Google Drive vs Dropbox vs Nextcloud for your books

Short answer: Drive if you want it to just work, Dropbox if you sync constantly across several devices, OneDrive if you already live in Microsoft’s world, and Nextcloud if you want the files on hardware you control. All four are fine; the differences show up at the edges.

What is actually being synced

Three different things travel together, and they behave differently:

• The book files. Big, written once, read many times. Any cloud handles this well.
• Your reading position. Tiny, written constantly, and the thing you notice when it goes wrong. This is where sync systems earn their keep.
• Highlights, notes and bookmarks. Small, edited on both devices, and the most likely source of a genuine conflict.

A folder-based reader like Lectern writes all three into the folder you pick, so there is no server in the middle holding your library. The trade-off is that the cloud provider’s behaviour becomes your sync behaviour.

The four, compared

Google Drive: the default that is hard to argue with

It’s already on the phone, signed in, with the largest free allowance of the big three. Android’s file picker talks to it natively, so pointing a reading app at a Drive folder takes about four taps. Sync of small files is a little lazier than Dropbox’s, which in practice means your reading position may lag by a minute rather than a second.

If you are choosing without a strong reason, choose this and move on.

Dropbox: the best sync engine, the smallest free tier

Dropbox has spent nearly two decades on one problem, and it shows: small-file sync is fast and conflicts are handled visibly rather than silently, with a clearly named conflicted copy you can inspect. For someone reading the same book on a phone, a tablet and an e-ink device in the same evening, that reliability is worth something.

The free tier is the tightest here. A few hundred EPUBs will fit; a comics collection will not.

OneDrive: quietly good if you’re already there

Nothing exciting and nothing wrong. If you have a Microsoft 365 subscription, you have a lot of space you have already paid for, and the Android integration is solid. Choose it because the space exists, not because it does anything special for books.

Nextcloud: the one where the files are yours

Nextcloud is open-source software you run yourself, on a home server, a cheap virtual machine, or a hosted Nextcloud provider if you want the software without the sysadmin. It is the only option in this list where the answer to “who can read my library?” is genuinely “me”.

The cost is real, though: you are now responsible for updates, backups and the day the disk fills. It also means your sync speed is your upload speed. If you already run a server, this is clearly the best choice. If you don’t, be honest about whether you want to start.

Conflicts, and how to avoid them

A conflict happens when two devices change the same thing before either has seen the other’s change. With books that usually means you read on a tablet in flight mode, then opened the phone before the tablet came back online.

Three habits remove nearly all of them:

1. Let the app finish syncing before you switch devices. A few seconds with the screen on is enough.
2. Give the offline device a moment to catch up when it comes back online, before you read further on it.
3. Keep one books folder, not several. Most “sync is broken” reports are two folders that were never the same folder.

When a conflict does happen, all four providers keep both versions rather than deleting anything, which is the property that matters. You may need to open the folder once and delete a duplicate.

The privacy question, honestly

With Drive, Dropbox and OneDrive, the provider holds the encryption keys and can technically read what you store. In practice they are not interested in your copy of a novel, but the capability exists, and the applicable law depends on where the company and its servers are. If that matters to you, Nextcloud on your own hardware is the only answer on this list that changes it.

What none of them do, if your reading app is folder-based, is see your reading data as a product. That’s the point of syncing through a folder you own: the app maker never has it either. More on that approach in sync your reading progress without an account.

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