Encrypt on your phone
Pick a PDF, JPG or PNG. It gets its own AES-256 key and is encrypted before anything uploads.
Now in beta on Android
Your documents.
Your documents.
Your rules.
Share contracts, IDs and other private files with exactly the people who need them. Set when each one expires and how many times it can be viewed, and take access back at any time.
14:05
Search your documents
Good eveningAlex
Encrypted vault
4
Documents
8.6 MB stored
4 of 10 upload slots used
9People
23Views
All4
Unfiled0
Work2
Personal2
New folder
All documents4 documents
NewestQ3-board-deck.pdf2.4 MB · 3 people · 12 views
Expires in 3 daysWork
Passport-scan.jpg1.1 MB · 1 person
Access offPersonal
Lease-agreement.pdf3.8 MB · 2 people · 5 views
Personal
My files
Add document
Shared
Add documents
Bring it into your vaultPDF, JPG or PNG · up to 20 MB each
Files are encrypted on this phone before they're uploaded. The key that unlocks each file is kept on our server, itself encrypted, and released only to people your rules allow.
6 upload slots left
Folder: Unfiled
Uploads
Q3-board-deck.pdfUploading · 0%
Q3-board-deck.pdfEncrypted and uploaded
ShareDetails
Access rulesExpires Oct 7, 2026, 6:00 PM · Watermark on · Your email hidden
Choose files
Share
People3Links1
Create linkAnyone who opens a link and signs in with a confirmed email gets access, within the limits you set.
Link createdCopy or share it now. For security it can't be shown again.
https://vaulto.pro/open?t=Hk3vQ9xT2mLsW8pZ
Expires Oct 7, 2026, 6:00 PM · Up to 5 people · 2 views each
DoneShare
Q3-board-deck.pdf
2 views leftExpires in 3 days
1 / 4
Every document, who can open it, and the views left.
Opened · 2 views left
Screenshot attempt
Expires in 7 days
Joined via link
Left the app while viewing
Page 3 viewed
View limit reached
Access turned off
Watermark: sam@example.com
Closed · open for 4 minutes
How it works
From your phone to theirs, on your terms.
Four steps, and you stay in charge the whole way. Files leave your phone already encrypted, and nothing opens until the server checks your rules.
Set the rules
Choose when it expires, how many views each person gets, and what the watermark shows.
3
Share with people, or a link
Invite people by email, or send a link or QR code that can expire and cap who joins.
4
Stay in control
Turn access off in one tap, and see every opening, page view and screenshot attempt.
Try it
Set the rules. See what they see.
Change the rules, let a day or two pass, and open the document the way your recipient would. This is a preview in your browser; nothing is uploaded.
Your rulesSharing Q3-board-deck.pdf with sam@example.com
Expires
Views for SamEach time Sam opens it uses one
WatermarkDrawn across every page Sam sees
Security
Built so your rules hold.
Protection happens in three places: on your phone, on the server, and in the viewer. And we're upfront about what no app can do.
Encrypted before it leaves
A fresh AES-256 key for every file. Only the encrypted version is uploaded, and it's decrypted in memory when someone views it, never saved as a readable file.
Q3-board-deck.pdf2.4 MB · readable, only on your phone
Checked every time it's opened
The file's key is only released after the server, using its own clock, confirms:
- They were invited
- Their email is confirmed
- Access wasn't turned off
- It hasn't expired
- They have views left
3In the viewer
Seen only inside Vaulto
Documents open in Vaulto's own viewer, which guards them for as long as they're on screen.
- No screenshotsBlocked and logged, and the page hides while the screen is being recorded.
- Closes when they leaveSwitching to another app closes it, and so does the moment it expires.
- A watermark that followsTheir email, the time, a device ID and the page, drifting across every page.
- Pages, not textShown as images of each page, so there's nothing to select or copy out.
- Modified phones flaggedRooted or debugged devices may appear in your activity log. Best-effort check, not proof.
What no app can prevent
Worth knowing before you share, so you can decide what belongs in Vaulto.
A photo of the screenNothing stops a camera. The watermark makes such a leak traceable to the person and device.
A modified appSomeone with a tampered app could keep a document they were allowed to open.
The service operatorFile keys are stored on our server, encrypted, so the operator could technically decrypt files. We don't look at them.
Activity
Know exactly what happened.
Every upload, share, open and close is recorded by the server. Screenshot attempts and app switches are reported by the viewer's app. Only you can read the log.
Q3-board-deck.pdf2.4 MB · uploaded Sep 24
12Views
3People
1Active links
People with accessTap one to see their activity
Today
11 events
Nothing here for this filter.
Got a Vaulto link?
Someone shared a document with you.
Vaulto documents only open inside the app, so the link on its own never shows the file. Three steps and you're in.
The server checks your access every time the document is opened, so only the people it was shared with can see it.
-
Install Vaulto
Get it from Google Play on your Android phone.
Android 8.0 or newer -
Sign in with the invited email
Use the address it was shared with, then confirm it from your inbox.
you@example.comConfirmed -
3
Open the link again
Tap the link your sender gave you, or find the document under Shared with me.
vaulto.pro/open Lease-agreement.pdf
FAQ
Good questions.
Straight answers about privacy, sharing and plans.
Still have a question?
Write to support@vaulto.pro, or read what we store and your rights in the privacy policy.
Your file is encrypted on your phone, so what we store is ciphertext. Its key is stored on our server too, itself encrypted, so it can be released to the people you allow. That means the service operator could technically decrypt files. We don't look at them, and we'd rather tell you plainly than promise something we can't.
Not inside Vaulto. The viewer blocks screenshots and screen recordings, and attempts show up in your activity log. Nothing can stop a camera, so every page carries a watermark with their email, the time and their device.
An Android phone with Vaulto, and an account using the email address you invited, confirmed from their inbox. Documents only open inside the app.
You can give each person from 1 to 1000 views, or set a per-person limit on a link. Every time they open the document counts. A view is counted when access is granted. If a download is interrupted, trying again can use another view.
Only you can open it. If someone is viewing it at that moment, it closes. Extend the expiry to restore access; expired documents are deleted 7 days after they expire.
Yes. Remove a person or turn access off for everyone, and the server refuses their next open. A document that's already open closes within about 30 seconds, because the viewer keeps checking. Revoking a link stops anyone new from joining with it; people who already joined keep access until you remove them.
Yes. The free plan includes 10 documents, files up to 20 MB and 512 MB of sharing a month. Vaulto Pro raises that to 100 documents, files up to 45 MB and 10 GB a month. It's a monthly or yearly subscription through Google Play that you can cancel at any time.
PDF, JPG and PNG files, up to 20 MB each on Free or 45 MB on Pro. PDFs are shown page by page, with pinch to zoom.
Your lists stay on your phone and uploads wait for a connection. Opening a document always needs the internet, because that's where your rules are checked.
Vaulto is available for Android 8.0 and newer.
Vaulto for Android
Private files. Shared on your terms.
Now in beta on Google Play, for Android 8.0 or newer. Join the beta and we'll send you an invite.
Join the beta