Comparison

Elementium vs Happy Atoms

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

Head to head
About

Elementium

Access comprehensive information on every element of the periodic table. Explore detailed data, visualize trends, and utilize a built-in solubility calculator. Perfect for students and professionals needing quick, accurate chemical data.

Highlights
  • Detailed element information
  • Interactive periodic table
  • Dynamic filtering and trend visualization
  • Solubility calculator
  • Element image library
  • Bohr model visualizations
  • Home screen widgets
Features
Read full description

The premiere periodic table app for iPhone, iPad, and Apple TV. Quickly reference any element and all the information you need. Search for elements by on classification, phase, orbital, mass, or number. Dynamic filters help you understand periodic trends, like electronegativity, at a glance. Dive even deeper to get standard, frequently-used data points such as mass, electronegativity, radius, radioactivity, electron configuration, and more. LEARN Each element prominently features: • Symbol, name, and number • Atomic mass • Electronegativity • Electron configuration • Atomic radius • Melting and boiling points • Year of discovery • State at STP • Radioactivity Elements are also accompanied by discussions on its uses, discovery, and more. You can quickly find more information and publications about each element via links to Wikipedia, Science Direct®, and the American Chemical Society®. EXPLORE The periodic table is laid out in a clear, concise manner that adapts to the size of your screen. No more squinting at blurry images of the periodic table from web searches. Beautiful color-coding helps you quickly distinguish element classifications, phases at STP, electronegativity, and atomic radius. Trends and filtering help students who are learning chemistry to visualize patterns. SOLUBILITY CALCUALTOR A built in solubility calculator* answers all your, "is this soluble in that", questions. Just specify a solvent and a solute to check their compatibility. A solubility lookup table is also available for cross-referencing multiple combinations. VISUALIZATIONS See beautiful depictions of elements from raw to processed, and in other forms. The extensive library of images help you understand what your lab samples should look like, or may be helpful to students learning about chemistry.* SEARCH Search for elements by name, symbol, mass, or number from within Elementium™ or via Spotlight. Results are shown directly on the periodic table. Need faster access to element information? Search directly from Spotlight on the lock screen or home screen of your device. BOHR MODELS Animated Bohr models for each element help visualize how electrons are oriented around the nucleus.* WRITE & REPORT Academics and students writing reports and using data frequently in the classroom or the lab can simply tap on an aspect of an element to export its information.* HOME SCREEN WIDGETS Add the Periodic Table widget to your home screen for quick and easy reference to the Periodic Table. Or, try out the "random element" widget which is useful for students. ADDITIONAL NICE THINGS • Custom app icons • Set temperature and atomic radius to your preferred units • Search Spotlight for elements • Thoughtfully developed with accessibility in mind • A subscription is totally optional • No account required • Privacy focused (no tracking, no data collection) ------- ION Subscription Notice Subscription prices vary by duration and may vary by location. Subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled within 24-hours before the end of the current period. You can cancel anytime with your iTunes account settings. Manage your subscriptions in Account Settings after purchase. Privacy Policy: https://spencer-software.com/elementium/privacy Terms of Service: https://spencer-software.com/elementium/tos ------- *Requires in-app purchase. Elementium™ is a trademark of Samuel Spencer.

About

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.

Highlights
  • Physical and digital interactive learning
  • Hands-on molecule discovery
  • Explore bonding forces
  • Experiment with element combinations
  • Understand molecular structure and properties
Features
Read 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)

