iMolecular Draw 4+

song hyunsub

    • 3.5 • 2 Ratings
    • $2.99

iPhone Screenshots



The IMoleDraw is an application that can view, edit and build molecules in 2D. Users can easily draw a molecular structure with IMoleDraw.

[Open & Save]
FTP Server
Web(Open only)
Email(Open an email attachment)
User PC:(Need to install IMoleServer. You can download from IMoleDraw Support page for free.)

[Work Tool]
Cursor tool, Edit tool, Add tool(atom,chain,template structure), Delete tool.

What’s New

Version 2.2.1

bug fix.

Ratings and Reviews

3.5 out of 5
2 Ratings

2 Ratings

PhD Chemist ,

iMolDraw is a great start for a chemistry drawing app.

Far better than the only other chemistry drawing app I'm aware of. It's terrific for quickly sketching out ideas or archiving structures for reference. The previous reviewer pointed out a big flaw: the program ignores hydrogen atoms when calculating MW.

I wrote to the developer with some questions but have not received an answer. Maybe other users have figured these out.

1) Is there a way to move just a part of the molecule? For example, I can use the lasso tool to select a phenyl ring. I would like to move it out of the way of another group. Every time I try, I move the entire structure.

2) What is the function of the button with the little gear and the label CTL. It doesn't seem to do anything except change color.

I also offered two suggestions that would improve the usability of iMolDraw. The program uses the MOL file format which is great for exchanging data with other chemistry programs. ChemDraw is, by far, the most popular chemistry drawing program for PCs and Macs. It can read and save MOL files but the default is its own CDX format. I wish iMolDraw could read CDX files directly.

The developer also offers the free iMolServer for exchanging files between a PC and iPhone. I wish for a Mac version or the ability to import files directly from the iDisk.

This program is a great start. I've been wanting a program like this ever since I had my Apple Newton. A few improvements and it will deserve 5 stars.

#1Nerd ,

Great Start

Very useful chem app. I wish the developer were easier to contact. The only real problem is that it does not count hydrogens when calculating molecular mass, etc. That needs to be fixed. I am also baffled by the ctrl gear button which appears to have no purpose. Anyway, this is an app that I have been waiting for for some time. Mimol was a nice stopgap, but this has a much more professional look and feel, and many more functions. I hope the developer keeps working on it because it could be a must-have science app with a few fixes/improvements.

Chucksz ,

Not too bad but I need to be able to paste Into other programs.

This is a nice start but it is not finished. What good is building a structure if you can't paste it into other programs?

The interface is reasonable. Mistakes are easily corrected and I really like the rotation feature. Being able to exchange structures with other programs would be a plus.

App Privacy

The developer, song hyunsub, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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