# Nebulous.io vs Specimen Zero

The clearest difference is price: Nebulous.io at Free against Specimen Zero's $1.99. Nebulous.io also leads on update cadence (every 2 weeks vs every 4 months) and ratings volume (2.6K vs 137). Specimen Zero's advantage is ads (none vs shown) and review sentiment (66% vs 54%). On rating, in-app purchases, monetization model and device support there is nothing between them.

Nebulous.io is free to download; Specimen Zero costs $1.99 up front. Nebulous.io sells 9 one-off in-app purchases and Specimen Zero sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.1 for Nebulous.io against 4.1 for Specimen Zero. That said, the two scores are not equally well evidenced: Nebulous.io has 2.6K ratings behind it against 137, so its average is the more settled of the two. Written reviews are what separate them: 54% of Nebulous.io's written reviews are positive against 66% of Specimen Zero's.

Nebulous.io ships an update every 2 weeks, Specimen Zero every 4 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Nebulous.io | Specimen Zero |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.1 (2.6K ratings)](https://appshunter.io/ios/app/nebulousio/id1069691018/reviews)** | [4.1 (137 ratings)](https://appshunter.io/ios/app/specimen-zero-horror/id1574175808/reviews) |
| Number of ratings | **2.6K** | 137 |
| Positive reviews | 54.1% of reviews | **66.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#96** |
| Size | 71 MB | 380 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Simplicial Software, LLC](https://appshunter.io/developer/1069691017) | [Cafe Studio Games AG](https://appshunter.io/developer/1574175810) |

## What reviewers say

### Nebulous.io

[App page](https://appshunter.io/ios/app/nebulousio/id1069691018)

Engage in a multiplayer game where you grow by consuming smaller entities and collecting dots. Avoid larger players while strategizing to become the biggest blob. Enjoy various game modes, customization options, and social features.

**Highlights:** Collect dots and gobble smaller players, Compete with up to 27 players online, Over 500 unlockable skins, Upload custom skins, Multiple game modes including FFA, Teams, and Capture the Flag, Clan system with Clan Wars, Offline single-player mode

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2,000 Plasma | $0.49 | one-time |
| 5,000 Plasma | $0.99 | one-time |
| 10,000 Plasma | $1.49 | one-time |
| Plasma Boost 7 Days | $2.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 10,000 Plasma | $4.99 | one-time |
| 50,000 Plasma | $4.99 | one-time |
| 100,000 Plasma | $7.49 | one-time |
| 500,000 Plasma | $24.99 | one-time |

**What reviewers like**

- 🎮 Engaging gameplay
- 🕹️ Fun game modes
- 🤝 Good for playing with friends
- 💎 Addictive and enjoyable
- 🕰️ Nostalgic for long-time players

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔧 Lack of updates and fixes for iOS users
- 🕹️ Unbalanced gameplay mechanics
- 🤝 Issues with teaming and cheating
- 💰 Expensive in-app purchases

**Reported bugs**

- Progression resets and lost account data
- Connectivity issues and server problems
- Glitches with power-ups and abilities
- Inconsistent performance on iOS devices
- Inability to change name or settings

**Requested features**

- Improved matchmaking system
- More game modes and customization options
- Ability to upload custom skins on iOS
- Better community features and moderation
- Reduced in-app purchase costs


### Specimen Zero

[App page](https://appshunter.io/ios/app/specimen-zero-horror/id1574175808)

**Currently charting:** #96 Top Paid · Action (US App Store)

Awaken in a mysterious, dangerous location after a kidnapping. Explore dark environments, solve puzzles, and collect items to find your escape. Team up with friends in online multiplayer to survive the horrors.

**Highlights:** Explore dark environments, Solve puzzles, Collect and use objects, Online multiplayer mode, Create private rooms, New Forest map

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lisa character | Free | one-time |
| Founders Pack | $0.99 | one-time |
| Marco character | $0.99 | one-time |
| Manuel character | $0.99 | one-time |
| Elsa character | $0.99 | one-time |
| James character | $0.99 | one-time |
| Yellow menu color | $0.99 | one-time |
| Gloria skin | $0.99 | one-time |
| Jorge skin | $0.99 | one-time |
| Daniel skin | $0.99 | one-time |


## Frequently asked questions

### Is Nebulous.io free?

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

### Is Specimen Zero free?

Specimen Zero costs $1.99, and also offers in-app purchases.

### Which has better reviews, Nebulous.io or Specimen Zero?

Nebulous.io is rated higher. Nebulous.io averages 4.1 out of 5 from 2.6K ratings, while Specimen Zero averages 4.1 from 137 ratings.

### Do Nebulous.io or Specimen Zero have ads?

Nebulous.io shows ads; Specimen Zero does not.

### Which is updated more often, Nebulous.io or Specimen Zero?

Nebulous.io ships an update every 2 weeks, and Specimen Zero every 4 months. Most recently, Nebulous.io was updated on November 6, 2026 and Specimen Zero on November 7, 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.*