Download & quick start

FlaskConnect is free to install from your platform's store. Drawing and exporting apparatus diagrams stays free with no time limit. When you need chemical structures and reaction schemes, there is Pro.

Download Free and Pro Quick manual

Download

Install it from the store for your device. There is no account to create and no sign-up email to send.

Windows (Microsoft Store)

Open the FlaskConnect page on the Microsoft Store from the link below
Click Get to install
Launch FlaskConnect from the Start menu

Get it on the Microsoft Store

Mac (Mac App Store)

Open the FlaskConnect page on the App Store from the link below
Click Get to install
Launch it from Launchpad or the Applications folder

Get it on the Mac App Store

iPad (App Store)

Open the FlaskConnect page on the App Store from the link below
Tap Get to install
Launch FlaskConnect from the Home Screen

Get it on the App Store

Free and Pro

Free

Apparatus diagrams (glassware, tubing and notes)
Export to SVG and PNG (plus PowerPoint, Word and Excel on Windows and Mac)
iCloud sync (Mac and iPad)
No time limit

Pro

$3.99 / month or $39.99 once

Everything in Free, plus the Structure tab (chemical structures and reaction schemes)
Monthly: first month free, renews automatically
One-time purchase: buy once, keep it
Both options unlock exactly the same features

You can buy Pro inside the app from the gear button, then "FlaskConnect Pro…". Prices shown are US prices and vary by country or region. Purchases are handled by Apple on Mac and iPad, and by Microsoft on Windows. On Mac and iPad, one purchase covers both devices when they use the same Apple Account (press Restore Purchases on the other device). A purchase on Windows is separate from Mac and iPad. To cancel the monthly plan: on Mac and iPad, use Subscriptions in the App Store at least 24 hours before the period ends; on Windows, turn off recurring billing in Services & subscriptions for your Microsoft account at least 2 days before the next billing date.

If you used the beta

Mac and iPad (TestFlight): the beta ended on October 31, 2026. Install the release version from the App Store; your documents (.chemc) in iCloud Drive open as before.
Windows (Microsoft Store): the Microsoft Store updates the app to the release version automatically. Documents on your PC open as before.
Thank you to everyone who helped during the beta.

System requirements

Windows	Windows 10 / 11 (64-bit)
macOS	macOS 12 or later (Apple Silicon)
iPadOS	iPadOS 15 or later

Known limitations

The iPad build exports SVG and PNG only. Export to PowerPoint, Word and Excel is available in the Windows and Mac builds.
Windows does not sync automatically with Mac and iPad. Copy the .chemc file across and it opens as is (the format is shared).

Please send feedback

FlaskConnect is developed by one person, so your feedback is what makes it better. Even the smallest thing that felt off is worth telling us about.

From the app: use Help → Send Feedback in the menu.
From the web: use the form on the support page, or write to [email protected].
When reporting a problem: attaching the log file from Help → Open the Log Folder makes it far quicker to find the cause. Logs are kept on your device only and contain no identifying information such as your computer name or user name.

Quick manual — your first drawing in 5 steps

Apparatus diagrams and structures on a single canvas. These five steps get your first drawing done.

Place an item
Click an item in the palette on the left and it appears on the canvas. Drag it to move it around.
Connect it
Click the blue connection point (○) on an item, then click the next item and the two are joined automatically. Items that slot into a neck, such as septa and thermometers, only need to be brought close to a neck: a green preview appears and they slot straight in.
Adjust it
Select an item and the panel on the right lets you change its size, fill level, color and number of necks. Arrow keys nudge the position (hold Shift for 10 px steps), [ and ] rotate it, and H / V flip it.
Draw a structure (Pro)
On the Structure tab, enter a compound name, a CAS number or a SMILES string to add a structure to the canvas (benzene, 71-43-2 and c1ccccc1 all give the same structure). The PubChem lookup can bring in names and physical properties too. Styling follows the ACS standard.
Export it
Finished drawings export to SVG or PNG (the Windows and Mac builds also write PowerPoint, Word and Excel). Drawing and exporting run entirely on your device. Save with Cmd+S (Ctrl+S on Windows).

Keyboard shortcuts (Windows / Mac)

Action	Windows	Mac
Save	Ctrl+S	Cmd+S
Undo	Ctrl+Z	Cmd+Z
Rotate	[ / ]
Flip horizontally / vertically	H / V
Nudge the position	Arrow keys (Shift for 10 px steps)
Add to the selection	Shift+click
Return a directly connected item to its default position	Select the connection, then double-click its dotted line
Edit text in the figure (readings, names, notes)	Double-click the text

Using it on iPad

Action	Gesture
Scroll / zoom the canvas	Two-finger drag / pinch
Undo	Two-finger tap
Redo	Three-finger tap
Apple Pencil	Supported (works exactly like a finger)

The user manual explains everything in more detail, with screenshots. If you are new to the app, start there.

Where your documents are kept

Work in progress is saved automatically for recovery, so you can pick up where you left off the next time you open the app. Documents live only on your device (and, on Apple devices, in your own iCloud); drawings are never stored on the developer's servers. You can check the actual location from Help → Open the Save Folder in the menu.

Windows: saving (Ctrl+S) puts your document in the Documents > FlaskConnect folder on your PC. There is no automatic sync with Mac or iPad — iCloud sync is a feature between Apple devices. To move a drawing across, copy the .chemc file by hand; the format is the same, so it opens as-is.
Mac / iPad: saving (Cmd+S) puts your document in iCloud Drive > FlaskConnect, the app's private area under your Apple ID, and iCloud keeps your Mac and your iPad in sync.