For you
Master password
Long, unique and known only to you. It is stored nowhere and cannot be recovered.
SoftwareClu: Tresor
Clu: Tresor: Your digital estate plan
Clu: Tresor is a fully encrypted vault for credentials, notes and documents that can be released to your heirs in the event of death. Through a printed emergency envelope, through a timed release, or through both.
- Runs locally on your device
- No account, no cloud
- AES-256-GCM with Argon2id
- Developed in Switzerland
The problem
Half of a life is digital today A will rarely is
Accounts, portfolios, insurance policies, photographs, contracts, access to business systems. Much of it now exists only behind a password nobody else knows.
- 01
A note in the safe
A list on paper is out of date after the first password change and incomplete when it matters.
- 02
A password manager in the cloud
Convenient day to day, but release in the event of death depends on a provider, on that provider surviving and on its jurisdiction.
- 03
No arrangement at all
The most common case. Relatives stand in front of locked doors without even knowing which doors exist.
Structure
Two keys One vault
The vault contents are wrapped twice: Once with your master password, once with the emergency key. Both open the same contents, neither reveals the other.
For your heirs
Emergency key
Shown exactly once and meant for paper, kept together with your will. It is the most important safeguard.
Features
Everything a digital estate needs
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Encryption in the browser only
AES-256-GCM with Argon2id for key derivation. The server stores ciphertext only and never sees plaintext.
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A printable emergency envelope
A printable sheet carrying the emergency key and clear instructions for your heirs. Paper outlives every provider.
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Timed release
If the vault is not opened for longer than a set period, the registered heirs automatically receive a message with the release.
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Backup and restore
An encrypted backup as a single file, plus a script for an external target such as a NAS or a USB drive.
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Local, off the network
The service binds to 127.0.0.1 only and cannot be reached from the network. No data leaves the device.
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Built for everyday use
Four kinds of records, cleanly separated: Credentials, notes, documents and heirs. Plus the small things that make a tool usable in the first place.
- Automatic locking after inactivity
- Five appearances, three dark and two light, all meeting WCAG AA
- Your own logo can replace the Clu: Swiss Security emblem
- Interface in Swiss standard German, set in the Swiss style
Security promise
We cannot open your vault Nobody can except you
- 01
No account
No registration, no email address, no link to a provider account.
- 02
No cloud
Your data stays on your device. There is no server of ours where it would be stored.
- 03
No back door
Without the master password or the emergency key a backup is worthless. For us as well.
Worth knowing
A supplement to a will Not a replacement
Clu: Tresor supplements a will. The application is not a will itself and does not replace a notarised last will and testament. It makes sure that the last will remains technically enforceable.
The timed release only checks while the application is running. The primary safeguard therefore remains the printed emergency envelope, deliberately so.
System requirements
- Local web app Windows, macOS, Linux
- Node 20+
- Desktop edition no prerequisites, no administrator rights
- Windows 11
- Reachability not visible from the network
- 127.0.0.1
- Licence per licence, excluding VAT
- from CHF 649.00
Packages and prices
The right package for your organisation
One licence covers one vault, the Business licence covers two vaults. All prices in CHF, excluding VAT.
| Package | Price per licence |
|---|---|
| Clu: Tresor Essential | CHF 649.00 |
| Clu: Tresor Business | CHF 949.00 |
| Clu: Tresor Enterprise | individual |
Included in every package
- AES-256-GCM with Argon2id
- Printed emergency envelope
- Timed release
- Backup and recovery
- Local use with no cloud requirement
All prices in CHF, excluding VAT. Enterprise and individual requirements on request.
We clarify with you how many vaults you need and propose the licence that fits.
Frequent questions
What you should know before setting it up
What happens if I forget my master password?
Then you open the vault with the emergency key from the printed envelope. If neither exists any more, the contents stay locked for good. That is not a weakness, it is the heart of the method: There is no recovery path that an attacker could use either.
Where is my data kept?
Solely on your device, in a data folder you can inspect and copy at any time. To make a backup it is enough to copy that folder, or you use the backup export inside the application.
How will my heirs find out about it?
Through the printed emergency envelope you keep together with your will. In addition you can set up the timed release, which automatically sends a message to the registered heirs after a period you choose without a sign in.
Is the application deleted when I uninstall it?
No, the data folder is deliberately kept. A digital estate must not disappear as a side effect of an uninstall. Anyone who really wants to remove the data deletes the folder by hand afterwards.
How do I get Clu: Tresor?
Purchase runs through our office. Write to us briefly stating what you want to use the vault for and how many vaults you need, and we will come back with the licence that fits.
What customers say
Feedback from practice
5.0
14 reviews
Feedback and customer experiences received
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Finally a digital vault that is truly compliant with data protection. The fact that everything remains encrypted locally and requires neither a cloud nor an account is the decisive factor for me. The function of releasing access data to heirs in the event of death solves a long-standing problem. Operation is intuitive, and the encryption (AES-256-GCM with Argon2id) seems robust. An absolute must for anyone who wants to keep their data in their own hands.
