Download / Install


If you experience any problems installing or crashes while running SpinDrops, please let us know by email at Include your operating system, the SpinDrops version, what you were doing when the problem appeared, and any other information you can think of that will help us reproduce the problem, thanks!

SpinDrops Installers

Stable [2.0.4]

Android Notes

iOS Notes

macOS Notes

Linux Notes

in-Browser Notes

No installation necessary!
Click here to open SpinDrops-web in a new window. (Firefox is recommended. Chrome may work, slowly, and Safari is known to have incomplete WebGL support. Browser private-mode will probably not work.)

MSWindows Notes

SpinDrops version numbers attempt to adhere to so-called Semantic Versioning. Information about SpinDrops on specific platforms can be found below.

The ChangeLog has a history of updates and bug fixes.

Other Documentation



Tutorial for the 1.2.2 version of SpinDrops for iOS.


Phase Cycling Tutorial using SpinDrops by Simon Wengert

Android Notes

Requires at least IceCreamSandwich a.k.a Android 4.0 with GLES2.0, a.k.a Android API 14.

When first run, SpinDrops will request access to your device’s internal “SD card storage” for saving preferences and your custom pulse sequences.

Some devices with MALI GPUs have been observed to not be able to draw DROPS. We’re trying to fix that.

Due to the enormous variety of Android phones it is impossible for us to test every possible handset(!) If you experience problems, please let us know:

  • what model device you have,

  • what version of the Android OS is installed on your phone, and

  • a description the problem and what you were doing when it happened.


iOS Notes

Version 1.2.2 of SpinDrops does not run on iOS 11.

macOS Notes

There are two ways to install SpinDrops on macOS, the easiest by far is simply to install it from the Apple App store.

When installing from the .dmg, there is a SpinDrops binary, the command-line Ieval program, and a link to your Mac’s Applications folder. To install SpinDrops, open the .dmg and drag the SpinDrops icon into the Applications folder. The SpinDrops application binary is not cryptographically signed, so the first time it is run, macOS may not allow it to run. In order to bypass Apple’s anti-trojan protection, Right-click the SpinDrops icon and select Open from the menu.

For lazy command line jockeys who just want the latest version installed in /Applications:

curl -O
sudo hdiutil attach SpinDrops-2.1.0-beta24.dmg
sudo rm -rf /Applications/
sudo cp -R /Volumes/SpinDrops-2.1.0-beta24/ /Applications
sudo hdiutil unmount /Volumes/SpinDrops-2.1.0-beta24

Linux Notes

There is an RPM, a .deb, and a .tar.gz containing binaries built on Ubuntu 14.04, which should also work on CentOS7 / RedHat 7, or any newer Linux distribution.

When installing using the .rpm, the SpinDrops binary executable will be by default installed as /opt/SpinDrops/SpinDrops .

Copy/paste one liners for easy installation from the command line:

RedHat / CentOS / Fedora

sudo rpm -ivhU

Debian / Ubuntu / Mint

curl -sLO
sudo dpkg -i SpinDrops_2.1.0-beta24_amd64.deb

From Tarball

curl -sLO
sudo tar -xzv -C /opt -f SpinDrops-2.1.0-beta24.x86_64.tar.gz
sudo mv /opt/SpinDrops-2.1.0-beta24.x86_64 /opt/SpinDrops

in-Browser Notes

Your browser must support WebGL. We strongly recommend using Firefox, which in our experience has the best WebGL and WebAssembly support of any browser. Safari is known to have problems with WebGL, and Chrome has been observed to be noticeably slower than Firefox.

The web version of SpinDrops saves its state (your edited sequences, local preferences, etc…) in your web browser’s local storage. Because of this, private browsing mode on some browsers may prevent SpinDrops from working. Also, sometimes this state can become corrupted. To force a reset of the preferences to a known state, simply add &--reset to the end of the url, such as here: Click here to reset SpinDrops-web Preferences. (

If resetting the preferences doesn’t work, try clearing your browser’s cache and reloading. SpinDrops stores its preferences and User Sequences locally in your browser’s IndexedDB, so if the RESET link above and clearing the cache don’t work, try also clearing your browser’s local “IndexedDB” (Warning: this will delete any custom pulse sequences you had saved within the web app.)

MSWindows Notes

Older versions of Microsoft Windows may be missing dlls necessary for running SpinDrops. The required dlls are part of the OS (since 2015), and are also installed with updates, but may be missing from older Windows versions. They are available from Microsoft as a free download, and you can find them by googling “Visual C++ Redistributable for Visual Studio 2015” :

Please do contact us if you have any problems using SpinDrops on Windows, and we’ll do our best to help out!

Beta Test Versions


Some test versions of SpinDrops with new functionality - these are beta versions and likely contain bugs or other errors.



in-Browser Notes

No installation necessary!
Click here to open SpinDrops-web-beta in a new window. (Firefox is recommended. Chrome may work, slowly, and Safari is known to have incomplete WebGL support. Browser private-mode will probably not work.)

MSWindows Notes