Chirys Draw vs Sticky Notes + Widget Memo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chirys Draw
Easily create complex molecular structures and reaction schemes with intuitive gestures. This app offers chemically aware text, automatic calculations, and publication-quality export options for scientists and students.
- Draw complex molecular structures and reaction schemes
- Chemically aware text and automatic calculations
- Intuitive circle gesture for ring creation
- Publication-quality image and PDF export
- Airdrop sharing and cross-platform compatibility
- Import/export MOL files
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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 speeding the way scientists draw and communicate. Imagine what you will create! Take notes at those seminars or class lectures! Present your ideas at project or group meetings! Draw structures and reaction schemes for your next paper! See the how-to videos on the Chirys web site. Key Features: • Create saturated, aromatic rings and chains • Draw reactions and reaction schemes with reaction conditions • Draw retrosynthetic pathways • Create multi-line text annotations with fonts and colors • Create complex fused and spirocyclic ring systems • Generate ion pairs • Airdrop sharing with colleagues • Airdrop transfer to your Macintosh • Copy and paste images or PDFs into Pages®, Keynote®, and other applications • Copy images to the Camera Roll • Send images of molecular structures by email, ready for publication • Make publication-quality prints and images • User-defined Groups • Export drawings as a scalable graphics PDF • Import and export molecules as MOL files Additional Features: • Automatic identification of molecular formulas in text • Molecular formula, weight, elemental composition, and exact mass calculations • Automatic layout of functional groups • Resonance and equilibrium arrows • 24 levels of undo and redo 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
Sticky Notes + Widget Memo
Organize your thoughts with customizable stickies and widgets. Create typed or handwritten notes, organize them with colored folders, and set reminders. Sync across devices and protect your data with password locks.
- Customizable home screen widgets
- Colored folders and sub-folders
- Handwritten and typed notes
- Note sharing
- Password protection
- iCloud sync and backup
- Customizable backgrounds and icons
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Boost your productivity with these simple and fun colored notes reminders. Customize your home screen with colorful stickies and folders widgets. Take manual backups to keep your note safe just in case. Organize notes with colored folders and sub-folders to efficiently classify your information. Take hand written notes and doodle along with typed once. Share notes as text or a drawing to other supporting apps. Manage deleted items and restore notes you thought you will not need again. Protect and lock your notes and folders with a password. Search for notes and folders if they are out of your sight. Pop your notes with custom backgrounds, or mark the notes with an icon to specify an importance, to classify the information in it, or just for fun. Sort your notes and folders automatically by various criteria, or move them around manually. Type your notes with custom fonts. Schedule reminders notifications in your notes to be reminded of important events. Sync and backup your notes in your iCloud account, so you will be able to access your notes across your iCloud enabled devices. Enjoy the app with no ads and no subscriptions. Sticky Notes is available to you for free for a trial period of 7 days. Mac floating notes version of the app is sold separately.
Screenshots
Verdict
The clearest difference is in-app purchases: Chirys Draw at none against Sticky Notes + Widget Memo's 7. Chirys Draw also leads on review sentiment (67% vs 48%) and iOS requirement (10.0 vs 16.0). Sticky Notes + Widget Memo's advantage is update cadence (every 3 weeks vs every 9 months) and rating (2.9 vs 2.6). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Sticky Notes + Widget Memo sells 7 one-off in-app purchases. Chirys Draw asks for nothing beyond the download.
Sticky Notes + Widget Memo holds the better App Store score, 2.9 against 2.6. That said, the two scores are not equally well evidenced: Sticky Notes + Widget Memo has 69 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 67% of Chirys Draw's written reviews are positive against 48% of Sticky Notes + Widget Memo's, so the app with the better star average is not the one people write more warmly about.
Chirys Draw ships an update every 9 months, Sticky Notes + Widget Memo every 3 weeks. Both last shipped on October 15, 2026.
| Parameter | Chirys Draw | Sticky Notes + Widget Memo |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (8 ratings) | 2.9 (69 ratings) — better |
| Positive reviews | 66.7% of reviews — better | 47.9% of reviews |
| Number of ratings | 8 | 69 — better |
| Update frequency | Every 9 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | John Clark | Alina Vetrov |
Customer experience
Chirys Draw
Sticky Notes + Widget Memo
Bugs and requests
Chirys Draw
Not enough reviews yet to summarise bugs or requests.
Sticky Notes + Widget Memo
Reported bugs
4 issues- Widgets not loading properly
- Handwriting not registering correctly
- Notes not saving or syncing
- Overlapping text and drawings
Requested features
5 requests- Add reminders and calendar integration
- Allow more customization of notes (fonts, colors, layouts)
- Improve widget functionality and customization
- Add ability to insert images and files
- Implement better organization tools (folders, tags, etc.)
In-app purchases
Chirys Draw
No in-app purchases
Sticky Notes + Widget Memo
- School Theme Pack$0.99
- Outdoors Theme Pack$0.99
- Pen Tool Extension$0.99
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- Fonts Pack$0.99
- Creepy Theme Pack$0.99
- iCloud Sync$2.99
- Sticky Notes Pro$8.99
Questions
Is Chirys Draw free?
Is Sticky Notes + Widget Memo free?
Which has better reviews, Chirys Draw or Sticky Notes + Widget Memo?
Do Chirys Draw or Sticky Notes + Widget Memo have ads?
Which is updated more often, Chirys Draw or Sticky Notes + Widget Memo?
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