Kobo introduces paid cloud synchronization service for personal e-books
Kobo is launching a subscription-based service called Stack, allowing users to sync personal documents and reading progress across multiple devices.

Kobo has unveiled a new subscription service, Stack, which enables users to upload personal e-books and documents to its servers for cross-device synchronization. The service maintains consistent reading progress, highlights, and annotations across the company’s range of apps and hardware.
Unlike Amazon’s Kindle service, which offers similar cloud-based document hosting at no additional cost, Kobo has opted for a paid monthly model for this feature. The rollout coincides with the release of the 6.0 software update, currently accessible as a beta version for existing users before a broader rollout.
The service aims to provide a centralized library experience for users who possess e-books purchased outside of the Kobo store. The transition to a subscription-based cloud model highlights a shift in how e-reader manufacturers are attempting to monetize document management services.