Cloud storage decision

Dropbox

A file uploader is easy; trustworthy multi-device sync is not. Conflict resolution, offline behavior, recovery, sharing security, and data durability justify the subscription.

Visit website
You pay

$11.99/mo

$144/yr

Read off the official pricing page.

You’d pay instead

$50one-off24 h to build

$8/mo4 h/mo upkeep

On cash alone, building overtakes the subscription at 2 seats.

The code exists. It is not what you are paying for.

This project is real, published, and does the core job — and this page still says keep paying. What the subscription buys is conflict-free synchronization, data durability and secure sharing, and none of that ships in a repository. Fork it anyway if you want to. Go in knowing what it does not carry. What stays hard ↓ · All Dropbox alternatives, with the arithmetic →

What a replacement has to do

  • Browser upload and download
  • Folders
  • Share links
  • Simple version history

What it still won’t have

  • Native background sync
  • Conflict resolution
  • Offline files
  • Recovery guarantees
  • Mature security controls

What remains hard

  • Conflict-free synchronization
  • Data durability
  • Secure sharing
Read the build prompt

First-year cost

Keep paying

Paying is—cheaper in year one.

On cash alone, building overtakes the subscription at 2 seats.

Paid seatsseats

Money you would actually spend

Keep paying
—

Subscription price × seats × 12

Build it
—

AI build —APIs + hosting —

Time you would spend

—

—

What you would spend

What we assumed

The verdict above measures whether you could build it. This one is only about money.

Runnable build prompt

Not run yet
Build a small private browser-based file vault, not a Dropbox sync client.

Use Astro server rendering, TypeScript, PostgreSQL, and S3-compatible object storage.
Require email magic-link authentication for one owner.
Support folder creation, upload, download, rename, move, delete, and restore.
Generate expiring signed links and never expose bucket credentials.
Keep the last five versions of a file and a 30-day trash.
Hash uploads, reject dangerous file names, and enforce configurable size limits.
Add an append-only audit log and a storage-usage screen.
Do not build desktop sync, offline support, collaboration, or public permanent links.
Add tests for authorization and signed-link expiry.
Document backups and the limits of this replacement.
How we checkedno sources · evidence score 34