For Android
For Android 7 and newer; the app itself tells you about later updates.
Check the file (SHA-256)
To be sure the file arrived untouched, its fingerprint must be exactly this:
28aa62ee2dceba23ffad6f14a969eafaa48cb45b007bb4f724019027ceb7f818
Download
Install 3DBox on your phone and computer
The Android and Windows apps are the same app as the web, with the same account and the same projects — and they work offline too.
For Windows
For Windows 10 and 11 (64-bit); nothing to install, and the app itself tells you about later updates.
Check the file (SHA-256)
To be sure the file arrived untouched, its fingerprint must be exactly this:
73992dfc039459a7906857c7f127897c7fd48e6f1d6928ce4cffc0ef9b868ea0
Install
Install in four steps
The file comes straight from this site, so your phone asks once for permission to install it.
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Download
Tap the download button; the file is saved in your phone's Download folder.
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Open the file
Tap the file in the download notification or in your phone's files app.
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Allow the install
If your phone asks, turn on “Allow from this source” for that app and tap “Install”.
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Sign in
Sign in with your mobile number; the projects and units you made before come by themselves.
Windows
Set up on Windows in four steps
The Windows app needs no install: it is a folder you put wherever you like. Your data is kept apart from it.
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Unpack the zip
Right-click the downloaded file and choose “Extract All”. Do not run the app from inside the zip.
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Run the app
In the 3DBox folder, double-click 3DBox.exe.
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Get past the Windows warning
If Windows says “Windows protected your PC”, click “More info” and then “Run anyway”. The warning is for apps without a digital signature and is shown only the first time.
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Sign in
Sign in with your mobile number. For a new version, put the new folder in place of the old one; your data stays where it is.
Rather not install?
Sign in from the browser right now; everything is the same and stays in sync between your phone and the browser.