Kobo can run apps now

Original Article ↗ Hacker News Discussion ↗

A new project called Cobalt turns certain Kobo e-readers into general-purpose app platforms, enabling users to install tools like terminals, OPDS clients, and AI assistants directly on an e-ink device. Enthusiasts welcome the openness, hackability, and ability to integrate with services like Calibre or custom readers, contrasting it favorably with Amazon’s more locked-down Kindle ecosystem. Others worry that app ecosystems, feature creep, and even LLM-generated marketing copy undermine the appeal of e-readers as simple, distraction-free devices and raise questions about long-term maintainability.

Overall reaction

  • Many commenters find the project impressive and exciting, especially for turning a Kobo into a more general-purpose e‑ink computer.
  • Others say they like their e-readers precisely because they are single-purpose, distraction-free devices and would not use such a platform.

Existing ecosystem & alternatives

  • Several people point out that Kobos have long supported modification:
    • NickelMenu and NickelHook integrate apps or hooks into Kobo’s stock UI.
    • KOReader and Plato are widely praised as far superior readers to stock firmware, with plugins and OPDS support.
    • Some Kobos can run postmarketOS or custom UIs, effectively becoming small Linux tablets.
  • Some say the new platform should more clearly differentiate itself from NickelMenu/KOReader, which already enable “apps.”

Single-purpose vs multitool debate

  • One camp wants e-readers to “just read books,” seeing apps as distraction, feature bloat, or turning the device into a “worse phone.”
  • The other camp values openness and hackability: the e-ink screen, battery life, and form factor make Kobos appealing as low-distraction thin clients, remotes, or terminals.
  • Some note you can simply choose not to install or launch extra apps; capability doesn’t require usage.

Hardware, models & performance

  • Discussion of model differences: Clara BW vs Clara Colour, Libra, Sage, Elipsa, etc.
  • Trade-offs:
    • Color e-ink: good for comics and illustrations but noticeably worse contrast and often requires higher frontlight.
    • BW screens: crisper, better contrast for text.
    • CPU cores: dual/quad-core models are preferred for heavier mods and background tasks; single-core devices can freeze or lag with Wi‑Fi/Bluetooth.
  • Caution about waterproof models being harder to open and recover, and about potential bricking when modding.

LLM / “vibecoded” concerns

  • Several commenters detect LLM-written marketing copy and possibly code, finding the style off-putting or “sloppy.”
  • Some worry that AI-generated projects may be harder to maintain or less trustworthy long-term; others argue it’s open source so it can be forked if needed.

Desired apps & uses

  • Ideas include: better highlight/quote review, OPDS/Libby clients, manga readers with direct source integration, Anki-like flashcards, TV/media remotes, terminals, and low-distraction note/knowledge viewers.