Kios: An iOS Reader for Self-Hosted Kobo/Calibre Libraries with Progress Sync
Kios is a new iOS reader that connects to self-hosted Kobo/Calibre libraries (like Grimmory or Calibre-Web) and syncs reading progress using the Kobo protocol. It also supports OPDS 1.2 and 2.0 with progress sync, plus kosync (the open-source sync protocol for Kobo devices).
Key Features
- Direct connection to self-hosted Kobo servers (Grimmory, Calibre-Web)
- Reading progress sync via the Kobo protocol
- OPDS 1.2 and 2.0 catalog support with progress sync
- kosync integration
- Built entirely with Claude Code (Opus 4.8 with 1M-token context window) by a first-time iOS developer
Kios is currently available via TestFlight: join the beta.
Behind the Build
The developer, an experienced software engineer but an iOS novice, used Claude Code extensively. They even had Claude write a "book" about iOS development to understand and review the generated code rather than blindly accept it. The toolkit included Claude Code with Opus 4.8's 1M-token window, plus the Superpowers skills and Matt Pocock's architecture skill to maintain code quality as the project grew.
If you self-host your ebooks and switch between a Kobo and an iPhone, Kios bridges that gap. The developer is actively seeking feedback on both functionality and UX.
📖 Read the full source: r/ClaudeAI
👀 See Also
VibeAround: Local Daemon Connects Coding Agents to Telegram and Discord
VibeAround is a local daemon that connects coding agents like Claude Code, Gemini CLI, and Codex to IM platforms including Telegram and Discord. The tool features session handover with pickup codes to continue conversations across devices.
Benchmark Results: 6 Low-Cost Models vs. Claude Sonnet 4.6 for OpenClaw Orchestration
A developer tested six cheaper AI models against Claude Sonnet 4.6 as the main orchestrator for an OpenClaw setup. Only o4-mini matched Sonnet's perfect score, while others failed on critical judgment tasks like file inspection and delegation.
Claude Code Studio: Open-Source Desktop App for Managing Multiple Claude Coding Sessions
Claude Code Studio v0.9.3 is an open-source desktop application that provides a multi-pane interface for managing multiple Claude Code CLI sessions. It addresses common workflow issues like juggling terminal tabs, session persistence, and instruction repetition.
Socratic Prompt Generator Built as React Artifact Inside Claude
A developer built a Socratic prompt generator as a React artifact that runs inside Claude, featuring auto-detection of input complexity and three-tier prompt generation with failure mode analysis.