Privacy
Assay is a personal finance book. It holds figures about your money, so this page says plainly what is stored, who can reach it, and how to get rid of it. Last updated 17 August 2026.
Two apps, and only one of them collects anything
Assay is the grown-up app. You sign in with Google and your months are kept on our server. Everything below this box is about that app.
Assay Kids is a separate app for children. It has no account, no sign-in and no password, and it never sends anything anywhere. Every figure a child writes down stays on that phone. We do not receive it, cannot see it, and hold nothing to delete — there is no server involved at any point.
Moving a child's book to another phone is done with a file the parent saves and sends themselves. It does not pass through us.
What is stored
| What | Why | Where it comes from |
|---|---|---|
| Email address | Identifies your account so you can sign back in | Google, when you sign in |
| Display name and profile picture | Shown to you, and your name is shown to friends you accept | Google, when you sign in |
| Your figures — income, extras, entries, buckets, subscriptions, holdings | They are the app | You type them |
| Country and currency | Formats amounts, and converts metal prices | You pick them at setup |
| Friend connections | Only exist if you exchange codes and accept | You |
There is no analytics, no advertising, no tracking, and no third-party SDK collecting anything in the background. Nothing is sold or shared with advertisers, because nothing is collected for them.
Who can see your figures
You. Every row in the database is fenced to its owner by row-level security, which is enforced by the database itself rather than by the app asking nicely.
Friends are the one exception, and a deliberately narrow one. If you exchange codes and both accept, a friend can see the percentage of a month you kept, how many months in a row you have written something down, and the date you last wrote. They can never see an amount — not your income, not a balance, not a holding, not a single line. That limit is written into the database function, not into the screen, so no version of the app can widen it. You can pause sharing at any time and keep the friend.
Where it lives
On a private server run by the app's operator, not on a third-party cloud database. Sign-in is handled by Google; Assay never sees or stores your Google password. Live gold and silver prices are fetched by the server, not your device, so the price sources never see who is asking.
Deleting your account
In the app: Settings → Delete my account.
You will be asked to type DELETE to confirm.
Or from here: delete your account on this site.
Deletion is immediate and permanent. It removes your account, your profile, every month, every line, every extra, every subscription, and every friendship in both directions. There is no recovery, no grace period, and no copy kept for us to change our minds about.
One honest caveat: encrypted database backups are kept for up to 14 days for disaster recovery, and rotate out automatically after that. They are never used to restore an individual account.
Children
Assay — the app described on this page — is not directed at children under 13, and asks for a Google account, which they should not be creating. A child who wants to keep track of pocket money should use Assay Kids instead.
Assay Kids is made for children, and is built so that using it collects nothing at all. There is no account to create, no personal information asked for at any point, and no connection to a server. It contains no advertising, no analytics and no purchases of any kind. Because nothing is ever transmitted, there is nothing for a parent to request, correct or have deleted — clearing it is done on the phone, in Settings, under "Start again".
The name a child types when the app first opens is used only to greet them on their own screen, and never leaves the device.
Changes
If what is collected ever changes, this page changes with it and the date at the top moves.
Contact
Questions, or trouble deleting something: [email protected].