dminshark
Life admin + a private vault

Nothing lapses. Nothing leaks.

One quiet app that reminds you before anything's due, and keeps your documents, IDs, investments and a private diary in an encrypted vault. It all lives on your phone; only you can open it.

Free on iOS & Android
psst… the shark follows your cursor. Click the water.
Contact tag · new in 1.6

Let anyone reach you
about your car.

A QR sticker for your windscreen. Someone scans it, writes to you, and your phone buzzes, without either of you ever seeing the other's number.

  1. The Contact tag screen in AdminShark, showing the tag's QR code, its tag.adminshark.app link, a Print sticker button and a switch for which reasons a finder can pick
    Scan to message owner
    01

    Stick it

    Make the tag in AdminShark. Print it. Stick it on. That is the whole setup, and each car gets its own.

  2. 02

    Scan it

    A stranger points their camera at it. No app, no sign-up. They pick a reason or type a note, and it is sealed in their browser before it leaves.

  3. A vehicle page in AdminShark listing registration, inspection and insurance renewals, with a Contact tag card marked Active and one new message
    The Tag messages screen in AdminShark showing a Blocked in message from a finder and the owner's reply, On my way
    03

    Get the ping

    Your phone buzzes and you can reply in a private thread. The relay only ever passes ciphertext it cannot read, so nobody in between sees a word.

  • End-to-end encrypted
  • No numbers shared
  • Threads vanish after 24 hours
  • Premium feature

Scans are kept for 7 days and threads for 24 hours. Pause the tag, choose which reasons people can pick, or regenerate it whenever you like. More in the FAQ · How it handles data

Everything that matters,
in one private place.

Life admin on the surface: every car, policy, warranty and subscription, sorted by what needs you next. A vault underneath: documents, IDs, investments and a private diary, encrypted on your phone.

Reminded before anything is due, so nothing lapses
Documents, IDs, investments and a diary, encrypted on-device
Backups only you can open, with your recovery phrase
Free for your first 4 assets, with no ads ever. No accounts, no sign-in; we never collect your records
AdminShark home screen on iPhone showing vehicle, insurance and subscription renewals sorted by what is due next
iOS
AdminShark spending insights on Android showing yearly cost across insurance, warranties and subscriptions
ANDROID

Life admin, meet your vault.

Reminders that don't quit

Vehicle renewals, insurance, warranties, subscriptions: the shark circles back before each one is due. Overdue is a thing that happens to other people.

A vault for what matters

Passports and IDs, bank & investment details, wills and property papers, even a private diary. The things your family would need, kept in one place.

Locked to your phone

Encrypted on your device, behind Face ID or your passcode. No account, no sign-in, and a backup only your recovery phrase can open. Not even we can read it.

Your records never leave your phone.

No account to create, no copy of your records on any server, nothing of yours anywhere but your own device. Privacy here isn't a setting you switch on; it's the way the app is built.

Only you can open itThe app unlocks behind Face ID, your fingerprint or your device passcode. Close it and it locks itself again.
Backups only you can readYour recovery phrase locks them, so a backup you save or share opens for you and no one else. Not even us.
Your records, never soldWe don't collect your records, watch what you save, or sell anything to anyone. Nothing leaves your phone unless you send it: feedback you write, or a message someone sends you through a Contact tag sticker, encrypted so only your phone can open it.

Questions, answered.

Is it really free?

Yes, and with no ads, ever. Every feature is included free for your first 4 assets: reminders, the encrypted vault, backups, all of it. When your household outgrows four, Premium unlocks unlimited assets for a small monthly price or a one-off lifetime purchase.

Where does my data live?

On your phone. There's no account and no sync, so we never receive a copy of your records. Your phone's own Google or iCloud backup may include the app's data, like your other apps (that's your cloud, not ours, and you can turn it off). You can also export a backup file anytime that only you hold.

Is my data encrypted?

Yes. Everything is stored in an encrypted vault on your device, and the app opens behind Face ID, your fingerprint or your device passcode. With no account and no sync, your records never leave your phone in a form anyone else could read.

What can I track?

Two kinds of thing. Renewals: vehicle registration and inspections; vehicle, health, life, home & contents insurance; warranties; subscriptions, each with its provider, cost, dates and a photo of the paperwork. And records for the vault: passports and IDs, bank and investment details, wills and property papers, digital accounts, and a private diary.

What is the Contact tag?

An optional Premium sticker for your car. Someone who needs to reach you scans the QR code and writes to you, and you get a notification, without ever seeing your phone number. Their message is encrypted for your phone before it leaves their browser, so nobody in between can read it, and it is deleted within a day. You can pause or delete the tag any time. How it handles data.

How do reminders work?

A notification on your phone at 9am, a configurable number of days before each thing is due (30 by default). No emails, no texts, nothing that needs an account.

What if I change or lose my phone?

Export a backup from Settings (a single encrypted file you keep in your own cloud drive or send to yourself), then import it on the new phone and unlock it with your recovery phrase. Because everything is on-device, that backup is your safety net, so take one now and then, and keep your recovery phrase somewhere safe.

What's the recovery phrase?

A short set of words you set up once. It's the key to your backups: if you share a backup or move to a new phone, the file can only be opened with your recovery phrase. Keep it somewhere safe, because it's the one thing we can't reset for you, and without it a backup can't be opened, not even by us.

Does it work in my country?

Yes. AdminShark adapts to where you are, using your country's own terms for vehicle admin and showing costs in your local currency. Insurance, warranties and subscriptions are universal, so it works anywhere.

How do I get in touch?

Anything at all (a bug, a feature idea, a question): email [email protected] and a real person will read it.