PROJECT STORY
AcrossNow
A cross-platform clipboard tool in development; support and validation for text, images, and files vary by platform and version.
- Role
- Independently developed with AI agent assistance
- Platforms
- macOS / Android / iOS / iPadOS
- Core technology
- Flutter · Dart · Supabase · Cloudflare
Under development. Public downloads are not available yet.
AcrossNowA conceptual illustration of cross-device sync, not a product screenshot.
Continuing work across devices
Working across a phone and computer often means moving text, links, and files between them. AcrossNow lets authorized devices on the same account send and receive clipboard content, using the system clipboard to connect with the normal paste workflow.
Development scope
The project combines a Flutter interface, native clipboard and secure-storage integrations, cloud device management, and real-time transport. Supabase and Cloudflare provide cloud identity, data, execution, and real-time capabilities.
Key decision: shared rules with explicit platform boundaries
Mobile and desktop platforms differ in background execution, notifications, clipboard access, and data protection. Shared logic handles transmission eligibility and content rules, while platform adapters provide native capabilities without coupling the interface to an operating system or cloud provider.
Content is processed, encrypted, and signed before transmission. Receiving devices validate and decrypt it, then write to the clipboard within platform constraints. The design distinguishes temporary offline states, session recovery, device binding, and actual invalidation so each failure can be handled correctly.
Ongoing development and validation boundaries
Primary development covers macOS, Android, and iOS/iPadOS. Windows development and validation remain in progress. Background reception, pasting, and third-party compatibility have platform- and version-specific conditions; this case study does not claim every platform or background scenario has passed acceptance testing.