MoleculeSketch is a simple and easy to use drawing App for chemical formulas and reactions.
It has following features:
+ add atoms and bonds nicely by position locking (can be disabled)
+ choose different double bond styles
+ add stereo bonds
+ add bonds with higher hapticity
+ show missing hydrogen atoms depending on free valences
+ "grow" and remove hydrogen atoms
+ show non bonding electron pairs on heteroatoms
+ change background color of drawing area and add a grid
+ copy/paste/cut molecules and drawings
+ paste drawings into other applications as pdf drawing
+ use trackpad gestures for zooming and rotation
+ access drawing attributes from popover panels
+ add reaction arrows and text fields
+ calculate average mass and formula of molecules
+ group and arrange objects
Finally a new version with a lot of new tools and possibilities:
+ you can group objects
+ you can arrange objects
+ more ring templates
+ draw bonds with higher hapticity
+ choose if bond is counting for free valence calculation
+ draw dative (coordinative) bonds
+ more brackets
+ arrow for retro synthesis
+ "grow" and remove hydrogen atoms
+ add a grid to the background
several bug fixes
Please let me know if you still encounter some bugs or difficulties while working with MoleculeSketch.
