# Molecular Constructor — Build molecules in 3D > Free 3D software for designing and optimizing molecular structures. (iPhone/iPad app by Alexander Teplukhin.) - Source: https://appshunter.io/ios/app/molecular-constructor/id1299401504 (this page in markdown: same URL + `.md`) - Developer: [Alexander Teplukhin](https://appshunter.io/developer/1299401503) - Category: Education - Price: Free - Rating: 3.90/5 from 52 App Store ratings · 60 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 10 MB - Languages: American English - Released: 2017-10-23 - Data updated: 2026-08-29 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/molecular-constructor/id1299401504/reviews.md ## What is Molecular Constructor? 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/ ## Key features - Build molecules in 3D - Design molecular structures - Optimize geometry - Free software - Desktop version available ## Recent user reviews (10 of 60) All indexed reviews: https://appshunter.io/ios/app/molecular-constructor/id1299401504/reviews.md ### 5/5 — I love this *2026-07-11, version 1.5.1* this was very useful for my organic chemistry class! I passed with an A due to this app. i love sweetie fox btw~ ### 3/5 — fine *2026-03-18, version 1.5.1* you have to make a molecule in the center of the map for it to be where you place it ### 5/5 — Cool app! *2026-01-27, version 1.5.1* Simple and easy to start creating molecules. Fun! ### 5/5 — Super nützlich für den Chemieunterricht *2025-10-02, version 1.5.1* Benutze ich regelmäßig für einfache Atombindungen und dann auch für organische Moleküle. Ich habe mir die Nutzung erarbeitet und kann sie meinen Schülerinnen und Schülern vermitteln. Nur nicht aufgeben! ### 5/5 — VERY GOOD! すごく良い！ *2025-07-23, version 1.5.1* This app is the best one which I have ever used. 今までで最高の3Dモデル分子作成アプリです。 ### 5/5 — Very much fun *2025-05-17, version 1.5.1* Its easy to use and makes it easier to understand the structure of molecules. ### 4/5 — Simple et efficace *2024-06-14, version 1.5.1* J’ai l’impression que les doublets non liants ne sont pas toujours pris en compte dans la répulsion mais sinon c’est vraiment bien, surtout pour une App gratuite. Je l’utiliserai pour mes étudiants en Prépa PASS/LAS.1. ### 5/5 — Wonderful tool for building molecular structure *2024-02-22, version 1.5.1* This is a great app for composition purposes ### 5/5 — 必需品 *2024-02-22, version 1.5.1* すごく使える ### 5/5 — Top *2023-12-26, version 1.5.1* Top ! ## Frequently asked questions about Molecular Constructor ### What does Molecular Constructor do? Molecular Constructor is a free 3D modeling software designed for building molecules. It allows users to create molecular structures and optimize their geometry concurrently within the application. ### Is this app free to use? Yes, Molecular Constructor is completely free to use. There are no costs associated with downloading or utilizing its features for building and optimizing 3D molecular models. ### What are the key features of this app? The app's primary features include the ability to build molecules in a 3D environment, design specific molecular structures, and optimize their geometry in real-time. A more advanced desktop version is also accessible. ### Who would benefit from using this app? This application is ideal for students, researchers, and educators who need a tool for visualizing and manipulating molecular structures. It's particularly useful for learning and experimenting with chemical designs. ### Where can I find a more advanced version? A more advanced desktop version of the software can be found on the project's official website. You can access it by visiting http://molconstr.com/ for enhanced modeling capabilities. ## Version history (last 5 releases) ### 1.5.1 — 2022-12-13 VERSION 1.5.1 * Fixed addition and selection of atoms on iOS 16.1.2 * Discontinued support for iOS 12 ### 1.5.0 — 2019-11-22 VERSION 1.5.0 * Added a file manager: now you can organize your library by creating folders and putting molecules inside * Added two-finger rotation and panning * Added "Add" menu item that allows to select a chemical element and then add it multiple times to the screen * Replaced