Comparison

Elementium vs Molecules that changed the World

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

Molecules that changed the World

Explore the scientific facts and captivating stories behind molecules that have shaped our world. Discover how basic compounds like water and complex synthetics like aspirin influenced culture, civilization, and life itself.

Highlights
  • Scientific facts about influential molecules
  • Stories of cultural and civilizational impact
  • Covers basic and synthetic compounds
  • Explains chemical background
  • Details historical and cultural influence
Features
Read full description

The "Molecules that changed the World" App is meant to convey the scientific facts and interesting stories of molecules that changed our culture, course of civilisation and in short, the world. Among the represented molecules are such basic compounds like water, carbon dioxide, ammonia, which not only influenced the way we think about resources, climate and food production but also affected the development of early life on Earth, and synthetic complex compounds such as nitroglycerin, polyethylene and aspirin. App is aiming at telling you more about the chemical background of such molecules and their influence onto the historical and cultural developments and the life as we know it. This app is a translation of the interactive 3D installation "Molecules that Changed the World" by Ljiljana Fruk and Bernd Lintermann, which was designed at ZKM/Institute for Visual Media to accompany the "Molecular Aesthetics" Symposium held at ZKM | Centre for Art and Media, Karlsruhe, Germany in 2011.

Screenshots

Elementium4 screens
Molecules that changed the World4 screens

Verdict

The call

The clearest difference is rating: Elementium at 4.6 against Molecules that changed the World's 3.3. Elementium also leads on review sentiment (75% vs 50%) and ratings volume (576 vs 4). Molecules that changed the World's advantage is in-app purchases (none vs 9) and iOS requirement (8.0 vs 16.1). On price, update cadence, 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. Molecules that changed the World asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Elementium holds the better App Store score, 4.6 against 3.3. That said, the two scores are not equally well evidenced: Elementium has 576 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 75% of Elementium's written reviews are positive against 50% of Molecules that changed the World's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 12, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
Elementium versus Molecules that changed the World: the parameters behind the verdict, then further details
ParameterElementiumMolecules that changed the World
PriceFreeFree
Rating4.6 (576 ratings) — better3.3 (4 ratings)
Positive reviews75.0% of reviews — better50.0% of reviews
Number of ratings576 — better4
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, Apple TViPhone, iPad, iPod
Requires iOS16.18.0 — better
Further details — not scored
Size752 MB79 MB
Age rating4+4+
DeveloperSamuel SpencerZKM | Zentrum fuer Kunst und Medientechnologie Karlsruhe

Customer experience

Elementium

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

Molecules that changed the World

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

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

Molecules that changed the World

Not enough reviews yet to summarise bugs or requests.

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

Molecules that changed the World

No in-app purchases

Questions

Is Elementium free?
Elementium is free to download, with in-app purchases available.
Is Molecules that changed the World free?
Molecules that changed the World is free to download, with no in-app purchases.
Which has better reviews, Elementium or Molecules that changed the World?
Elementium is rated higher. Elementium averages 4.6 out of 5 from 576 ratings, while Molecules that changed the World averages 3.3 from 4 ratings.
Do Elementium or Molecules that changed the World have ads?
Neither Elementium nor Molecules that changed the World shows ads.
Which is updated more often, Elementium or Molecules that changed the World?
Elementium ships an update every 3 weeks, and Molecules that changed the World every 3 weeks. Most recently, Elementium was updated on October 12, 2026 and Molecules that changed the World on September 23, 2026.

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