Molecular Constructor

VERSION 1.5.1

* Fixed addition and selection of atoms on iOS 16.1.2
* Discontinued support for iOS 12

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

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

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