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What’s New Version 4.1
MoleculeWorld 4.1
Mac support, new visualization options, and a faster app.
Now available on Mac — your library and Pro unlock carry over automatically via iCloud.
New Wire Surface mode — the molecular surface as a wireframe mesh, so you can see structure detail through the surface shape.
New B-factor coloring — a blue-white-red gradient that highlights areas of higher atomic motion or uncertainty, scaled to each structure.
Faster loading for large structures, especially big assemblies.
Bug fixes and stability improvements.
This release builds on :
- iCloud sync to keep your structures on all your devices
- Smoother, higher-quality ribbon and surface rendering
- Domain-based coloring that reveals how a structure is organized
- Sugar (glycan) residues colored by standard SNFG conventions
- Clearer annotations for modified nucleotides
Description
Molecule World
A modern molecular visualization app for iPhone, iPad, and Mac.
Molecule World is back — completely redesigned for Apple's modern ecosystem. Originally developed with funding from the National Science Foundation and recognized for its contributions to science education, Molecule World has been rebuilt from the ground up as a single, unified app for iPhone, iPad, and Mac (via Mac Catalyst). The new version pairs high-quality molecular visualization with a streamlined experience that follows you across every device.
Explore Molecular Structures in 3D
Students, educators, and researchers can interactively explore proteins, DNA, RNA, and small molecules in a fully three-dimensional environment. Rotate, zoom, and pan through structures with smooth, high-quality rendering built for clarity and scientific understanding.
Bring In Structures From the Major Databases
Open files you already have, or fetch structures right inside the app — search the Protein Data Bank, PubChem, and NCBI by ID or keyword and have them download and open in seconds.
Powerful Visualization Tools
- Smooth, interactive 3D — rotate, zoom, and pan
- Multiple representation styles: ball-and-stick, space-filling, tubes, ribbon/cartoon, molecular surfaces, and wire mesh
- Focused selections — show just proteins, nucleic acids, ligands, backbones, or alpha-carbon traces
- Scientific color schemes — by element, chain, residue, secondary structure, charge, hydrophobicity, and B-factor
- Clear, context-aware legends that explain exactly what you're looking at
Designed for Education and Discovery
Molecule World is used in classrooms and laboratories to support teaching in structural biology, chemistry, and molecular science. Educators can illustrate key concepts — protein folding, molecular interactions, and the structure of DNA and RNA — with visuals students manipulate themselves.
Built for the Apple Ecosystem
One app runs natively on iPhone, iPad, and Mac. Optional iCloud support keeps your library of structures — and your place in them — in sync across all your devices.
Built for What's Next
This release lays the foundation for upcoming features, including enhanced analysis tools, richer educational workflows, and professional research capabilities.
Molecule World is developed by Digital World Biology LLC.
Accessibility
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Version history 16 versions
Build 887866010v4.12026-07-06 22:34:05
MoleculeWorld 4.1
Mac support, new visualization options, and a faster app.
Now available on Mac — your library and Pro unlock carry over automatically via iCloud.
New Wire Surface mode — the molecular surface as a wireframe mesh, so you can see structure detail through the surface shape.
New B-factor coloring — a blue-white-red gradient that highlights areas of higher atomic motion or uncertainty, scaled to each structure.
Faster loading for large structures, especially big assemblies.
Bug fixes and stability improvements.
This release builds on :
- iCloud sync to keep your structures on all your devices
- Smoother, higher-quality ribbon and surface rendering
- Domain-based coloring that reveals how a structure is organized
- Sugar (glycan) residues colored by standard SNFG conventions
- Clearer annotations for modified nucleotides
Build 887456471v4.02026-07-02 09:33:23
Molecule World is back — completely rebuilt for iPhone, iPad, and Mac.
This release brings:
- iCloud sync to keep your structures on all your devices
- Smoother, higher-quality ribbon and surface rendering
- Domain-based coloring that reveals how a structure is organized
- Sugar (glycan) residues colored by standard SNFG conventions
- Clearer annotations for modified nucleotides
More is on the way.
Build 838163567v3.102020-10-17 21:30:36
Fixed problem with downloading collections.
Build 827223206v3.072018-05-21 19:18:55
This update from Apple will improve the functionality of this app. No new features are included.
Fixed hydrophobicity coloring for proline.
Build 826888463v3.0.62018-05-02 02:32:59
Fixed alanine hydrophobicity coloring, increased allowed number of atoms to support larger structures
Build 826166877v3.0.52018-03-06 22:13:43
Minor bug fixes. Fixed bugs that caused crashes related to the new NCBI structure format.
Build 819396022v3.0.22016-11-08 21:23:54
Updated for iOS 10, fixes minor bug in displaying structures immediately after downloading from the MMDB (NCBI) or from the PDB. Also fixes minor bug in displaying PDB files when downloaded from website.
Build 818115379v3.02016-07-18 13:57:52
- Download individual structures and entire collections of molecules to support teaching activities
- Lock a chain to prevent changes in appearance
- Performance improvements make rendering faster and improve behavior with larger structures
If you enjoy using Molecule World, leave us a review – it really helps!
Build 817250587v2.2.12016-05-04 00:08:47
Minor bug fix to correct problem with downloading files from the PDB.
Build 813876675v2.2.02015-10-23 18:44:22
- Color and draw proteins to show secondary structure elements (beta sheets, alpha helices, and coils)
- Use the color key to identify secondary structure elements
- Improved ability to search for sequences
- Added ability to use a wild card character (*) in a sequence search
- Improved rendering for large structures like antibodies, that download as alpha carbons.
