Android closed test
Android is in closed testing.
CryoIndex for Windows is free on the Microsoft Store now. On Android, Google requires a closed test to run before an app from a new developer can be published: at least twelve people opted in, held for fourteen continuous days. That is the only thing between CryoIndex and general release, and it is the one part no amount of work on the app can finish.
What it asks of you
Open a link on an Android device, accept, install from Play, and leave it installed until the test is finished. That is the whole requirement. Actually using it is welcome and more useful, but it is not what Google is counting.
One thing matters more than it sounds: stay opted in until we tell you the test is complete. Leaving and rejoining restarts your fourteen days as far as Google is concerned, and there is no way for us to see that it happened.
Send one address, and send the right one
We need the Google account that Google Play uses on your Android device — the one you are signed in with there. If you send a work address that is not a Google account, Play will accept it on our side and then quietly refuse to work on yours, with no error shown to either of us. If you are not certain which it is, check Settings then Google on the device.
That opens an email with the details already filled in. If your browser has no mail app set up, write to support@cryoindex.app directly and include the Google account address you use on your Android device.
What happens next
We add your address to the tester list in Google Play Console and reply with a private join link and the install steps. The link only works for accounts already on the list, so it is worth waiting for the reply rather than hunting for the app in Play — a closed test is invisible in search until your account has opted in. If the link seems to do nothing at first, give it a little while and try again; a newly added address takes a moment to propagate.
What it runs on
Android 7.0 or newer. It is built for a ten-inch tablet in landscape, which is what sits next to a dewar; it installs and runs on a phone, but the layout is cramped there. A camera is used for barcode scanning if the device has one and is not required.
What we do with your address
It goes into Google Play Console so Google can grant your account access to the test build, and it stays in the email conversation so we can reach you during the test and tell you when it ends. It is removed from the tester list when the test is over. We do not add you to a mailing list. The privacy policy covers this in full.
The app itself has no account, no server and no network permission at all, so nothing you enter into it can leave your device — including anything you type while testing. Please use fictional or non-critical data anyway.
Try it before you decide
The browser demo runs the real app with fictional data and needs no installation. If it looks like something your lab would use, that is the best reason to join.