Here's how Inoreader and Instapaper compare across the features people actually look for. They share 12 core capabilities; the differences show up in what each tool focuses on.
Feature
Inoreader
Instapaper
Keep
Capture and save
Browser extension
Chrome, Firefox, Safari, Edge
Chrome, Firefox, Edge, Brave
Mobile apps
iOS, Android
iOS, Android
Save from email
Unique save-by-email address
Forward to in.keep.md
Save tweets
Save YouTube videos
Via channel feed
URL only
With transcripts
Save GitHub stars
Save PDFs
Premium
Converted to markdown
Save files (docs, spreadsheets)
Word, Excel, CSV, HTML, OpenDocument
Save audio files
With Whisper transcription
Save via API
Auto-sync sources
RSS auto-sync
YouTube channel sync
X bookmarks sync
Auto-sync on paid plans; manual import from extension export on free
GitHub stars sync
Newsletter inbox sync
Pro
Forward-to-save, not a dedicated inbox
Library and reading
Reader view
Offline reading
Partial
Full-text search
Supporter+
Premium
Semantic / AI search
Pro (AI Q&A via Inoreader Intelligence)
Highlights
Highlight from the extension or from inside the reader, with optional notes; renders inline
Notes
Tags
Collections
Folders
Folders
Public sharing
Partial
Full-text RSS extraction
Pro
AI and agents
Markdown export for AI agents
Per-item .md URL
Bulk markdown export
MCP server
CLI tool
keep-markdown npm package
Claude Code skill
AI summaries
Pro (Inoreader Intelligence)
AI summary and AI tagging on every saved article
Public API
Import and export
OPML import / export
Import from and export to any OPML-compatible reader
Pocket import
ZIP, CSV, and legacy HTML exports
Instapaper import
CSV export with folders, archive, and starred state
CSV / JSON export
HTML + CSV
Export to CSV or JSON. Import plain CSV/TSV plus Omnivore, Raindrop.io, Pinboard, and Wallabag export files.
Send to Kindle
Pro
Premium
EPUB delivered to your Kindle email
Import Kindle highlights
From My Clippings.txt, no Amazon login required
Pricing
Inoreader is free, paid from $4.99/mo and Instapaper is free, paid from $5.99/mo. The tier that fits best usually comes down to how many items you save each month.
Keyword and brand monitoring across all subscribed feeds
Where it falls short
UI is dense, with a steep learning curve for casual readers
The best power-user features require Pro
No structured markdown export for LLM or agent workflows
Not designed for long-form read-later use cases
What Instapaper does well
One of the cleanest text extractions in the category
Long track record and stable apps
Email-in works out of the box for forwarding articles and newsletters
Tags now work across web, mobile, and extensions
Kindle delivery for long-form reading
Where it falls short
No RSS subscription workflow
Most of the useful features (search, PDFs, Kindle send) require Premium
No structured markdown export for AI or LLM tooling
No public API for semantic or AI features
About Inoreader
Inoreader is an RSS reader built for people who subscribe to a lot of feeds and want tight control over what they actually read. It supports RSS, Atom, JSON Feed, newsletter-to-RSS, and has keyword-level filtering, rules, and automations across every feed you follow.
The product skews toward researchers, journalists, OSINT analysts, and anyone who treats feed reading as a daily workflow rather than background entertainment.
About Instapaper
Instapaper is one of the original read-later apps, still going strong after Betaworks took it back from Pinterest in 2020. The product has always been sharp on one thing: save a web page, read it later in a clean typographic view. Free tier gets you unlimited saves, folders, tags, sync across iOS/Android/web, and a public API. Premium at $5.99/mo or $59.99/yr layers on full-text search, permanent archive, PDF reader, Kindle send, AI voices, and speed reading.
Most of the product has shipped in a long tail of small updates rather than big reinventions. The recent wave added tags across every platform, highlights on the open web via the browser extensions, and send-to-Kindle right from the extension.