Fixed protein superposition for structures containing calcium ions. Improved app reliability and compatibility with current operating systems.

Improved reliability when loading and editing multiple structures. Fixed selections, measurements, saved sessions, and file export. Updated viewer controls and error recovery.

Fixed an issue where touches near the left control rail could fall through to the viewer.

Refined structure loading and background menus.

Bug fixes: cancelled exports no longer report success, the side panels no longer overlap in landscape, and layout improvements around device safe areas.

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.

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!

This update fixes atom/residue selection parsing so ranges and expressions resolve correctly, and hardens viewer state synchronization so representation changes always apply. Refreshed app icon.

Fixes an issue where display settings could be ignored if applied while the 3D viewer was still loading, and where the Objects panel could show a representation that didn't match the molecule on screen.

Version 1.0 adds session save/open (.molapp), display export (PNG, JPEG, GIF, SVG, PDF), printing, undo/redo, reset, per-feature protein visibility, a molecular-surface water-rendering fix, and an updated in-app manual.

• New Sphere (space-filling) representation for atoms, alongside Ribbon, Surface, Stick, and Ball+Stick. • Rendering and stability improvements.

Molecule and selection colors now use the Okabe-Ito colorblind-safe palette, so every color stays distinct for users with color-vision deficiency. Fixed the Stick view so it draws bonds only, distinct from Ball+Stick.

• Measure distances, angles, and dihedrals directly on a structure, with Apple Pencil hover tooltips. • Fixed command bar targeting, selection parsing, and viewer state issues. • Stability improvements.