Installation Support

Using app-stores

Students can install the app using Apple, Google or Microsoft app stores. On school devices where these are available, this is the best (and usually only route).

The app was designed for students to use on their own devices. The Windows version is ideal for this and for Physics teachers to have it on their school computer.

*For security reason no IOS or Android versions of the app are provided outside of the app stores. In particular, any Android apk files obtained outside of the store are not secure.

Schools which use Intune to manage their devices can enable access to the app using Company Portal.

Web version, NO app required (Your School, question based test)

Students can access all of their tests without needing to install an app on any computer at app.23equations.com.

Currently, there are no features in the app which are applicable to teachers but a free preview is at free.23equations.com

Note: the web app only allows access to the question based test set by their teachers.

Windows app - sandboxed and secured

The windows app uses Universal Windows Platform, UWP. So, the app is sandboxed and can only access a limited number of safe features and files allowed by Microsoft.

The app is signed and Microsoft authenticates it during the install. This is the safest and most secure framework for apps on windows at the moment.

Important: one of the security measures is the app is installed per-user, inside a users own space, not per-machine.

Installing on PC without the Microsoft Store (sideloading)

Note: sideloading support has, for the moment, been suspended. Please contact us if this causes a problem. We are looking at ways to efficiently resume offering this service.

The UWP format is secure and safe but unfortunately, in order to achieve this, it uses an MSIX package cannot be distributed with the common tools that only support the MSI format. The following information is offered to help with network instillations but we cannot offer any advice on how to configure security settings. Network security expert should be consulted if you are unsure.

The MSIX format allows two options:

  1. Internally hosted MSIX - no automatic update

    Below is the MSIX bundle which can be used to install the app manually. No access to the web is required. Because of the sandboxing, this may work without any modification of network settings. It has been digitally signed with a trusted root certificate and shows the publisher as 23 Equations.

    MSIX Bundle version 3.3.8 (11/06/2023) ***OLD VERSION***

  2. [Disabled by default in windows] Web hosted .appinstaller - allows automatic updates

    MSIX allows installation files to be hosted on the web, thereby allowing automatic updates etc. Unfortunately, due to a security flaw, this method was recently disabled by default on Windows. For more background on this and how it can be reenabled, go here.

    If you would still like to use this method, the links below can be used. The web page link show information before installing the app using a .appinstaller file. This allows the app to check back for updates so that the latest version is always deployed.

    Web page: https://23equations.com/downloads/appx/EquationApp.AutomaticUpdate/index.html

    Users can also be pointed to the direct link to the .appinstaller via a school internal web page.

    Direct Link: https://23equations.com/downloads/appx/EquationApp.AutomaticUpdate/EquationApp.UWP.appinstaller

Sideloading may be blocked by the network configuration. The app and instillation are sandboxed to make white=listing easier. The app is also signed with a trusted-root certificate so will not need certificate instillations. More information which might be useful for enabling sideloading of the app.