Sync across your devices
Your logbook lives on your devices and nowhere else, so your devices copy it to each other directly, over your own Wi-Fi. Nothing in this area involves a server holding your flights.
Read I1 first. It explains how sync works, and every other guide here builds on it. After that, pick the guide for what you’re doing: getting the logbook onto a device for the first time (I2, I3), keeping two devices up to date once they both have it (I4, I5, I6), or fixing one of the four things that stop a sync (I7, I8, I9).
| Guide | What it gets you | |
|---|---|---|
| I1 | How cloud-less sync works | How it works: what travels, which version wins when both devices changed something, what never leaves the device |
| I2 | Move a profile to a new device (QR) | Your existing logbook on a second device, by scanning a code |
| I3 | Move a profile over the air | The same, for a device with no camera |
| I4 | Pair two devices with a PIN | A device that already holds the logbook made a member of it, so future syncs stop asking |
| I5 | Run a sync | A finished sync, and what its result does and doesn’t tell you |
| I6 | Review changes from other devices | What a sync overwrote on this device, and your version back if it was wrong |
| I7 | Manage paired devices | Which devices sync this logbook, and a lost or sold one removed |
| I8 | Sync after restoring a backup | A device you restored a backup onto, syncing again |
| I9 | Sync troubleshooting | A name and a next action for every way a sync fails |
Where sync lives
Two routes lead to the same screen, titled Cloud-Less Sync:
- From the dashboard, tap the Cloud-Less Sync card.
- From Profile Settings, tap Data Sync → Cloud-Less Sync.
Almost everything in this area starts from the four icons in that screen’s app bar:
| Icon | Tooltip | What it opens | Guide |
|---|---|---|---|
| QR code | Invite a device | The invite panel, on the device that has the logbook | I2, I3 |
| Scanner | Scan invite | The scan panel, on the device receiving it | I2, I3 |
| Clock | Changes From Devices | The log of what incoming syncs overwrote here | I6 |
| Gear | Sync settings | Device ID, listening address | I9 |
Two things aren’t on that screen. Devices — your devices, and which of them sync this logbook — is at Profile Settings → Account & Data → Devices (→ I7). And on a device with no logbook on it at all, Scan invite is reached from the profile selector’s + button instead (→ A4).
Three ways to pair, and they aren’t interchangeable
Each way asks you to confirm something different. Knowing which screen belongs to which saves you an evening.
| Path | Use it when | What you confirm |
|---|---|---|
| QR or pasted code (I2) | The new device has a camera, or you can paste a code into it | A single screen reading Join “<name>”?, answered with Bring it over |
| Over the air (I3) | The new device has no camera | Five emoji, shown on both screens, compared by you |
| PIN (I4) | Both devices already hold this logbook | Six digits, shown on one device and typed into the other |
Sync is free
There’s no Pro gate on any of it. On a free profile the sync screen carries a dismissible banner reading “Cloud-less sync is fully unlocked! Consider upgrading to Pro to support the developer.” That’s a thank-you, not a limit.
Words this area introduces
Peer — another device holding the same profile. It’s the app’s own word, and you’ll see it on the sync screen and in error messages.
Pairing — the one-time step that makes a device a member of this logbook, so it syncs without asking again. There are three ways to do it, listed in the table above, and a new device needs pairing with only one of your devices, not each of them.
Invite — a one-time code made by the device that already has the logbook. It carries that device’s address on your network, its security fingerprint and a single-use key. It’s good for 15 minutes, and works once.
Member — a device that’s been paired with this logbook. Members travel with the logbook: pair a new device with any one of them and, once your devices have synced, all of them accept it (→ I1, I7). The app’s own word for pairing by PIN is trust — the box that does it reads Trust this device, and it starts ticked.
Sync Status — the app’s bookmark of what this device has already sent each other device. With no bookmark, the next sync sends everything. That’s why the first sync after copying a profile to a new device, or after a restore, is slow.
Changes From Devices — the log of what an incoming sync overwrote on this device. Despite the name, it isn’t a full sync history (→ I6).