A read-later and retention system from Readwise. Unifies articles, newsletters, PDFs, ebooks, YouTube, Twitter threads, and podcast audio into one inbox. Ghostreader AI handles document Q&A, summaries, and custom prompts. The Readwise highlight review system resurfaces every highlight on a spaced-repetition schedule.
$9.99/mo annual bundles Reader plus the full Readwise system; Lite drops to $5.59/mo annual ($12.99 monthly) for the reading inbox alone. No perpetual free tier after the 30-day trial.
System Verdict
Pick Readwise Reader if retention is the goal. No competing tool bundles multi-format ingestion, document-level AI, and daily spaced-repetition review at this price. Highlights do not stay dormant: they cycle through quizzes, cloze deletions, and rating-based scheduling that force recall.
Skip it for casual reading or team workflows. Pocket and Matter handle light save-for-later at lower cost. Readwise has no team libraries or shared highlights. Everything is personal.
Who pays which tier: Reader + Readwise at $9.99/mo annual for heavy readers and knowledge-base builders, Lite at $5.59/mo annual (or $12.99 monthly) for users who only want the reading inbox without spaced-repetition review.
Key Facts
| Ingestion sources | Web articles, newsletters (forwarded), PDFs, Kindle ebooks, YouTube, Twitter threads, podcast audio |
| Ghostreader AI | Document Q&A, summaries, custom prompts, term definitions, plain-language rewrites |
| AI backend | Frontier LLMs with auto-routing per query |
| Spaced repetition | Daily review, quizzes, cloze deletions, rating-based scheduling |
| Export integrations | Obsidian, Notion, Logseq, Evernote, Readwise API |
| Text-to-speech | Up to 5x speed with highlight sync |
| Platforms | Web, iOS, Android, browser extension |
| Offline | Full on mobile and web |
| Free tier | 30-day trial only, no perpetual free |
| Price floor | $5.59/mo annual (Lite); $12.99/mo monthly |
Every data point was verified against vendor docs on 2026-05-13. See Sources.
What it actually is
Three tools fused into one subscription: a read-later inbox, a document-level AI assistant, and a spaced-repetition retention system.
Ingestion covers nearly every format readers actually encounter. Newsletters forward to a personal @readwise.io address. Kindle highlights sync automatically. PDFs upload directly. YouTube transcripts become highlightable text. Podcast audio enters the same inbox.
Ghostreader works inside the reader. Highlight a passage for summary, definition, or plain-language rewrite. Chat with a full PDF. Build custom prompts for recurring patterns (extract quotes, generate study questions).
The Readwise review layer is the retention engine. Highlights resurface daily with multiple-choice quizzes, cloze deletions, and spaced scheduling that adapts to self-rated recall. Exports sync bidirectionally into Obsidian, Notion, Logseq, and Evernote.
When to pick Readwise Reader
- You read 10+ articles, PDFs, or chapters weekly. The unified inbox is the moat. Pocket plus Kindle plus Anki costs more in friction than the $9.99/mo annual bundle.
- You build a knowledge base in Obsidian or Notion. Official plugins and a full API keep highlights flowing in both directions.
- Retention is the point, not just saving. Spaced repetition turns passive highlighting into active recall. Memory research says this works.
- You listen as much as you read. Text-to-speech at 5x with synced highlighting covers commutes and workouts.
- Kindle is in the reading stack. Sync is the most reliable highlight pipeline out of Amazon’s ecosystem.
When to pick something else
- Casual save-for-later: Pocket (free) or Matter. Readwise is over-engineered for light use.
- Source-grounded research Q&A: NotebookLM. Free, citation-precise for uploaded PDFs.
- Team reading libraries: no good fit. Readwise is individual-only.
- Local-first vault: Obsidian without Readwise. More work, full ownership.
- Networked notes with E2EE: Reflect. Privacy-first, cheaper at $10/mo.