- View a wider range of PDB files.
- Added ability to show thorium
- Fixed a bug where alpha carbon structures were not displayed on initial download
Build 811723196v2.1.02015-03-10 00:57:53
New rendering styles: backbone view with side-chains hidden, backbone view with oxygens hidden
Identify binding sites for other molecules, drugs, or small chemicals by selecting nearby residues
Search and select sequences by pattern or one letter code
Use mixed drawing and coloring modes
Improved coloring for smaller chemicals (water, glucose, etc.)
Build 808312674v2.0.02014-12-16 16:09:40
- An adaptive sequence viewer displays DNA, RNA, and protein sequences and other chemicals
- Protein, DNA, or RNA chains, single residues, and other chemicals (coenzymes, metals, or drugs) can be selected and highlighted from the sequence viewer
- The sequence viewer allows any object in a structure to be highlighted, dimmed, or hidden
- Rainbow coloring shows where amino acids or nucleotides are located within a chain and helps illustrate protein and RNA folding
- Instant recoloring from the visualization menu
- Expanded information view
- Improved display of bonds to metals, drugs, and disulfide bonds
- Improved search
- Structures are now downloaded from the NCBI (MMDB) as biological units
- Structures from the PDB are downloaded as asymmetric units
- View large, complex, structures (< 120,000 atoms)
- Minor bug fixes
Build 719402670v1.1.12014-10-08 14:30:10
Minor updates to support iOS8
Build 699962667v1.12014-09-14 23:34:48
- Modified adaptive color key to support residue mode
- Added Apply Change button
- Improved handling of image files
- Compensated for changes in downloading PDB files
- Minor bug fixes
Build 590532889v1.0.12014-05-27 16:07:05
- Improved depth properties increase the 3 dimensional quality of molecular structures and allow users to zoom in to a greater extent.
- Some bond rendering issues have been fixed.
- Performance has been improved for large molecules.
- Minor improvements have been made to the interface.
Build 553072657v1.02014-04-29 02:06:20
No pricing data captured yet — comparisons appear once the app has paid storefronts or in-app purchases.
Availability 1 of 1 storefronts
| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
| US | en-US | Free | 4 | 5.0 | 4.1 |
Change log 20 changes · US
✎
releaseNotes updated
MoleculeWorld 4.1
Mac support, new visualization options, and a faster app.
Now available on Mac — your library and Pro unlock carry over automatically via iCl
✎
description updated
Molecule World
A modern molecular visualization app for iPhone, iPad, and Mac.
Molecule World is back — completely redesigned for Apple's modern ecosystem. Ori
✎
subtitle updated
See the molecules of life
✎
name updated
Molecule World
◆
Version 4.1 released
MoleculeWorld 4.1
Mac support, new visualization options, and a faster app.
Now available on Mac — your library and Pro unlock carry over automatically via iCloud.
New Wire Surface mode — the molecular surface as a wireframe mesh, so you
◆
Version 4.0 released
Molecule World is back — completely rebuilt for iPhone, iPad, and Mac.
This release brings:
- iCloud sync to keep your structures on all your devices
- Smoother, higher-quality ribbon and surface rendering
- Domain-based coloring that reve
◆
Version 3.10 released
Fixed problem with downloading collections.
◆
Version 3.07 released
This update from Apple will improve the functionality of this app. No new features are included.
Fixed hydrophobicity coloring for proline.
◆
Version 3.0.6 released
Fixed alanine hydrophobicity coloring, increased allowed number of atoms to support larger structures
◆
Version 3.0.5 released
Minor bug fixes. Fixed bugs that caused crashes related to the new NCBI structure format.
◆
Version 3.0.2 released
Updated for iOS 10, fixes minor bug in displaying structures immediately after downloading from the MMDB (NCBI) or from the PDB. Also fixes minor bug in displaying PDB files when downloaded from website.
◆
Version 3.0 released
- Download individual structures and entire collections of molecules to support teaching activities
- Lock a chain to prevent changes in appearance
- Performance improvements make rendering faster and improve behavior with larger structures
◆
Version 2.2.1 released
Minor bug fix to correct problem with downloading files from the PDB.
◆
Version 2.2.0 released
- Color and draw proteins to show secondary structure elements (beta sheets, alpha helices, and coils)
- Use the color key to identify secondary structure elements
- Improved ability to search for sequences
- Added ability to use a wild car
◆
Version 2.1.0 released
New rendering styles: backbone view with side-chains hidden, backbone view with oxygens hidden
Identify binding sites for other molecules, drugs, or small chemicals by selecting nearby residues
Search and select sequences by pattern or one
◆
Version 2.0.0 released
- An adaptive sequence viewer displays DNA, RNA, and protein sequences and other chemicals
- Protein, DNA, or RNA chains, single residues, and other chemicals (coenzymes, metals, or drugs) can be selected and highlighted from the sequence
◆
Version 1.1.1 released
Minor updates to support iOS8
◆
Version 1.1 released
- Modified adaptive color key to support residue mode
- Added Apply Change button
- Improved handling of image files
- Compensated for changes in downloading PDB files
- Minor bug fixes
◆
Version 1.0.1 released
- Improved depth properties increase the 3 dimensional quality of molecular structures and allow users to zoom in to a greater extent.
- Some bond rendering issues have been fixed.
- Performance has been improved for large molecules.
- Mino
◆
Version 1.0 released