Everything is saved. Nothing leaves.

"Nothing is saved" would be the wrong way to say it. The truth is better: everything is saved, and nothing leaves.

Every browser — Chrome, Edge, Safari, Firefox — has a small built-in filing cabinet on your device, and every website gets its own locked drawer in it. When you seal a record, Reckoner writes it into its drawer, on your computer or your phone. No server, no cloud, no account. Close the tab, restart the machine, come back next week — the drawer is still there, and your ledger loads from it.

So the privacy promise is true in the way that matters: your record is saved, but it's saved at home, and it never travels.

The fine print — what that drawer is tied to.

Your ledger belongs to one browser, on one device, at this web address. That has consequences worth knowing before they surprise you:

• Chrome on your laptop and Chrome on your phone are two different drawers — two separate ledgers. (Backups move your record between them — see below.)
• If you clear your browsing data ("clear cookies and site data"), your ledger is erased with it. This is the one real fragility. Export a backup first.
• Incognito and private windows keep nothing after they close.
• Pick one browser for Reckoner and bookmark this address, so your record is always where you left it.

Backups: the three quiet buttons on Home.

At the bottom of Home sit three buttons. They are your insurance:

• Export ledger downloads your entire record as one file. Do it after anything you'd hate to lose.
• Import ledger loads an exported file back in — after a wipe, or on a new device. Reckoner checks the chain before accepting: a backup that was altered gets refused, and the refusal names the entry that broke. Export on the laptop, import on the phone, and your record moves with you.
• Verify the chain checks every seal in your ledger right now and tells you plainly whether your history is intact.

One thing this app cannot do is warn you in the moment: no website can see it coming when you clear your browsing data, and afterward there is nothing left to warn from. The habit is the protection. Export after anything you'd hate to lose — and keep that file somewhere fire can't reach: email it to yourself, or drop it into the cloud drive you already use (Google Drive, iCloud, OneDrive, Dropbox). Your ledger is a file you own; any safe shelf works.

The backup folder — one step better, on a computer.

In Chrome or Edge on a computer, Home has a card called The backup folder. Connect it to a folder you choose, and every seal is written into that folder automatically — no button to remember. The browser asks your permission first and can touch only the folder you picked; nothing else changes hands.

The quiet power move: pick a folder inside OneDrive, Google Drive, or Dropbox. Your cloud app syncs the file everywhere you're signed in — wipe the browser, lose the laptop, and the ledger is still sitting in your drive. On a phone, just open Reckoner and use Import ledger — the phone's file picker can reach your cloud drive directly and load the synced file.

Phones can't do the automatic half — no mobile browser allows a site standing access to a folder — and neither can Firefox or Safari on a computer; there, Export ledger is the same protection with one extra click. One habit keeps it all clean: seal on one device at a time. Two devices sealing separately write two different histories, and the chain will refuse to blend them. That refusal is the seal doing its job.

Set it up, step by step.

On a computer — Chrome or Edge.

1. Open Reckoner in Chrome or Edge and go to Home, then scroll to the card called The backup folder.
2. Click Connect a backup folder. Your computer's folder picker opens.
3. Go into your OneDrive, Google Drive, or Dropbox folder and make a new folder inside it — call it Reckoner — then select it.
4. The browser asks whether this site may view and save changes to that folder. Click Allow (it may say "Save changes" or "Edit files"). That permission covers this one folder and nothing else.
5. Done. The status line now names your folder, and every seal saves into it on its own. After anything important, glance at the "last saved" time — that's your receipt.
6. On a later visit the browser may want a fresh yes: the card will show Reconnect — one click, and saving resumes.

On a phone — and Safari or Firefox anywhere.

1. These browsers can't give a website standing access to a folder, so the backup is two taps instead of zero: when you've sealed something you'd hate to lose, go to the bottom of Home and tap Export ledger. A file downloads.
2. Move that file into your cloud drive: on a phone, open your Files app (or the Drive, OneDrive, or Dropbox app) and save the download into your Reckoner folder. On a computer, drag it there.
3. To bring your record onto any device — or back after a wipe — open Reckoner there and tap Import ledger, then pick the file from your cloud drive. The chain is checked before anything is accepted, and you'll be asked before anything is replaced.
4. The one habit that keeps it clean: seal on one device at a time, and export before you switch.

Where the brain lives.

The map, the calendar, and the brain pages don't keep separate copies of anything. Every time you open them, they are drawn fresh from your ledger — your records become the dots, and the links between records (which decision leaned on which claim, which entries share a thread) become the lines. Delete nothing, add nothing, and the same picture appears every time.

Which means protecting your thinking is one job, not four: protect the ledger, and the brain, the map, and the calendar are all protected with it. One export covers everything.

The downloads — no special folder required.

The Reckoner file, the stage contracts, and your receipts land in your regular Downloads folder, like anything else you download. The app never needs them back: the drawer is the working copy; the downloads are the paper trail — for handing to an AI, and as spare copies of your story.

One tidy habit is worth keeping anyway: give everything this app hands you a single folder — for example Documents\Reckoner. The filenames carry their dates, so that folder becomes a chronological archive all by itself.