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Notes that disappear into the void.

Private, encrypted, and beautifully minimal. Your thoughts stay yours — always. No ads. No tracking. No cloud. Just notes.

AES-256
Encryption
0
Trackers
100%
Offline-first
9:41●●●
Void Vault
Weekly Goals
Ship the new encryption feature. Call dentist. Read 20 pages...
Today, 09:41
Architecture Ideas
Migrate to Room DB. Ensure PBKDF2 salt is generated securely...
Yesterday
Shopping List
☑ Coffee beans ☑ Mechanical keyboard ☐ Standing desk...
2 days ago
Private Journal
Encrypted. Nobody reads this but you. Not even the developer.
3 days ago

Everything you need.
Nothing you don't.

Void Note is packed with premium features — for free. No paywalls on core functionality. Ever.

🔐

AES-256-GCM ENCRYPTION

Every note is encrypted before it touches storage. Master key lives in Android Keystore (hardware-backed). Zero-knowledge by design.

100% OFFLINE-FIRST

No network required. Ever. Your data never leaves your device unless you explicitly choose to export it. No accounts needed.

👁

BIOMETRIC LOCK

Fingerprint or face unlock. Vault password as fallback. Your notes open only for you.

🔒

PASSWORD-PROTECTED FOLDERS

Lock any folder with its own independent password — separate from your vault password. Protected folders re-lock automatically when the app is backgrounded.

RICH TEXT EDITOR

Bold, italic, underline, strikethrough. H1/H2/H3 headings. Numbered lists with auto-continue. Interactive checklists. Color-coded notes. All the tools you need — none of the bloat.

💾

ENCRYPTED BACKUPS

Export your entire vault as an encrypted .vnbackup file. Restore on a new device. Your key never leaves your device.

🗓

JOURNAL DIARY

A dedicated diary separate from your regular notes. Month-view calendar with dot indicators on days that have entries.

🪟

HOME SCREEN WIDGETS

Three widgets. 1×1 Quick Note, 1×1 Voice Record, and a 4×2 recent notes glance. All capture happens without opening the app. Locked notes never appear.

📁

FOLDERS + TAGS

Organise with nested folders and up to 5 tags per note. Browse by tag, folder, or search everything at once.

🔗

NOTE LINKING

Connect related notes with a tap. Linked notes appear as chips above the tags bar.

📋

NOTE TEMPLATES

Five built-in structures: Meeting Notes, Self-Reflection, Prioritised Todo List, Book/Movie Review, and Blank.

🎙

MEDIA BLOCKS

Attach encrypted voice recordings and images directly to notes. All files encrypted at rest.

🌑

DARK · LIGHT · OLED

Three carefully crafted themes. Extra Dark mode uses true #000000 black for OLED screens. G.I.P ecosystem design throughout.

💻

CODE BLOCKS

Monospace dark-surface blocks embedded right inside your notes. Optional language label and horizontal scroll.

🎯

FOCUS MODE

Focus Mode hides UI elements for a pure canvas. Format Preview renders styles without leaving the editor.

🗂

ARCHIVE + TRASH

Archive notes without deleting. Trash with 30-day auto-cleanup running in the background.

AES-256-GCM ANDROID KEYSTORE PBKDF2 ZERO-KNOWLEDGE

Security that's not optional.

Privacy isn't a feature toggle. It's the foundation. VoidNote was designed encryption-first — your notes are encrypted before they are ever written to disk.

🔑
ANDROID KEYSTORE MASTER KEY

The master encryption key lives in Android's hardware-backed Keystore. It never exists in plain memory longer than needed.

🛡
AES-256-GCM NOTE ENCRYPTION

Every note title, content, and tag is encrypted individually. GCM mode provides authenticated encryption — tampered data is detected.

🧂
PBKDF2 KEY DERIVATION

Your vault password is never stored. It's run through PBKDF2 to derive the encryption key. The salt is stored — the password never is.

VOID NOTE — ENCRYPTION PIPELINE
// User creates a note
val note = Note(title = "My secret", ...)
 
// Fetch master key from Android Keystore
val masterKey = keystore.getOrCreate()
 
// Encrypt title + content with AES-256-GCM
val encrypted = aes256gcm.encrypt(
  plaintext = note.content,
  key = masterKey
)
 
// Only the cipher text reaches Room DB
db.noteDao().insert(NoteEntity(
  content = encrypted.cipherText, // ← stored
  iv = encrypted.iv, // ← stored
  // plaintext never stored ✓
))
 
✓ Note encrypted and saved.

Nothing hidden.
Nothing tracked.

We built Void Note because we were tired of note apps that spy on you, show you ads, or lock core features behind subscriptions.

🚫

ZERO ADS

No advertisements. No sponsored content. Not now. Not ever.

👁‍🗨

ZERO TRACKING

No analytics SDK. No crash reporters. No telemetry of any kind.

ZERO CLOUD

Core features work completely offline. No account required. Your data, your device.

🔒

ZERO COMPROMISE

Encryption is not a premium feature. Privacy is not a subscription tier.

Enter the void.

Free to download. No account. No Play Store needed. Sideload the APK directly — takes under a minute.

Android 8.0+ · Free · No account required

GOOGLE PLAY STORE — COMING SOON

HOW TO INSTALL THE APK

  • 01

    DOWNLOAD & OPEN

    Tap the download button above. Once voidnote.apk finishes downloading, tap Open in your notification panel or Downloads app.

  • 02

    ALLOW UNKNOWN APPS

    If prompted with "Install blocked", tap Settings and toggle Allow from this source to ON. Then press back to resume the installation.

  • 03

    BYPASS PLAY PROTECT

    If Google Play Protect warns you the app is unrecognized, tap More details, then tap Install anyway.

  • 04

    INSTALL & SECURE

    Tap Install. Once finished, open Void Note and set up your encrypted vault password.