Four routes, each under its own name
Get RJV
Use RJV in a browser, install the web app from that browser, or run the platform on a host you own. RJV has not released a native application for any device, and nothing on this page is offered under that name.
- BrowserAvailable now. Nothing is installed.
- Web appThe same site in its own window. It needs the connection.
- Native applicationNot released for any device.
- A host you ownThe platform installs on Linux x86-64 with PostgreSQL 18.
Available where the browser supports it
Install the web app
The web app is this site, installed from your browser. It opens in its own window under the RJV name and icon. It is not a native application.
How to install it
- Android, in Chrome
- Open the browser menu and choose the option to install the app or add it to the home screen.
- iPhone and iPad, in Safari
- Use Share, then Add to Home Screen.
- A desktop browser that installs sites
- Use the install control in the address bar or the browser menu.
What it keeps on the device
The stylesheet, the script, the manifest and two icons. It never stores a page, never replays a submission and never reports an operation as complete.
Without a connection
It shows a page saying that the server is needed. No work is done on the device, and nothing is queued.
What has been checked
Installation, touch input and device lifecycle have not been verified on iOS, iPadOS or Android. The limitations page records what was tested and how.
Not released
Native application
There is no native RJV application to download for Android, iOS, iPadOS, Windows, macOS or Linux.
What this release does on a phone or tablet
| Question | Answer for this release |
|---|---|
| Find this offering | Browser |
| Carry out every authorised operation | Client |
| Compute on the device itself | Not supported |
| Use a host you own | Client |
| Work without the host or the internet | Not supported |
Nothing here needs a desktop: every operation this site offers is performed in the browser, on a screen down to 320 CSS px, the narrowest width RJV tests, and RJV does not distribute a native phone or tablet application. Where a row reads Not supported, the browser is the alternative: the release is not installed on the device, no offline mode exists, and the host you control must be reachable. Device sensors and accelerators are not used.
What a native download must show before it is listed here
- A signed package for one named operating system and processor architecture, with its version, size and SHA-256 digest.
- Installation, update and removal carried out on a real device of that kind.
- Its own interface and at least one real operation completing with the network off.
A home-screen shortcut, a link wrapper or a window that only loads this website is not listed as a native application.
The platform itself
Run it on a host you own
The platform is one application binary and a PostgreSQL 18 database, for a customer controlled Linux host on x86-64 (linux-x86_64-customer-controlled). rjv preflight checks a device before anything is installed, and rjv install lays down a signed release.
No platform licence is on sale and no customer deployment has been agreed yet. A deployment is arranged as an engineering engagement.
Last reviewed 11 November 2026.