# Build Your Own Readwise Alternative - Tool: Build Your Own SaaS Alternative - Difficulty: Intermediate - Last updated: May 2026 ## TL;DR Readwise is the most expensive read-later app at $119.88/yr with no free tier. The Lite plan at $5.59/mo doesn't include Reader, confusing new users. Karakeep (25.2k stars, AGPL-3.0) with AI tagging replicates the core experience for under $5/mo in hosting — and with Pocket shut down and Omnivore dead, self-hosting is now the only reliable long-term path. ## Frequently asked questions ### What is the main difference between Readwise Lite and Readwise Full? Readwise Lite at $5.59/mo includes only the daily highlight resurfacing (spaced repetition review of past highlights). It does not include Readwise Reader — the full read-later, RSS, and annotation tool. Readwise Full at $9.99/mo annual includes both. This distinction is frequently missed by new users discovering the lower price. ### Is Karakeep a true Readwise replacement? Karakeep covers the read-later and AI tagging parts of Readwise well — it saves articles, organizes bookmarks, supports full-text search, and auto-tags using AI. What it does not include is spaced repetition daily review of past highlights, which is Readwise's core differentiation. If daily highlight resurfacing is your primary use case, you would need to build that layer on top of Karakeep. ### What happened to Omnivore? Omnivore shut down its hosted service on November 15, 2024 after ElevenLabs acquihired the team. The codebase remains available on GitHub under AGPL-3.0 license and can still be self-hosted. Community forks have kept the codebase active, though it requires more technical setup than Karakeep or Wallabag. ### How complex is the spaced repetition algorithm to build? The SM-2 algorithm — the most commonly used spaced repetition formula — is well-documented and can be implemented in under 100 lines of code. The harder part is the UX of the daily review queue and tracking the interval and ease factor per highlight over time. The FSRS algorithm (a modern SM-2 replacement) is also open source and available as a library in multiple languages. ### Can I use Wallabag to send articles to my Kindle? Yes. Wallabag supports Kindle send via the Amazon Send to Kindle email feature. You configure your Kindle email address in Wallabag settings, and articles are converted to EPUB or MOBI format and sent to your Kindle. Instapaper also supports this as a Premium feature, and Karakeep has basic export capabilities. ### What does it cost to self-host a Karakeep-style read-later tool? A Karakeep instance on a small VPS (DigitalOcean, Hetzner, or similar) costs $4–6/mo for hosting. The software is free under AGPL-3.0. Add AI tagging using OpenAI at minimal cost for personal use — typically under $1/mo for light usage. Total: under $10/mo for a full-featured read-later setup you own completely. ### Can RapidDev help build a custom read-later tool? Yes. RapidDev can help scope and build a custom read-later or knowledge management tool — whether that means customizing Karakeep, building on top of Wallabag, or developing a fully custom system with spaced repetition, AI summarization, and PKM integrations. The $40K–$100K build range covers most production-ready implementations. ### How is data exported if I cancel Readwise? Readwise provides a data export option that downloads all highlights, notes, and article metadata as CSV and JSON files. Highlights are also available per-source (Kindle, manual, Reader). The export is comprehensive enough to import into Karakeep or a custom database, though rebuilding the spaced repetition review history requires manual work. --- Source: https://www.rapidevelopers.com/clone/readwise © RapidDev — https://www.rapidevelopers.com/clone/readwise