Screenshots

Elementium4 screens
Happy Atoms4 screens

Verdict

The call

The clearest difference is rating: Elementium at 4.6 against Happy Atoms's 4.0. Elementium also leads on ratings volume (602 vs 145). Happy Atoms's advantage is in-app purchases (none vs 9) and update cadence (weekly vs every 3 weeks). On price, review sentiment, ads and device support 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. Elementium sells 9 in-app purchases, starting at $1.99 per month. Happy Atoms asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Elementium holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 602 and 145 respectively. Written reviews complicate that: 75% of Elementium's written reviews are positive against 76% of Happy Atoms's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Elementium ships an update every 3 weeks, Happy Atoms weekly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
Elementium versus Happy Atoms: the parameters behind the verdict, then further details
ParameterElementiumHappy Atoms
PriceFreeFree
Rating4.6 (602 ratings) — better4.0 (145 ratings)
Positive reviews75.0% of reviews76.4% of reviews — better
Number of ratings602 — better145
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, Apple TViPhone, iPad, iPod
Requires iOS16.110.0 — better
Further details — not scored
Size752 MB746 MB
Age rating4+4+
DeveloperSamuel SpencerSchell Games

Customer experience

Elementium

All ratings576 ratings
Positive91.5%
Neutral3.3%
Negative5.2%
Written reviews32 reviews
Positive75.0%
Neutral6.3%
Negative18.8%

Happy Atoms

All ratings132 ratings
Positive75.0%
Neutral3.0%
Negative22.0%
Written reviews55 reviews
Positive76.4%
Neutral3.6%
Negative20.0%

User reviews

Elementium

From 602 App Store ratings

What we love

  • 👍 User-friendly and intuitive interface
  • 📚 Comprehensive element information and data
  • 🎨 Beautiful, clean, and visually appealing design
  • 🔗 Helpful Wikipedia and external resource links
  • 📖 Excellent for educational purposes and studying

Room to improve

  • 💰 Expensive subscription model for premium features
  • 🔐 Paywall blocking key features and element images
  • 📺 Intrusive ads and purchase prompts on startup
  • 🎨 Poor color contrast on metalloid background text
  • 📱 Crashes on older devices (iPhone 6G iPod Touch, iPhone XS Max)

Happy Atoms

From 145 App Store ratings

What we love

  • 💡 Educational and fun
  • 👍 Highly recommended
  • 🤩 Amazing game
  • 💯 10/10 rating
  • ✨ Interactive learning

Room to improve

  • 🐛 Bugs and glitches
  • 🤔 Some elements missing
  • 🤷‍♀️ Repetitive gameplay
  • 😠 Atom limitation
  • 😵 Confusing at times

Bugs and requests

Elementium

Reported bugs

5 issues
  • App crashes on startup and when tapping elements
  • Crashes on older iOS devices and iPod Touch
  • Molar mass not visible in iPhone landscape orientation
  • Intrusive purchase prompt that's difficult to dismiss
  • Rating request spam appearing too early in user experience

Requested features

5 requests
  • Element images and visual representations
  • One-time purchase option instead of subscription
  • Zoom out to view entire periodic table at once
  • Better display of molar mass on iPhone in landscape mode
  • More detailed information and content

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 more
  • 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 more
  • 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

In-app purchases

9 purchases

Elementium

Subscriptions4
  • ION, 1 month1 Month trial$1.991 Month
  • ION, 3 Months3 Days trial$3.993 Months
  • ION, 6 months$5.996 Months
Show 1 more
  • ION, 1 year$9.991 Year
One-time5
  • Export Data$0.99
  • Bohr Models$1.99
  • Advanced Sorting$2.99
Show 2 more
  • Visual Elements$3.99
  • Advanced Tools$4.99
None

Happy Atoms

No in-app purchases

Questions

Is Elementium free?
Elementium is free to download, with in-app purchases available.
Is Happy Atoms free?
Happy Atoms is free to download, with no in-app purchases.
Which has better reviews, Elementium or Happy Atoms?
Elementium is rated higher. Elementium averages 4.6 out of 5 from 602 ratings, while Happy Atoms averages 4.0 from 145 ratings.
Do Elementium or Happy Atoms have ads?
Neither Elementium nor Happy Atoms shows ads.
Which is updated more often, Elementium or Happy Atoms?
Elementium ships an update every 3 weeks, and Happy Atoms weekly. Most recently, Elementium was updated on October 24, 2026 and Happy Atoms on October 21, 2026.

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