Underwater hunting, Shark customization, Brainy quiz challenges, Shark power-ups and upgrades

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $0.99 | per 7 days |
| Monthly Subscription | $3.99 | per month |
| Yearly Subscription | $33.99 | per year |
| Unlock 2nd Shark | $0.99 | one-time |
| Kettle Full Of Diamonds | $1.99 | one-time |
| Pot Full Of Diamonds | $2.99 | one-time |
| Tub Full Of Diamonds | $4.99 | one-time |
| Pond Full Of Diamonds | $8.99 | one-time |
| Lake Full Of Diamonds | $17.99 | one-time |
| Unlock All Sharks SubDiscount | $19.99 | one-time |
| Abundance Full Of Diamonds | $35.99 | one-time |
| Unlock All Sharks | $44.99 | one-time |

**What reviewers like**

- ✨ Fun gameplay
- 🤩 Amazing graphics
- 🎮 Interesting concept
- 👍 Good pass time
- 🥳 Enjoyable and relaxing

**What reviewers complain about**

- 👎 Ripoff of Hungry Shark
- 💸 Pay-to-win mechanics
- 😩 Forced ads
- 🐌 Slow loading times
- 📉 Bad graphics

**Reported bugs**

- Game crashes frequently
- Game does not load
- Loading screen stuck
- Game kicks user out
- Missions not clearing

**Requested features**

- Make a tutorial
- Add more maps
- Add more fish/sharks
- Add free mode
- Add a subscription option for no ads


## Frequently asked questions

### Is Shark io free?

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

### Is Double Head Shark Attack free?

Double Head Shark Attack is free to download, with in-app purchases available.

### Which has better reviews, Shark io or Double Head Shark Attack?

Shark io is rated higher. Shark io averages 4.4 out of 5 from 878 ratings, while Double Head Shark Attack averages 3.7 from 235 ratings.

### Do Shark io or Double Head Shark Attack have ads?

Neither Shark io nor Double Head Shark Attack shows ads.

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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.*