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Guide · Comparison

Offline password vaults vs cloud password managers

Both are defensible choices. They protect you against different things, and the marketing on either side rarely admits it. Here is the comparison without the spin.

What "offline" actually means

The term gets used loosely, so it is worth being precise. An offline vault means the encrypted file lives on your own device and is not synchronised to a provider's servers. Unlocking happens locally. There is no account with the vendor, and no copy of your data on their side.

It does not mean the application can never touch a network. Most offline tools have some optional online feature — a price lookup, an update check. What matters is whether your vault contents are transmitted, and whether the feature is off by default. CofferShield, for instance, works entirely offline; the one optional exception is a market-price lookup that sends ticker symbols only, and is off until you switch it on. We spell that out on the security page rather than claiming a blanket "100% offline".

Be suspicious of any product that markets itself as absolutely offline without naming its exceptions. Everything has exceptions.

The comparison, without the marketing

	Cloud manager	Offline vault	Paper
Sync across devices	Yes, automatic	Manual, or none	No
Browser autofill	Excellent	Limited or none	No
If you forget the master password	Some offer recovery	Data is gone	Not applicable
If the vendor is breached	Your encrypted vault may be taken	Nothing of yours is on their side	Unaffected
If the vendor shuts down	Export window, then trouble	Your file keeps opening	Unaffected
If your laptop is stolen	Vault is still in the cloud	You need your own backup	Unaffected
If your house burns down	Vault is safe	You need an off-site backup	Gone
Ongoing cost	Usually a subscription	Often one-time	Free

Read down the two "if" columns and the shape becomes clear: cloud managers are strong against your failures, and offline vaults are strong against the vendor's failures. Neither is universally safer.

Threat models, plainly

An offline vault fits better when…

• You hold material you consider unacceptable to place on someone else's infrastructure at all — seed phrases, deeds, private instructions.
• You want to be unaffected by a provider's breach, outage, acquisition or price change.
• You would rather pay once than hold a subscription indefinitely.
• You are comfortable being responsible for your own backups.

A cloud manager fits better when…

• You need seamless autofill across a phone, a laptop and a work machine.
• Several people need shared access to the same credentials.
• You are realistically not going to maintain your own backups.
• You would rather have a recovery route than absolute exclusivity.

That last point deserves emphasis, because it is the one people get wrong. If you know yourself well enough to know you will lose an unrecoverable master password, a cloud manager with account recovery is the safer choice, and choosing otherwise on principle is how people lose everything.

What you give up going offline

Being straight about the costs, because they are real:

• Backups become your job. An offline vault is a file. Files get deleted, drives fail, laptops get stolen. Automatic encrypted backups to a folder you choose help, but you still have to point them somewhere sensible and keep a copy off-site.
• Recovery does not exist. No reset link, no support override. The master password must be written down and stored physically.
• Sync is manual. Moving the file between machines is your responsibility.
• Autofill is weaker. Expect to copy and paste more often than you would with a browser extension.

How to judge any offline vault

1. Which cipher, and how is the key derived? AES-256 with a slow key-derivation function is the baseline. CofferShield uses AES-256-GCM with PBKDF2-SHA256 at 600,000 iterations.
2. Can you verify the network claim yourself? Open developer tools or your OS network monitor and count the requests. A vendor confident in the claim will invite you to check it.
3. What is the export path? If you cannot get your data out in one file, you are locked in regardless of where it is stored.
4. Has it been independently audited? Ask directly. CofferShield has not been, and says so on the security page rather than implying otherwise.
5. What happens if the company disappears? If the answer involves a licence server, it is not really offline.