Stop buying games
you already own
VaultCheck warns you at the moment of purchase — duplicate detection across all your connected platforms, always in sync.
Free to use · No credit card required · Uninstall anytime
Works across your connected platforms
The problem
Sound familiar?
The double-buy
Spotted a sale, clicked buy, then realised you already have it on another platform.
Backlog blindness
Your library spans so many stores you genuinely don't know what you own anymore.
The unfinished pile
Bought it, played 2 hours, quit — then bought something just like it on impulse again.
Free · No signup · No install
What's your Steam pile of shame worth?
See how many games you own but have never launched— and what that unplayed pile cost you at today's prices. Takes 60 seconds.
Try The Backlog Reckoning →What's your library worth?
See what you already own
Two numbers most multi-platform gamers never see: what you'd avoid re-spending, and how much game you've already paid for.
Games you already own, waiting
~720 hrs
of play you've already paid for, sitting unstarted.
Re-buys you'd likely avoid
~$29 / year
stopped before checkout on games you already have.
Friendly estimates based on typical multi-platform libraries — your real numbers appear once you connect your accounts.
How it works
Three steps to mindful spending
01
Connect your accounts
Link Steam, PlayStation, Xbox, Nintendo, or Epic. Secure import — no passwords stored, no extra software.
02
Browse as normal
The extension runs silently in the background. No interruptions, no extra steps.
03
Get warned instantly
An orange banner appears on the store page the moment VaultCheck recognises a game you already own.
Features
Everything you need to spend smarter
Duplicate Detection
Warns you before purchasing something you already own on any connected platform.
Checkout Warning
Last-chance full-screen alert before you click pay — the moment that matters most.
Cross-Platform
Steam, PlayStation, Xbox, Nintendo, and Epic — all your libraries in one place.
Always in Sync
Steam syncs via API. PlayStation, Xbox, Nintendo, and Epic resync in one click from your dashboard.
Time to Complete
See how long a game takes to finish before spending money on it.
Backlog Stats
See the total hours in your unplayed library and make smarter purchase decisions.
Platforms
All your platforms, one place
Connect once. Resync anytime in one click.
More platforms on the way
Private by design
Your accounts stay yours
No passwords, no browsing history — just the games you own.
No passwords, ever
Steam connects through its official API — your password goes to Steam, never to us. PlayStation, Xbox, Nintendo, and Epic are read from your own library page while you’re already signed in.
Only your game titles
We store the names of games you own and which platforms they’re on — nothing else. No browsing history, no keystrokes, nothing from pages outside the supported stores.
Checks only what you’re viewing
On a store page, the extension reads just that game’s title and checks it against your library. It does nothing on other sites.
You stay in control
Disconnect any platform, or delete your account and entire library, at any time from your dashboard.
Full details in our Privacy Policy.
Pricing
Simple, transparent pricing
Start free. Go Premium to get the most out of the library you already own.
Free
Everything you need to get started.
- ✓Steam + one console platform
- ✓Duplicate detection
- ✓Time to complete data
- ✓Checkout warning screen
Premium
Billed monthly, cancel anytime
- ✓Everything in Free
- ✓All supported platforms
- ✓Backlog analytics — see what you actually have
- ✓Spot your shortest unplayed games to finish next
- ✓Savings tracker
- ✓Priority support
FAQ