# Atomas vs NASA NeMO

The clearest difference is in-app purchases: NASA NeMO at none against Atomas's 5. NASA NeMO also leads on update cadence (every 8 days vs monthly). Atomas's advantage is ratings volume (3.4K vs 599) and iOS requirement (9.0 vs 11.0). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Atomas sells 5 one-off in-app purchases. NASA NeMO asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Atomas against 4.9 for NASA NeMO. That said, the two scores are not equally well evidenced: Atomas has 3.4K ratings behind it against 599, so its average is the more settled of the two. Written reviews are what separate them: 94% of Atomas's written reviews are positive against 89% of NASA NeMO's.

Atomas ships an update monthly, NASA NeMO every 8 days. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Atomas | NASA NeMO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (3.4K ratings)](https://appshunter.io/ios/app/atomas/id953603155/reviews) | **[4.9 (599 ratings)](https://appshunter.io/ios/app/nasa-nemo-net/id1506604930/reviews)** |
| Number of ratings | **3.4K** | 599 |
| Positive reviews | **93.9% of reviews** | 89.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 33 MB | 590 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Max Gittel](https://appshunter.io/developer/764787722) | [NASA](https://appshunter.io/developer/355542146) |

## What reviewers say

### Atomas

[App page](https://appshunter.io/ios/app/atomas/id953603155)

Combine atoms to create new elements in this addictive puzzle game. Strategize to prevent your universe from overflowing and unlock special charms to aid your progress. Compete with friends for the highest score.

**Highlights:** Atom fusion mechanics, Element creation, Chain reactions, Lucky charms, Multiple game modes, Score comparison

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads & Instant Modes Unlock | $0.99 | one-time |
| 2 Antimatter | $1.99 | one-time |
| 5 Antimatter | $2.99 | one-time |
| 10 Antimatter | $4.99 | one-time |
| 12 Antimatter | $4.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 👍 Simple and intuitive
- 🔒 No ads or in-app purchases
- 🧠 Helps learn periodic table
- 🎨 Polished and visually appealing

**What reviewers complain about**

- 🐛 Occasional glitches and bugs
- 🤔 Difficulty can feel arbitrary at times
- 🎨 Similar atom colors can be confusing
- 🔍 Lack of clear tutorials or explanations

**Reported bugs**

- Undo button not working as expected
- Game crashing when sharing scores
- Inconsistent atom behavior with certain power-ups

**Requested features**

- More game modes and challenges
- Ability to save progress and sync across devices
- Option to adjust atom colors and sizes
- Achievements and leaderboards


### NASA NeMO

[App page](https://appshunter.io/ios/app/nasa-nemo-net/id1506604930)

Contribute to ocean conservation by classifying coral reefs through interactive 3D painting. Explore vibrant underwater environments, learn about marine life, and see your contributions directly support NASA's research.

**Highlights:** 3D coral painting, Explore underwater worlds, Learn about oceans, Augmented reality (AR) mode, Contribute to NASA research

**In-app purchases:** none

**What reviewers like**

- 👍 Fun and relaxing gameplay
- 🌍 Helps save the coral reefs
- 🎓 Educational and informative
- 🤖 Contributes to AI training
- 🎨 Enjoyable coloring experience

**What reviewers complain about**

- 🐛 Occasional crashes and bugs
- 🤔 Unclear instructions or tutorial
- 🖱️ Difficult controls without a mouse
- 🕰️ Slow data loading and processing

**Reported bugs**

- Unable to close 2D mode menu
- Freezing or crashing during gameplay
- Inconsistent data loading and connectivity

**Requested features**

- More detailed coral identification guides
- Ability to skip tutorial or intro
- Customizable UI and controls
- Progress tracking and achievements


## Frequently asked questions

### Is Atomas free?

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

### Is NASA NeMO free?

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

### Which has better reviews, Atomas or NASA NeMO?

NASA NeMO is rated higher. Atomas averages 4.8 out of 5 from 3.4K ratings, while NASA NeMO averages 4.9 from 599 ratings.

### Do Atomas or NASA NeMO have ads?

Neither Atomas nor NASA NeMO shows ads.

### Which is updated more often, Atomas or NASA NeMO?

Atomas ships an update monthly, and NASA NeMO every 8 days. Most recently, Atomas was updated on October 17, 2026 and NASA NeMO on October 15, 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.*