Pricing
| Plan | Price | Notes |
|---|---|---|
| Free trial | 30 days | Full access to all features |
| Lite | $5.59/mo annual ($12.99 monthly) | Reading inbox and daily email, no spaced repetition |
| Reader + Readwise (Full) | $9.99/mo annual | Everything: Ghostreader AI, spaced repetition, all exports |
Prices verified 2026-05-13 via readwise.io/pricing. Annual billing saves roughly 24% versus monthly. No perpetual free tier after the 30-day trial.
Against the alternatives
| Readwise Reader | NotebookLM | Matter | ||
|---|---|---|---|---|
| Price | $5.59-$9.99/mo annual | Free / $4.99 | Free | Free / $7.99 |
| Ingestion breadth | Widest (articles, newsletters, PDFs, ebooks, YouTube, Twitter) | Articles only | Uploads only | Articles, newsletters |
| AI Q&A | Ghostreader, full docs | None | Gemini 3.1, cited | Limited |
| Spaced repetition | Native | None | None | None |
| Export to PKM tools | Full (Obsidian, Notion, Logseq, API) | Limited | None | Limited |
| Team libraries | None | None | Public sharing | None |
| Best viewed as | Retention system | Save-for-later | Research Q&A | Newsletter reader |
Failure modes
- No perpetual free tier. After the 30-day trial, $5.59/mo Lite or $9.99/mo Full is required (annual rates). Casual readers bounce here.
- Ghostreader AI consumes credits. Heavy document Q&A can hit caps before the monthly reset.
- Kindle sync requires periodic re-auth. Amazon’s API forces occasional re-authorization that can interrupt the highlight pipeline.
- No team workspaces or shared libraries. Individual-only by design.
- No built-in ebook store. Kindle, Apple Books, or direct uploads handle acquisition.
- Mobile lacks some web-exclusive AI previews. Feature parity is close but not complete.
- Cloud-only processing. Highlights and AI queries flow through Readwise servers. Not a fit for regulated or legally sensitive documents.
- Spaced-repetition review is a daily habit or nothing. Skipping reviews breaks the recall benefit. Users who do not commit to the daily cycle overpay for Lite features.
Methodology
This page was produced by the aipedia.wiki editorial pipeline, an automated system that ingests vendor documentation, verifies pricing and model details against primary sources, and generates the editorial analysis. No individual human wrote this review. Scoring follows the four-dimension rubric at /about/scoring/ (Utility × Value × Moat × Longevity, unweighted average). Last verified 2026-05-13 against readwise.io/pricing, readwise.io/read, and the Ghostreader docs.
FAQ
Does Readwise Reader have a free tier? No perpetual free tier. A 30-day full-featured trial is available. After that, Lite is $5.59/mo annual ($12.99 monthly) or the full Reader + Readwise bundle is $9.99/mo annual.
What AI powers Ghostreader? Frontier LLMs with automatic routing per query (Ghostreader docs). Capabilities include document Q&A, term definitions, plain-language rewrites, summaries, and custom prompts.
Can Readwise integrate with Obsidian? Yes. The official Obsidian plugin creates daily highlight notes in the vault with bidirectional sync. Notion, Logseq, and Evernote integrations ship through official plugins or the Readwise API.
What formats does Reader ingest? Web articles, email newsletters (via a personal @readwise.io forwarding address), PDFs, Kindle ebooks, YouTube videos (with transcript highlighting), Twitter threads, and podcast audio.
Is spaced repetition worth it? For active knowledge-base builders, yes. Passive highlighting rarely survives past a month. Spaced repetition converts highlights into recalled knowledge through short daily reviews. For casual readers, Lite without review is the cheaper fit.
Sources
- readwise.io/pricing: current Lite and full bundle pricing
- readwise.io/read: Reader product overview and ingestion list
- Ghostreader docs: AI assistant feature scope
Related
- Category: AI Notes
- Comparisons: Capacities vs Readwise · NotebookLM vs Readwise · Obsidian vs Readwise · Fireflies vs Readwise · Otter.ai vs Readwise
