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Private news reader

Read without
being read.

Your news digest.
Without the
surveillance.

Your daily
digest. Not
your data.

Private news
digest. No tracking.
No profiling.
No compromise.

200+ news feeds and blogs in one private daily digest. End-to-end encrypted. No tracking, no profiling, no ads. Your reading list never leaves your device in plaintext.

Get Started How it works
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/ Why this matters
NY Times DHS Wants Social Media Sites to Expose Anti-ICE Accounts → The Hacker News Meta to Shut Down Instagram End-to-End Encrypted Chat → Ars Technica Gmail's 'End-to-End Encryption' Isn't Actually E2EE → The Standard Meta Scanning Your Phone's Entire Camera Roll → The Edge Singapore Lawsuit: Meta Can Read WhatsApp Despite E2E Claims → TechRadar EU 'Chat Control' Threatens Mass Surveillance of Private Messages → The Verge Cuba Aid Convoy Had Phones Seized by CBP at the Border →
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/ Architecture
We can't read your data AES-256-GCM, PBKDF2 100k iterations
Sites can't track you Server-side content extraction
You control the algorithm Encrypted embeddings, transparent scoring
Architecture you can verify ECDH P-256, AES-256-GCM, open source
/ Your data

You control

  • Your passphrase (never sent to server)
  • Your interest model (encrypted)
  • Your saved articles (encrypted)
  • Who you share with
  • What you share (E2E encrypted)

We see

  • Encrypted blobs we cannot decrypt
  • Nothing, it is encrypted
  • Routing metadata only
  • Hashed user IDs
  • Opaque encrypted content
"Even with a court order, we hand over gibberish."
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/ What you get

Daily Digest

15-25 curated articles per day Natural stopping point—no infinite scroll Transparent relevance scores

AI Analysis

Thesis extraction Evidence quality assessment Rhetoric detection (fallacies, framing)

Reader Mode

Clean, distraction-free reading Server-proxied content Works on paywalled articles

Private Sharing

E2E encrypted group chats Threaded comments with reactions Social graph hidden from server

Import Your Data

Twitter/X, Reddit, YouTube, bookmarks Jumpstart your interest model All processing encrypted

Multi-Platform

PWA: install on any device Offline digest viewing Dark/light theme

/ How we compare
Feature Penumbra Feedly Flipboard X
E2E Encrypted ✓ ✕ ✕ ✕
Zero-knowledge server ✓ ✕ ✕ ✕
No tracking ✓ ✕ ✕ ✕
Private sharing ✓ ✕ ✕ ✕
Transparent algorithm ✓ ✕ ✕ ✕
Ad-free ✓ Paid ✕ Paid
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/ Your browser matters
Tor Browser
Tracking Strong
Fingerprint Strong
Best for privacy, slower
Mullvad Browser
Tracking Strong
Fingerprint Strong
Tor's tech, normal speed
Brave
Tracking Strong
Fingerprint Moderate
Good default choice
Firefox + uBlock
Tracking Good
Fingerprint Moderate
Solid with extensions
Safari
Tracking Good
Fingerprint Moderate
Decent on Apple
Chrome
Tracking Minimal
Fingerprint Weak
Avoid for privacy
/ Honest limits
When you click external links You leave our protection. Destination sees your IP and browser fingerprint. Use Reader mode to stay protected.
Passphrase loss = data loss We cannot recover your data. This is a feature, not a bug. Store your passphrase safely.
Compromised devices If your device is compromised, all bets are off. Penumbra can't protect against keyloggers.

Start reading privately.

Free to use. No credit card. No tracking.

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