# MolViewApp — Interactive protein viewer > Interactive iPad molecular structure viewer for PDB files. (iPhone/iPad app by Donghan Lee.) - Source: https://appshunter.io/ios/app/molviewapp/id6786979305 (this page in markdown: same URL + `.md`) - Developer: [Donghan Lee](https://appshunter.io/developer/1820113725) - Category: Education - Price: Free - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 29 MB - Languages: American English - Released: 2026-07-08 - Data updated: 2026-08-09 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/molviewapp/id6786979305/reviews.md ## What is MolViewApp? MolViewApp is an iPad molecular structure viewer built on Mol*. Load PDB files locally or by PDB ID and explore proteins with cartoon, surface, stick, and ball-and-stick representations. Features: - Load multiple structures; per-structure visibility from the Objects panel - Surface electrostatic potential map (screened-Coulomb / APBS-style) - Superposition and sequence-independent structural alignment - Secondary structure (DSSP) coloring - Morphing between conformations - Command-line interface and built-in manual All computation runs on-device. No account, no data collection, no tracking. ## Key features - Load PDB files locally or by ID - Multiple structure loading and visibility control - Surface electrostatic potential map - Structural alignment and superposition - Secondary structure coloring - Morphing between conformations ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/molviewapp/id6786979305/reviews.md ### 5/5 — Best program ever!! *2026-07-13* 아이패드에서도 3D 구조를 볼 수 있다니!! 👍🏻 구조끼리 겹쳐 볼 수 있어서 아주 편리합니다? ## Frequently asked questions about MolViewApp ### What is MolViewApp? MolViewApp is an interactive molecular structure viewer designed for iPad. It allows users to load and explore protein data bank (PDB) files using various visualization modes and advanced analytical features. ### How does MolViewApp handle user data? MolViewApp prioritizes user privacy as all computations run on-device. It does not require an account, collect data, or track users, ensuring a secure experience. ### What are the visualization options in MolViewApp? MolViewApp supports multiple representations including cartoon, surface, stick, and ball-and-stick. It also offers features like electrostatic potential mapping and secondary structure coloring for detailed analysis. ### Can I load my own PDB files into MolViewApp? Yes, you can load PDB files directly from your local storage on your iPad. Alternatively, you can load structures by their PDB ID. ### Does MolViewApp offer any advanced structural analysis tools? Yes, MolViewApp includes features for superposition and sequence-independent structural alignment. It also allows morphing between different molecular conformations. ### Is MolViewApp available on other devices besides iPad? Based on the provided data, MolViewApp is specifically designed for iPad and iPhone. It is not indicated to be available on other platforms like Android or desktop. ### How often is MolViewApp updated? The latest version of MolViewApp is 1.0.3, which was last updated on July 19, 2026. This indicates a recent update, suggesting ongoing development and support. ### What is the age rating for MolViewApp? MolViewApp has an age rating of 4+, making it suitable for a wide range of users, including younger students and professionals. ## Version history (last 5 releases) ### 1.1.3 — 2026-08-03 Fixed an issue where touches near the left control rail could fall through to the viewer. ### 1.1.2 — 2026-08-02 Refined structure loading and background menus. ### 1.1.1 — 2026-07-30 Bug fixes: cancelled exports no longer report success, the side panels no longer overlap in landscape, and layout improvements around device safe areas. ### 1.1.0 — 2026-07-26 Measuring - Choosing Distance, Angle or Dihedral now clears everything that was already selected, so a measurement never starts from an atom you picked earlier. - The atoms you have picked so far are named on screen while you measure, instead of being invisible state. - Tapping empty space cancels a half-finished measurement rather than pairing it with your next atom. Stick - Atoms can be tapped in Stick again. Stick drew only bonds, with no atom geometry to hit, so selecting and measuring did nothing in it while working normally in Ball+Stick. Readability - Measurement values were drawn in black on a near-black viewport. They now use the colourblind-safe Okabe-Ito palette: a yellow value on a dark backdrop with an orange line. Under the hood the app is rebuilt on a single cross-platform core, shared with the Mac and Android versions. ### 1.0.3 — 2026-07-19 This update improves reliability: • The color command now reports an invalid color name instead of silently applying the wrong color. • Show/Hide Ligand now also covers ions and other heteroatoms. • More reliable undo/redo and file open/save. Thanks for using MolViewApp! ## More apps by Donghan Lee - [Treasure Hunter](https://appshunter.io/ios/app/treasure-hunter/id6759548291) All apps by Donghan Lee: https://appshunter.io/developer/1820113725 --- *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 2026-08-09.*