Comparison

Molecular Constructor vs Chemistry Master Periodic

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

Head to head
About

Molecular Constructor

Create and optimize 3D molecular models. This free software allows users to design molecules and refine their geometry simultaneously. A more advanced desktop version is also available.

Highlights
  • Build molecules in 3D
  • Design molecular structures
  • Optimize geometry
  • Free software
  • Desktop version available
Features
Read full description

Molecular Constructor is a free 3D modeling software for building molecules. Using this application user can design a molecule and optimize its geometry at the same time. The more advanced desktop version can be found at the project website: http://molconstr.com/

About

Chemistry Master Periodic

This app uses AI to help you master chemistry. It can solve exercises by taking a photo, balance reactions, and create study tools like flashcards and mind maps from your notes. Access interactive periodic and solubility tables, plus unlimited quizzes.

Highlights
  • AI-powered exercise resolution
  • Automatic chemical reaction balancing
  • Flashcard and mind map creation
  • Interactive periodic table
  • Unlimited quizzes
  • Detailed step-by-step explanations
Features
Read full description

Chemistry Master - The Chemistry Revolution is Here BOOM! Chemistry will no longer be a problem. Chemistry Master transforms your smartphone into a powerful chemistry assistant powered by artificial intelligence. ABSOLUTE NOVELTY: Take a photo of your exercise and AI guides you to the solution! Chemistry Master is a REVOLUTION for studying chemistry: - INSTANT RESOLUTION of any chemistry exercise - AUTOMATIC BALANCING of chemical reactions - DETAILED EXPLANATION of each step - AUTOMATIC CREATION of flashcards and mind maps from your photos - CONVERSION of notes into study tools ADVANCED TOOLS always at hand: - SUPER INTERACTIVE periodic table - COMPLETE solubility table - PERSONALIZED flashcards for effective studying - INTERACTIVE mind maps for immediate connections - UNLIMITED quizzes to test yourself EXPLOSIVE CONTENT covering THE ENTIRE program: MATTER: - The Atom and its structure - Atomic and Mass Numbers - Periodic Table of Elements - Orbitals and quantum numbers - Ions and their behavior CHEMICAL BONDS: - The Molecule - Chemical Bonding - Covalent Bond - Dative Bond - Ionic Bond - Metallic Bond - Secondary or Weak Bonds CHEMICAL COMPOUNDS: - Acidity scale and pH - Oxidation number and valence - Basic and acidic oxides - Hydroxides - Acids and Hydracids - Salts - Peroxides LAWS OF CHEMISTRY: - Chemical reactions - The Mole - Atomic Mass Unit - Atomic and Molar Mass - Lavoisier's Law - Proust's Law - Dalton's Law STATES OF MATTER: - Gaseous, liquid and solid states - Phase transitions - Ideal gas laws - Boyle's Law - Gay-Lussac's Laws - Avogadro's Law - Real gas law WOW! All this in a single app. Chemistry Master is the assistant you need to master chemistry and achieve EXTRAORDINARY results. DOWNLOAD NOW and transform the way you study chemistry! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Molecular Constructor3 screens
Chemistry Master Periodic4 screens

Verdict

The call

The clearest difference is rating: Chemistry Master Periodic at 4.9 against Molecular Constructor's 4.0. Chemistry Master Periodic also leads on update cadence (every 2 months vs every 12 months) and review sentiment (90% vs 76%). Molecular Constructor's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price, ratings volume 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. Chemistry Master Periodic sells 7 in-app purchases, starting at $3.99 per month. Molecular Constructor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Chemistry Master Periodic holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 65 and 51 respectively. Written reviews point the same way: 76% of Molecular Constructor's written reviews are positive against 90% of Chemistry Master Periodic's.

UpkeepUpdate frequency

Molecular Constructor ships an update every 12 months, Chemistry Master Periodic every 2 months. The most recent releases landed on November 4, 2026 and November 12, 2026 respectively.

Scorecard7 real differences · 3 level
Molecular Constructor versus Chemistry Master Periodic: the parameters behind the verdict, then further details
ParameterMolecular ConstructorChemistry Master Periodic
PriceFreeFree
Rating4.0 (65 ratings)4.9 (51 ratings) — better
Positive reviews75.8% of reviews90.1% of reviews — better
Number of ratings65 — better51
Update frequencyEvery 12 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.5
Further details — not scored
Size10 MB123 MB
Age rating4+4+
DeveloperAlexander TeplukhinCarlo Terracciano

Customer experience

Molecular Constructor

All ratings52 ratings
Positive73.1%
Neutral7.7%
Negative19.2%
Written reviews62 reviews
Positive75.8%
Neutral14.5%
Negative9.7%

Chemistry Master Periodic

All ratings51 ratings
Positive98.0%
Neutral2.0%
Negative0.0%
Written reviews71 reviews
Positive90.1%
Neutral5.6%
Negative4.2%

In-app purchases

None

Molecular Constructor

No in-app purchases

7 purchases

Chemistry Master Periodic

Subscriptions5
  • Chemistry · Monthly$3.991 Month
  • Chemistry · Monthly$5.991 Month
  • Chemistry · Annual$8.991 Year
Show 2 more
  • Chemistry · Annual1 Year trial2 variants$24.991 Year
  • Chemistry · Annual$24.991 Year
One-time2
  • Lifetime Subscription Chem$29.99
  • Periodic Table & Reactions$99.99

Questions

Is Molecular Constructor free?
Molecular Constructor is free to download, with no in-app purchases.
Is Chemistry Master Periodic free?
Chemistry Master Periodic is free to download, with in-app purchases available.
Which has better reviews, Molecular Constructor or Chemistry Master Periodic?
Chemistry Master Periodic is rated higher. Molecular Constructor averages 4.0 out of 5 from 65 ratings, while Chemistry Master Periodic averages 4.9 from 51 ratings.
Do Molecular Constructor or Chemistry Master Periodic have ads?
Chemistry Master Periodic shows ads; Molecular Constructor does not.
Which is updated more often, Molecular Constructor or Chemistry Master Periodic?
Molecular Constructor ships an update every 12 months, and Chemistry Master Periodic every 2 months. Most recently, Molecular Constructor was updated on November 4, 2026 and Chemistry Master Periodic on November 12, 2026.

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