Happy Atoms vs Osmo Coding Duo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Happy Atoms
This interactive tool combines a physical modeling set with a digital app to teach chemistry concepts. It allows users to explore molecules hands-on, understand bonding forces, and discover relationships between molecular structure and properties. Designed to make chemistry more engaging and accessible for students.
- Physical and digital interactive learning
- Hands-on molecule discovery
- Explore bonding forces
- Experiment with element combinations
- Understand molecular structure and properties
Read full descriptionHide full description
Happy Atoms is the physical and digital teaching tool that lets you discover the world of molecules in an intuitive, hands-on way! This interactive learning tool combines a digital app with a physical modeling set that lets students from 4th grade through college approach chemistry from a different angle. Happy Atoms requires the use of the Happy Atoms modeling set for full play. The sets are available at www.happyatoms.com and at many educational retailers! Chemistry is an incredibly important subject that many students never fully grasp. Knowledge of chemistry is necessary to solve many real-world problems, but the way chemistry is taught now often fails to capture students’ imaginations, discouraging experimentation and discovery. Happy Atoms aims to change that by offering a chemistry learning experience that sets itself apart. * See the difference between elements * Feel the forces that bond them together * Experiment with ways to combine them * Discover the relationships between molecular structure and properties To report issues and support please email: support@happyatoms.com Funded by the Institute of Education Sciences U.S. Department of Education (ED-IES-15-C-0025)
Osmo Coding Duo
This app offers a collaborative coding adventure where two players team up to solve logic puzzles and rescue pets. It introduces real-world coding concepts through engaging challenges and a fun narrative.
- Multistep logic problems
- Collaborative play for two
- Coding concept introduction
- Pet rescue adventure
- Osmo character interaction
Read full descriptionHide full description
Team up with a friend to solve coding puzzles and rescue pets! The most advanced game in Osmo’s Coding Family, Coding Duo uses multistep logic problems to introduce kids to real-world coding concepts. FEATURES: Advanced Puzzles for Coding Fans Get challenged by multistep logic problems that will stretch minds and introduce them to coding concepts that are used in the real world. Collaborative Play Friends and family can play together side by side to solve coding puzzles. Use teamwork and strategy to work together towards a common goal. A Fun Rescue Adventure with Osmo Characters A scientist has lost his pets and needs your help to find them. Solve the coding challenges using your favorite Osmo characters and rescue pets across several islands and return them to their home. NOTES: * Requires the Osmo Base and Coding Blocks. Each sold separately or as part of Osmo Coding Starter Kit or Osmo Coding Family Bundle. * Compatible with most iPads. Please see our device compatibility list here: https://support.playosmo.com/hc/articles/115010156067 *About Osmo Osmo is using the screen to create a new healthy, hands-on learning experience that promotes creativity, problem-solving and social interaction. We do this with our reflective artificial intelligent technology.
Screenshots
Verdict
The clearest difference is update cadence: Happy Atoms at weekly against Osmo Coding Duo's every 2 months. Happy Atoms also leads on monetization model (free vs free with in-app purchases) and review sentiment (76% vs 53%). On price, rating, ratings volume 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.0 for Happy Atoms against 3.9 for Osmo Coding Duo. Both are backed by a comparable volume of ratings — 145 and 145 respectively. Written reviews are what separate them: 76% of Happy Atoms's written reviews are positive against 53% of Osmo Coding Duo's.
Happy Atoms ships an update weekly, Osmo Coding Duo every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Happy Atoms | Osmo Coding Duo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (145 ratings) — better | 3.9 (145 ratings) |
| Positive reviews | 76.4% of reviews — better | 52.6% of reviews |
| Number of ratings | 145 | 145 |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 746 MB | 309 MB |
| Age rating | 4+ | 4+ |
| Developer | Schell Games | Tangible Play |
Customer experience
Happy Atoms
Osmo Coding Duo
Bugs and requests
Happy Atoms
Reported bugs
48 issues- Bugs with specific compounds (Syn-propanethial-s-oxide, gamma-aminobutryic acid)
- N 4 is weird, has nothing on it
- Robot covers the whole screen
- Camera gets the atom wrong (though manual correction exists)
- Atom limitation
Show 43 moreShow fewer
- Atom detector marking points are too big
- Some molecules are locked
- CH8 molecule has bugs (no name, render, copied from methane)
- L-ascorbic acid compound bug (screen opens and closes)
- Cannot make one molecule in oxygen land
- Scanner doesn't interpret atoms right
- App crashes
- App not scanning at all
- Doesn't scan regardless of light level
- Terrible programming
- Scanner has difficulty distinguishing between Silicon and Phosphorus
- Scanner is particular about selection point
- Scan feature is very limited
- App doesn't scan
- Crappy execution
- Identifies atoms incorrectly
- Bug: Camera error screen appears for CH8
- Bug: CH8 has no name, render, and element listing is copied from methane
- Bug: L-ascorbic acid compound cannot be opened
- Bug: Cannot make one molecule in oxygen land
- Bug: Scanner misinterprets atoms
- Bug: App crashes
- Bug: App not scanning
- Bug: Scanner issues with Silicon/Phosphorus
- Bug: Scanner issues with selection point
- Bug: Scanner is limited
- Bug: App doesn't scan
- Bug: Incorrect atom identification
- Bug: CH8 molecule issues
- Bug: L-ascorbic acid issue
- Bug: Oxygen land molecule issue
- Bug: Scanner misinterpretation
- Bug: App not working
- Bug: Scanning not working
- Bug: Incompatible with latest iPad Pro
- Bug: Terrible programming
- Bug: Cannot scan at all
- Bug: Crashes
- Bug: Not compatible due to lack of updates
- Bug: App doesn't scan
- Bug: Nothing else to do if scan doesn't work
- Bug: Scanned oxygen app eight times, kept getting errors
- Bug: Identified atoms incorrectly
Requested features
28 requests- Include iron atom
- Expansion set for atom limitation
- Make atom detector smaller
- Add more atoms (e.g., Boron, Aluminum, noble gases)
- Add more quests
Show 23 moreShow fewer
- Add more continents for new atoms
- Voice option for molecule names
- Better camera controls
- Add a manual for element placement
- Option to not delete data when switching sets
- Add more molecules
- Add noble gas compounds
- Add ammonium compounds
- Add Iron, Aluminum, and Boron to atom sets
- Add more explosive atoms
- Add a 'disable tutorials' button
- Create own lab in spaceship
- Add quests to save the atom world
- Add all elements of period 4 (excluding transition elements)
- Add noble gases to molecules
- Add more atoms and molecules
- Add more content/continents
- Add more atoms like Lithium, Beryllium, Sodium, Magnesium
- Add Boron and Aluminum with specific ionic bonds and colors
- Add 2 more arms to Helium and 8 to Argon
- Add specific noble gas compounds
- Add more elements to complete first two rows
- Add more molecules to fill the map
Osmo Coding Duo
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Happy Atoms
No in-app purchases
Osmo Coding Duo
No in-app purchases
Questions
Is Happy Atoms free?
Is Osmo Coding Duo free?
Which has better reviews, Happy Atoms or Osmo Coding Duo?
Do Happy Atoms or Osmo Coding Duo have ads?
Which is updated more often, Happy Atoms or Osmo Coding Duo?
Other comparisons