a long-press gesture to insert a molecule with a "Molecule" button in "Choose element" popup, see help * Removed bond popup. To update or delete an existing bond select an atom and keep tapping the attached atom * Removed "Dragging" menu item * Removed double-tap that was used to switch between rotational and translational modes in favor of two-finger gestures * Fixed bond deletion when at least one of connected atoms has moved * Removed Delete button from New atom popup, pressing which was causing the app to crash * Added hydrogen addition to undo/redo history * Limited undo/redo history to 20 items * Added delete confirmation popup * Added molecule name to overwrite popups * Added Mn * Added Na-C bond * Increased maximum valence for boron to 4 * Fixed some bugs that caused app crashes * Discontinued support for iOS 9 and 10 ### 1.4.0 — 2018-10-08 VERSION 1.4.0 * Added undo and redo buttons * Added share molecule feature * Added automatic addition of hydrogen atoms (to C, N and O), tutor updated * Saved molecules can be now access outside the app (see Help) * Added approximate chemical formula * Added molar mass calculation * Added screenshot feature * Added rename molecule feature * Added Browse option to open externally stored MC molecules * Replaced Model menu with Tools menu and moved Model to Settings * Added multiple toasts (short messages 2 seconds long) to improve app feedback * Fixed app crashing when tutorial is finised * Removed "Make sp2/sp3" button for nitrogen, now app can decided automatically * Refactored menu * Axes and translucent plane are invisible by default (but still in Settings) * Added ethanol to examples (library) * Updated Help * Added new bonds: Mg-B, Mg-Mg, K-N, Fe-N, P-P, P=P, C#Al, Al=O, P-S, Fe-S, Fe=S, As-S, Fe-As * Increase maximum valence of Fe to 6 * Changed aluminum hybridization to sp2 * Added cobalt ### 1.3.0 — 2017-12-01 VERSION 1.3.0 * Added molecule insertion: long press and choose from popup menu (most requested feature) * Fixed app crash when As and Se have more than four bonds * Fixed app crash when atom is changed * Added small hydrogens setting * Added tutorial on/off setting * Added text color setting * Added Info menu with What's new, Help, Rate! and About items * Increased maximum valence of Cl to 7 to allow ClO2 and ClO4. * Increased maximum valence of N to 4 to allow resonance structure of HNO3 with 2 single and 1 double bonds * Added new bonds: P-N, H-Cl, Cl-Cl, Na-O, K-O, Fe-C, Fe-O, K-I, Mg-I and Mg-N * Added iron * Added two app previews * Fixed thumb position on color sliders * Fixed occasional app crash when adding a bond ### 1.0.0 — 2017-10-23 No release notes. ## Apps similar to Molecular Constructor | App | Rating | Price | Category | | --- | --- | --- | --- | | [Molecules](https://appshunter.io/ios/app/molecules/id284943090) | 3.6 (166) | Free | Education | | [Elementium](https://appshunter.io/ios/app/elementium/id892123825) | 4.6 (576) | Free | Education | | [Unreal Chemist](https://appshunter.io/ios/app/unreal-chemist/id1597689215) | 4.3 (43) | Free | Education | | [Search PubChem](https://appshunter.io/ios/app/search-pubchem/id1369742632) | 5.0 (5) | Free | Education | | [ReactionFlash](https://appshunter.io/ios/app/reactionflash/id432080813) | 4.8 (41) | Free | Education | | [WebMO Molecule Editor](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095) | 4.0 (40) | Free | Education | ## Related topics [molecular constructor](https://appshunter.io/ios/topics/molecular-constructor) · [molecules](https://appshunter.io/ios/topics/molecules) · [molecular formula generator](https://appshunter.io/ios/topics/molecular-formula-generator) · [mobile molecular datasheet](https://appshunter.io/ios/topics/mobile-molecular-datasheet) · [molecular](https://appshunter.io/ios/topics/molecular) · [good molecules](https://appshunter.io/ios/topics/good-molecules) · [my molecularium](https://appshunter.io/ios/topics/my-molecularium) · [webmo molecule editor](https://appshunter.io/ios/topics/webmo-molecule-editor) · [molecular model simulator](https://appshunter.io/ios/topics/molecular-model-simulator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*