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01 ingest 02 vault 03 recall 04 retain

Your NotebookLM, offline & remembered.

Turn ephemeral AI summaries and audio discussions into permanent recall. Drop in your exported notebooks, study offline anywhere, and defeat the forgetting curve with daily spaced review.

✓ 100% Offline SQLite · ✓ Zero Telemetry · ✓ macOS · Windows · Linux
NotebookLM Export Neurobiology_2026.nb
Offline Synced

Deep Dive: Synaptic Plasticity

2-Host AI Briefing · 14m 20s offline cache

1.5× Pitch Fix
04:12 / 14:20 · +25 XP
Active Recall Card #04

What mechanism mediates Long-Term Potentiation (LTP)?

NMDA receptor activation and Ca²⁺ influx driving AMPA receptor insertion.

Deep Work Sprint
25:00
Notebook: Quantum_Computing_Intro
Memory Stability
14-Day Streak
94%

Next review in 3 days · Level 7 Scholar

The 4-Stage Method

From raw AI output to permanent memory.

Default NotebookLM is great for summarizing, but poor for retention. Engram builds an end-to-end pipeline that ensures you actually remember what you research.

01 INGEST Zero Friction

Drop files. Auto-index.

Download your audio overviews (.mp3 / .wav) and briefing notes (.md / .txt). Drop them into Engram. The app automatically extracts key topics, parses transcripts, and organizes your library.

Drop zone: /NotebookLM_Exports/ -> Instant local index
02 OFFLINE VAULT 100% Private

100% local database.

Your entire knowledge base stays on your disk in SQLite. No cloud subscriptions, no telemetry, and zero tracking. Review your complete library on flights, trains, or off-grid.

Storage: Local SQLite with FTS5 Full-Text Index
03 ACTIVE RECALL Cognitive Science

Turn audio into active recall.

Passive listening leads to rapid forgetting. Engram converts key insights into interactive flashcards and quiz questions linked directly to audio timestamps.

Recall Engine: Timestamped Anki-grade flashcards
04 RETENTION ENGINE Gamified Mastery

Lock in recall with streaks.

Engram calculates optimal review intervals using spaced repetition. Pair reviews with 25-minute Pomodoro timers, earn daily streak multipliers, and level up your mastery score.

Habit Loop: Spaced Repetition + Daily Streaks + XP
The Science of Retention

Defeat the forgetting curve.

Without review, 70% of new insights vanish in 48 hours. Adjust the slider to see how spaced repetition keeps your recall above 90%.

Time elapsed since studying: 7 days
Day 1 (Fresh) Day 7 (Critical Drop) Day 14 Day 30 (Long-term)

Passive Reading

Default Web App
19%

Without scheduled recall, neural pathways decay rapidly. You retain the general vibe, but forget key facts and technical arguments.

⚠ 81% of insights lost

Engram Spaced Review

3-Min Daily Sprint
94%

Engram interrupts decay at the exact mathematical threshold. Fast daily reviews convert fleeting thoughts into durable knowledge.

✓ Permanent recall + Streak XP
Audio Study Studio

Study audio offline.

NotebookLM’s deep-dive podcasts are great. Engram gives them a proper offline player with variable speed, chapter hopping, and timestamp clipping.

Deep_Dive_Ep04_Transformer_Attention.mp3

Exported from NotebookLM · 22:45 total · 100% Local

1

Pitch-Corrected Speed

Listen at up to 2.5× with zero voice distortion.

2

Timestamp to Flashcard

Clip any key argument into a spaced review card with one click.

3

Zero Cloud Streaming

Plays directly from your local SSD with zero buffering.

Habits & Analytics

Built for daily study habits.

Knowledge compounds when you show up daily. Engram combines habit streaks, Pomodoro timers, and level progression to keep you consistent.

🔥 14-Day Study Streak

+2.5× XP Boost

Maintain momentum with short 3-minute review runs. The heatmap logs every card reviewed and audio minute studied.

14 days active 420 minutes focused

⚡ Mastery Levels

LVL 08

Rank up to Cognitive Architect as your retention score crosses mastery milestones.

Cognitive Architect 2,450 / 3,000 XP
Next Unlock: Audio EQ Preset

⏱️ 25/5 Pomodoro

Focus Timer

Timer pauses audio at interval end and prompts an immediate 5-question recall test.

✓ Auto-logged to local SQLite

📊 Memory Curves

By Notebook

Track retention health per notebook. See exactly which topics are due for review.

96%
Biochem Notes
88%
System Design
64%
Macro Econ
Zero Cloud Lock-in

Your thoughts. Your files. Your SSD.

Cloud AI tools keep your notes locked in browser tabs. Engram gives you a local, private second brain on your machine.

🔒

Local SQLite with FTS5

Notebooks and flashcards are stored locally in standard SQLite with full-text search. Instant queries, zero server dependency.

✈️

100% Offline Freedom

No internet required once files are imported. Study audio and complete reviews on flights, commutes, or off-grid.

🚫

Zero Telemetry

No user tracking, no analytics pixels, and zero behavioral telemetry. Your learning data stays entirely on your device.

Direct Downloads

Download Engram.

Free and open source. Native desktop builds for macOS, Windows, and Linux.

macOS

Universal (.dmg)

Download .dmg

Windows

64-bit Installer (.exe)

Download .exe

Linux

AppImage & .deb

Download .AppImage
$ brew install engram
Clear Answers

Frequently asked questions.

Everything you need to know about offline ingestion, privacy architecture, and gamification loops.

In Google NotebookLM, export your briefing notes as Markdown/text documents and click download on your generated "Deep Dive" Audio Overview (.mp3 or .wav). Drop those files into Engram or point the app at your downloads folder. Engram parses the transcript, builds the offline audio waveforms, and structures your active recall cards automatically.
No. Engram is designed from the ground up as an offline-first desktop application. Audio playback, flashcard reviews, Pomodoro tracking, and memory curves all run entirely on your local machine using SQLite.
Zero bytes leave your computer. Engram has no remote analytics, no telemetry tracking, and no external AI API dependency once your files are in the local database.
Yes, Engram is 100% free and released under the MIT Open Source License. You can inspect the source code, compile native binaries yourself, or contribute features on GitHub.
Yes! Engram stores data in clean standard formats. You can export any notebook as standard Markdown notes or Anki-compatible `.apkg` flashcard decks with one click.