# Retention: Book Key Points

> Capture book notes, turn them into flashcards, and remember more.

Canonical page: [https://chrome-stats.com/d/com.alexchar.retention](https://chrome-stats.com/d/com.alexchar.retention)

## Overview

- **ID:** `com.alexchar.retention`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Retention
- **Category:** EDUCATION
- **Downloads:** 2,191
- **Version:** 2.8.0
- **Last updated:** 2026-09-01
- **First published:** 2025-02-03
- **Publisher country:** GR
- **Size:** 24 MB
- **Data as of:** 2026-09-16
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.alexchar.retention)
- **Privacy policy:** [https://alexandroscharantzidis.com/retention-privacy-policy/](https://alexandroscharantzidis.com/retention-privacy-policy/)

## Description

Remember more from every book you read.<br><br>Read a nonfiction book and save the parts that matter. Retention resurfaces them later to refresh your memory and spark new thinking, so the books you finish keep working long after you close them.<br><br>Capture key ideas, quotes, and highlights, turn them into flashcards, and review them with spaced repetition. Whether you read books or listen to audiobooks, Retention gives you one focused place to keep your book notes and revisit them before they fade.<br><br>KEY FEATURES<br><br>📷 Book Scanner (OCR) <br>Reading a physical book? Snap a photo with our smart scanner, extract the text, and save it as a digital note in seconds. <br><br>🎙️ Voice-to-Text <br>Speak your thoughts naturally. Retention transcribes your voice, making it the perfect companion for audiobooks and on-the-go reading.<br><br>⚡ AI Book Summaries &amp; Key Points <br>Short on time? Generate clear, concise book summaries and key ideas from any book in seconds.<br><br>🗂️ Flashcards + Spaced Repetition <br>Saving highlights is easy. Remembering them is the hard part. Retention turns your notes into memory with short daily reviews.<br><br>Spaced Repetition: Our algorithm picks the right moment to resurface each idea, defeating the &quot;forgetting curve&quot; for good.<br><br>❤️ WHY RETENTION WORKS<br><br>Your Reading Companion: Save the parts that matter and let Retention bring them back when you need them.<br>Save Time: Get high-impact book insights and summaries in seconds.<br>Better Memory: Evidence-based learning techniques that make ideas stick.<br>A Daily Habit: Keep your streak alive with micro-learning sessions.<br>Zero Friction: Clean, distraction-free, and completely ad-free.<br><br>🚀 PERFECT FOR<br><br>Nonfiction readers who want to remember more from every book<br>Professionals learning from business, leadership, and career books<br>Audiobook listeners capturing key takeaways and quotes<br>Lifelong learners building a personal library of ideas<br><br>You don&#39;t need more reading time. You need better retention.<br><br>Download Retention today and start remembering what you read.

## Rankings

- #927,793 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.CAMERA`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.RECORD_AUDIO`
- `android.permission.USE_BIOMETRIC`
- `android.permission.USE_FINGERPRINT`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.alexchar.retention.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`

## Similar extensions and apps

- [Retent](https://chrome-stats.com/d/com.kristiyan.retent) — 19 users
- [Book To Brain](https://chrome-stats.com/d/com.book_to_brain.android) — 119 users
- [BookRecall](https://chrome-stats.com/d/app.bookrecall.mobile) — 27 users
- [Books and Notes](https://chrome-stats.com/d/com.bookandnotedev.bookandnotes) — 172 users
- [RECOLLECTX](https://chrome-stats.com/d/app.lovable.totalrecallx) — 3 users
- [Recall](https://chrome-stats.com/d/com.recallapp.edu.sarvesh) — 41 users
- [Retain Cards: AI Flashcards](https://chrome-stats.com/d/cards.retain.app.production) — 265,503 users, 4.35 / 5
- [Recall: Read & Remember](https://chrome-stats.com/d/com.bumpkinlabs.recall) — 148 users
- [LearnKeep: AI Flashcards Study](https://chrome-stats.com/d/learnkeep.com) — 21 users
- [Bookxie: Read & Remember](https://chrome-stats.com/d/com.bookxie.app) — 413 users
- [Repeatica - AI Study Notes](https://chrome-stats.com/d/com.repeatica.app) — 161 users
- [StudyBoostR - Exam Prepper](https://chrome-stats.com/d/com.heldandbell.studyboostr) — 12 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/com.alexchar.retention)