Comparison

Atomas vs NASA NeMO

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Atomas

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
Read full description

Atomas is a fascinating puzzle game, which you can learn in seconds but will entertain you for weeks. The perfect game for your spare time! Your little universe starts with hydrogen atoms only but with the help of the energy rich plus atoms you are able to fusion two hydrogen atoms into one helium atom, 2 helium atoms into one lithium atom and so on. Your primary goal is to create the valuable elements like Gold, Platinum and Silver. But watch out, if your universe is overfilled with too many atoms it will cause a big crunch and the game is over. One way to prevent this is to build up long symmetries in your atoms and start big chain reactions. From time to time minus atoms appear, use them for absorbing and replacing atoms within your universe or sacrifice them for a plus atom. You see Atomas is not hard to play, but if you want to get to the top you'll need a good strategy, which keeps your atoms organized. By creating new elements like oxygen or copper you unlock lucky charms, which effect the game in various ways and adjust it to your strategy. What Atomas offers you: - 4 different game modes - simple but addicting game mechanics - 124 different atoms to create - 12 different lucky charms - exciting challenges - compare your scores with friends via GameCenter - share your score on twitter and Facebook - quick tutorial The developers high score is 66 534. Can you do better?

About

NASA NeMO

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
Read full description

Join the NASA team by helping us classify coral reefs! Travel the world, make friends with ocean wildlife, and classify real coral by painting in 3D. The classifications you create go directly to NASA and help protect the oceans! * 3D PAINTING - Relax and fingerpaint, or use an Apple Pencil, to express yourself and help the environment * UNDERWATER WORLDS - Explore the open ocean meeting clownfish, sea turtles, whale shark and more * LEARN AS YOU GO - Learn about the oceans and how to classify coral as you go, no prior knowledge needed * PLAY IN AR - View the world’s corals in your own house on any augmented reality enabled device

Screenshots

Atomas4 screens
NASA NeMO4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard5 real differences · 5 level
Atomas versus NASA NeMO: the parameters behind the verdict, then further details
ParameterAtomasNASA NeMO
PriceFreeFree
Rating4.8 (3.4K ratings)4.9 (599 ratings) — better
Positive reviews93.9% of reviews — better89.1% of reviews
Number of ratings3.4K — better599
Update frequencyMonthlyEvery 8 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS9.0 — better11.0
Further details — not scored
Size33 MB590 MB
Age rating4+4+
DeveloperMax GittelNASA

Customer experience

Atomas

All ratings3,385 ratings
Positive96.7%
Neutral1.9%
Negative1.4%
Written reviews1,470 reviews
Positive93.9%
Neutral3.5%
Negative2.5%

NASA NeMO

All ratings599 ratings
Positive97.7%
Neutral1.5%
Negative0.8%
Written reviews110 reviews
Positive89.1%
Neutral5.5%
Negative5.5%

User reviews

Atomas

From 3.4K App Store ratings

What we love

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

Room to improve

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

NASA NeMO

From 599 App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Atomas

Reported bugs

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

Requested features

4 requests
  • 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

Reported bugs

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

Requested features

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

In-app purchases

5 purchases

Atomas

One-time5
  • No Ads & Instant Modes Unlock$0.99
  • 2 Antimatter$1.99
  • 5 Antimatter$2.99
Show 2 more
  • 10 Antimatter$4.99
  • 12 Antimatter$4.99
None

NASA NeMO

No in-app purchases

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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