Sync

Svodly works fully offline — the cloud is only needed if you have several devices, shared access to a book, or want a backup. The only cloud is the Svodly Cloud.

Third-party clouds (Yandex.Disk, Google Drive, WebDAV, Dropbox) are not supported for syncing: they have no access-control system at the Svodly level, which is needed for working together and keeping control over your data. More on why it works this way.

What the cloud gives you

• Several devices — one book on your phone, laptop and the web, with a single history.
• Shared access — several members in one book.
• Backup — your data is duplicated on the server (for the web version this is the main way to restore it).
• Voice input and the FNS receipt scanner — recognition goes through our server, so without the cloud these buttons stay inactive.
• CBR exchange rates — for a book with accounts in different currencies, the aggregate balance is converted into the base currency at the official CBR rate (see “Accounts” → several currencies).

On desktop and mobile the app works in full without the cloud — the whole book is stored locally. The web version inherently requires an account (it is a service running on a server).

Connect the Svodly Cloud

1. Open Sync and tap Connect Svodly Cloud.
2. Sign in with an existing account or sign up: email and password (confirmation is a 6-digit code in an email), or with one tap via Google (in the Russian interface — Yandex ID and VK ID).
3. After you sign in, Svodly will send your local book to the cloud and turn on sync. The first push takes a few seconds for a typical book.

More about the account, password recovery and deletion on the “Svodly Cloud account” page.

How it works

Svodly syncs not as a “whole file” but as small events: every create, change or delete is a separate record. Other devices apply these events on their side. Order and conflicts are resolved deterministically (hybrid logical clocks, “the last edit of a field wins”) — without any manual conflict handling.

• Auto sync — after an action the event goes to the cloud, and new events from other devices are pulled in automatically. No network — events pile up in a queue and go out at the first connection.
• Manually — the Sync now button in the “Sync” section forces an exchange immediately.
• History compaction — over time the app collapses old events into a compact snapshot. Automatically, without your involvement.

Devices and sessions

The “Sync” section shows the list of devices connected to your account. Any session can be revoked — the device will lose access to the cloud (for example, if you sold a laptop or lost a phone). The local copy of the book on the revoked device stays, but stops syncing.

At the bottom of the same column sits the “Where else to open your book” card. It is a reminder of what Svodly runs on besides your current device: a computer (Windows, Linux and Astra Linux), a phone (Android) and the browser (app.svodly.ru) — the platform you are on right now is marked “you're here”. The button leads to the download page with every version. On the phone the same block appears on the cloud connection screen and under the device list in your profile.

What goes to the cloud

The book's contents — in their original form, protected on our side by disk and database encryption (at-rest at the infrastructure level). Traffic runs over TLS 1.3. This is not end-to-end encryption: on our server engineers can technically see the data during service operations (migrations, diagnostics), but do not do so without your consent.

Attached files (receipt photos, PDFs) do not go to the cloud yet — only their metadata syncs between devices, while the file itself stays local. More on the security model on the “Security” page.

The “Update the app” notice

The devices of one book don't have to be on the same version: a phone updates through the app store, a computer on its own cycle. Usually that is fine. But if another device is already writing the book in a newer format while this one is not, some of the changes simply won't reach it.

In that case Svodly says so up front, in one line: “Update the app: another device is writing this book in a newer format, and some changes will not reach this one.” The notice lives on the “Sync” screen (on the computer and on the web) and as a banner in the “Sync” group of the profile (on the phone).

• Update the app on this device — the warning clears itself, and the changes that didn't make it are pulled in.
• The notice can be dismissed with the cross. If the book's format moves further ahead, it comes back.
• Only writing moves the marker: a device that merely reads the book does not trigger this notice for the others.

If sync isn't running

Open “Troubleshooting” — it covers the typical causes (an expired session token, no network) and how to work around them.

Where to go next

• Svodly Cloud account — sign-up, sign-in, recovery, deletion.
• Shared access — keeping a book together with several members.
• Import & export — move a book to another device once as a file, without the cloud.
• Security — what is stored in the cloud and who can see it.