your gold & silver stack tracker
Vault Hollandia is a private digital vault for precious metal stackers/collectors. Track every piece, organize into collections, add photographs and follow the value of your stack, all from your own device.
Available on Windows·Android and iOS
Fill in all the details like weight, purity, cost, premium, date of purchase. All of this will be stored locally and then repriced against live spot from then on. This way you get a complete picture of your stack, and what it's worth. You can use one of the calculators to see what it will be worth when the metals hit a certain price.
Photograph both faces of every coin and bar. Group them into series. You can see the value and an estimated premium value of each series individually and do a PDF export of each individual series as well.
The Android app carries the full ledger, same encryption, same privacy. It is on Google Play now.
Use Windows for quick adding an existing notebook or spreadsheet of your existing stack
Why use my app?
Except for live market prices and founder messages. They require a connection.
Your vault is an encrypted file on your device. Every piece, every photo, every detail.
PIN & passphrase are stored locally, don't forget it because we can't recover it for you.
You can export an encrypted and unencrypted backup, store it where you want. Just in case something happens. Or when you want to use multiple devices.
The only thing the app requires internet for is the twice a day bullion price update, for the live market graph and portfolio tracking.
No server holds your stack. No email, no phone number, not even a payment trail to follow. We advise you to use a VPN as well to boost privacy.
Two ways to keep a copy, each for a different reason.
One file, sealed with AES-256-GCM and locked to your passphrase. It holds your whole vault, every piece, photo and collection, and restores all of it onto any device. Even sitting in someone else's cloud it stays unreadable to anyone but you. And it can only be unlocked with our app, Vault Hollandia.
A clean, readable summary of your stack: totals, weights and every piece. Not encrypted, it is for your own records, your insurer, or the safe alongside your stack so your loved ones understand what you have.
how i did it
Vault Hollandia is a passion project created by me, a precious metals stacker who wanted a premium stack tracker tool I couldn't find anywhere else. I am not a professional software developer or programmer. So I decided to build it myself using Claude code.
Throughout development, I had the code reviewed and challenged by multiple AI tools to identify potential security issues, improve reliability and different perspectives. AI helped me build something I otherwise couldn't have done so, but every decision, feature, and improvement has been driven by the goal of creating something genuinely useful for stacker/collectors.
This project has been built alongside my normal work, with many evenings and weekends invested into making it better. It is still in beta, and there is always more to improve, but my focus has remained the same: creating a private, secure, and honest way for stackers to track what they own. And I'll continue improving it as the project evolves. I believe transparency matters, which is why I wanted to share how Vault Hollandia was built.
in their words
Quotes I was given permission to republish, and older reviews sent from inside the app, shown anonymously.
independent reviews
If you still have doubts about Vault Hollandia, you can visit Trustpilot to see what other people have shared about their experience. And if you have been using the app for a while, I would genuinely appreciate it if you left a review of your own.
Trustpilot is an independent review platform that I have no control over. I cannot edit or remove what people write there, so you can read their experiences in their own words—whether they are positive or critical.
“I'm not a large corporation or a tech company. I'm simply a fellow stacker who wanted a better way to keep track of what I've acquired over time.”
Free. No account. From download to your first entry in minutes
Windows, Android and iOS. Free on all three.
Vault Hollandia