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Translated from German
Endlich ein digitaler Tresor, der wirklich datenschutzkonform ist. Die Tatsache, dass alles lokal verschlüsselt bleibt und weder eine Cloud noch ein Konto benötigt wird, ist für mich der entscheidende Faktor. Die Funktion, Zugangsdaten im Todesfall an Erben freizugeben, löst ein langjähriges Problem. Die Bedienung ist intuitiv, die Verschlüsselung (AES-256-GCM mit Argon2id) wirkt robust. Ein absolutes Muss für jeden, der seine Daten selbst in der Hand behalten will.
C***** H*****
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After years of uncertainty about whether my sensitive data is safe in the cloud, I decided on Clu: Tresor. The decision was right. Local storage without an account is a game changer. I particularly like the option of generating emergency envelopes on paper. It is a well-thought-out overall concept that does not just promise security but concretely delivers it. A clear recommendation for everyone who wants control over their data.
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Translated from German
Nach Jahren der Unsicherheit, ob meine sensiblen Daten in der Cloud sicher sind, habe ich mich für Clu: Tresor entschieden. Die Entscheidung war richtig. Die lokale Speicherung ohne Account ist ein Game-Changer. Besonders gut gefällt mir die Möglichkeit, Notfall-Umschläge auf Papier zu generieren. Das ist ein durchdachtes Gesamtkonzept, das Sicherheit nicht nur verspricht, sondern konkret umsetzt. Eine klare Empfehlung für alle, die Kontrolle über ihre Daten wollen.
J***** R*****
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A very well thought-out solution for the digital estate. What particularly convinced me is that the vault works locally.
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Translated from German
Eine sehr durchdachte Lösung für den digitalen Nachlass. Besonders überzeugt hat mich, dass der Tresor lokal funktioniert.
M***** K*****
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Clu: Tresor combines security and estate planning in a very elegant way.
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Translated from German
Clu: Tresor verbindet Sicherheit und Nachlassplanung auf eine sehr elegante Weise.
S***** R*****
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The combination of master password and emergency key is very convincing.
Show original
Translated from German
Sehr überzeugend ist die Kombination aus Master-Passwort und Notfall-Schlüssel.
P***** B*****
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Local storage without cloud and without an account gives me a very good feeling with sensitive data.
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Translated from German
Die lokale Speicherung ohne Cloud und ohne Konto gibt mir ein sehr gutes Gefühl bei sensiblen Daten.
A***** H*****
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Finally a solution with which digital access data and important documents can be organised sensibly for emergencies.
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Translated from German
Endlich eine Lösung, mit der sich digitale Zugangsdaten und wichtige Dokumente sinnvoll für den Ernstfall organisieren lassen.
D***** M*****
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I particularly like that the vault does not depend on a classic cloud account. The concept is clear and consistent.
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Translated from German
Besonders gut gefällt mir, dass der Tresor nicht von einem klassischen Cloud-Konto abhängig ist. Das Konzept ist klar und konsequent.
C***** W*****
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Very well thought out. The emergency envelope makes the concept understandable even for relatives.
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Translated from German
Sehr durchdacht. Der Notfall-Umschlag macht das Konzept auch für Angehörige verständlich.
T***** F*****
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The application is clearly structured and gives a very professional impression from the start. A strong solution for the digital estate.
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Translated from German
Die Anwendung ist klar aufgebaut und vermittelt von Anfang an einen sehr professionellen Eindruck. Für den digitalen Nachlass eine starke Lösung.
L***** S*****
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I find it particularly convincing that the data stays local and yet a regulated release for heirs is provided.
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Translated from German
Ich finde besonders überzeugend, dass die Daten lokal bleiben und trotzdem eine geregelte Freigabe für die Erben vorgesehen ist.
R***** G*****
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A very interesting concept for anyone who does not want to leave their digital estate to chance.
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Translated from German
Ein sehr interessantes Konzept für alle, die ihren digitalen Nachlass nicht dem Zufall überlassen möchten.
N***** E*****
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The combination of encryption, emergency key and timed release is exceptionally well thought out.
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Translated from German
Die Kombination aus Verschlüsselung, Notfall-Schlüssel und Fristfreigabe ist ausgesprochen durchdacht.
J***** T*****
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Clu: Tresor brings order to a topic that is often neglected. Very professionally implemented and pleasantly clearly explained.
Show original
Translated from German
Clu: Tresor bringt Ordnung in ein Thema, das häufig zu wenig beachtet wird. Sehr professionell umgesetzt und angenehm klar erklärt.
V***** B*****
Names are shortened to protect privacy.
Your experience
Already using it?Write to us
We only publish feedback that has actually reached us. Your review is checked and appears with a shortened name, for example as K***** B*****.
Clu: Tresor
Settle it now, while it is still simple
We set the vault up together with you, print the emergency envelope and go through who is to receive what if the worst happens.