Chirys Draw 2.5

Draw complex molecular structures and reaction schemes using your fingertips. An easy circle gesture (U.S. Patent No. 9754085 and No. 10,424,399) makes even complicated polycyclic rings easy and fun to draw. Multiple double bonds or multiple functional groups are simple to add all at one time. Annotation and reaction condition text is chemically aware and properly subscripts numbers. With over 175k downloads, Chirys Draw is accelerating the way in which scientists draw and communicate. Envision the possibilities!

Take notes during seminars or class lectures. Showcase your ideas at project or group meetings. Sketch structures and reaction schemes for your upcoming publications.

Explore the instructional videos available on the Chirys website.

• Create saturated, aromatic rings, and chains
• Design reactions and reaction schemes with reaction conditions
• Easily draw retrosynthetic pathways
• Craft multi-line text annotations with various fonts and colors
• Construct intricate fused and spirocyclic ring systems
• Generate ion pairs
• Share drawings with colleagues via AirDrop
• Transfer files seamlessly to your Macintosh device
• Copy and paste images or PDFs into various applications like Pages®, Keynote®, and others
• Save images to the Camera Roll
• Email molecular structure images prepared for publication
• Produce high-quality prints and images ready for publication
• Create user-defined Groups
• Export drawings as scalable graphics PDFs
• Import and export molecules as MOL files

Additional Features:

• Automatically identify molecular formulas in text
• Perform molecular formula, weight, elemental composition, and exact mass calculations
• Utilize automatic layout for functional groups placement
• Add resonance and equilibrium arrows effortlessly
• Benefit from 24 levels of undo and redo functionalities

User feedback:

• "Wow. First of all, please let me say that this is the single best iPad application that I have ever used (not to mention one of the best structure drawing programs on any platform). You really nailed using gestures to design and manipulate structures. The app is an awesome example of harnessing the spirit of the iPad. I was up and drawing in 30 seconds. The interface is clean, intuitive, and so very well designed. Beautiful output too."
  - Stephen
• "I use this for all my structure drawing needs now - desktop applications are so expensive and actually harder to use than Chirys Draw. Developer is very responsive. Improvements to the app keep coming. If you're a student, or a lecturer like myself, and need to draw quality chemical structures, then look no further. Exporting features make it easy to create a structure, then email to yourself for incorporation into a Powerpoint, Keynote, Word or any other sort of document. Highly recommended, and well worth the cost (much cheaper than desktop apps and for most purposes just as functional)."
  - Australian user
• "Extremely well-done, very easy to learn, and elegant. It will be easier and faster other competitors to sketch high-quality structures and could be really handy for taking notes in meetings."
  - Jeff
• "Brilliant addition to the iPad workload. This is clearly a creative application and the most full-featured molecular drawing app. I think the developers here have the most motivation, and have put more original thought into this. I hope they will be encouraged to continue with their vision…"
  - Cascade
• "I wanted to let you know directly how much I appreciate this app. It works exactly as advertised, is highly capable, and is now substituting for a desktop-based chemical structure drawing app. I am right now using it to prepare structures for my pharmacognosy lectures, and it is working well."
  - Ian
• "The words that come to mind: Impressive. Quality. The development of Chirys Draw shows your deep, consistent, and scholarly chemistry flair and precision, and is impressive. Professional chemists will continue to love this."
  - Atsuo
• "ChirysDraw represents the best chemical drawing package to date on the iPad."
  - Brian
• "Thank you again for such a lovely program."
  - Olivia