This app acts as a secure bridge for AI coding agents, allowing you to run and continue sessions from your computer on your phone. It supports collaboration, reliable session resuming, and full history access with end-to-end encryption.
0.1.2
April 5, 2026
This release is a major upgrade to self-hosting and cross-device workflows (plaintext mode, keyless auth, mTLS, "Add Phone" pairing, and safer canonical URLs), plus a big step forward in in-app development features (panes, files/source control, diffs, replay/forking, and OpenCode deeper integration). It also improves reliability across web/desktop/mobile with better crash recovery, diagnostics, notifications controls, and more resilient daemon connectivity. - Refactored the Files and Source Control UI to support richer session file workflows (changed-files review, repository tree, commit controls, files editing, and safer SCM operations like discard/stage). - Added directory filtering and viewability tuning helpers for SCM review surfaces. - Improved SCM reliability with adaptive polling, mutation invalidation, and better fallbacks when session/workspace paths are missing or a session is inactive. - Improved diff caching and prefetch behavior so loaded diffs are retained more reliably while scrolling and expanding rows. - Added a new pane-based UI architecture (details/right panes) with lazy loading, prefetching, and route integration for smoother navigation. - Added multi-pane appearance preferences and improved details tab open/pin behavior. - Added a resizable permanent sidebar drawer with persisted width preferences. - Improved connection status UI to show the active server label more clearly. - Refactored the code diff/rendering stack (Pierre web diff viewer, worker runtime/warmup, virtualization controls, unified folding, and improved syntax/language handling). - Improved markdown rendering for developer workflows with diff-aware code fences and better table scrolling. - Fixed a security issue by preventing Mermaid WebView HTML injection. - Improved transcript UX with tool-call grouping controls and timeline improvements. - Added compact/collapsible tool card behaviors and richer tool header/status handling (including clearer permission states). - Added support for freeform “Ask a question” prompts in tool renderers. - Improved list performance and stability by expanding FlashList usage, with a web fallback to FlatList on known FlashList layout crash signatures. - Added session fork actions in the UI (from header/info/actions). - Added “fork from message” semantics so forks happen at the expected point in the conversation. - Added Happier Replay forking support across providers, including replay-seed propagation for continue/fork workflows. - Added replay seed sizing limits to prevent oversized prompts and improve reliability. - Improved replay synopsis retrieval with synopsis pointers and bounded fallback scanning for faster recovery. - Added replay summary runner configuration support (backend/model), and ensured fork/continue flows forward summary runner settings when needed. - Implemented major OpenCode runtime/server integration (managed server orchestration, session control, question/prompt handling, and forking support). - Improved OpenCode runtime stability with readiness/health polling, safer shutdown cleanup, and better fallbacks when idle streaming is missing. - Added support for session pinning - Added support for session tags - Improved permissions display UI - Improved permissions notifications & user actions notifications - Added plaintext storage mode support for self-hosted servers (so sessions can be stored plaintext-at-rest when configured). - Added keyless external authentication support for self-hosted and enterprise auth providers. - Added mTLS login support for environments that require certificate-based authentication. - Added an “Add your phone” pairing flow, including QR-based pairing from web/desktop and in-app pairing helpers. - Added QR restore flows so reconnecting a device is smoother when migrating or recovering access. And many more! Full changelog on GitHub
MoreThank you for the review! We have multiple releases channels and the app version does not always equal the CLI version, which is why they can be different. Version 0.2.6 will be out soon, looking forward to your feedback!
Thank you very much for your review! Deeply appreciate it :)
No, Happier is ad-free. It is a free and open-source application, meaning it does not display advertisements to users.
Happier supports a broad range of providers including Claude Code, Codex, Gemini, and OpenCode. You can configure these providers in the app, and it also supports using existing subscriptions or API keys.
Happier uses end-to-end encryption, the same technology as Signal, ensuring zero-knowledge. Your code is encrypted on your machine before transmission, and your encryption keys never leave your devices.
While the app acts as a bridge to AI coding agents that require an internet connection, the ability to resume persistent sessions and access history means you can continue working on your code context even with intermittent connectivity.
The latest version, 0.1.2, was released on April 5, 2026. As an open-source project, updates are driven by community contributions and developer iteration.
Happier is available on iOS devices, including iPhone and iPad. It requires the Happier CLI to be installed on your computer (Mac, Linux, or PC).
Happier has an age rating of 4+. This indicates it is suitable for a wide audience, with no content restrictions.
Happier differentiates itself through its open-source nature, strong focus on end-to-end encryption, and seamless mobile-to-desktop session continuity. It aims for faster iteration and greater reliability compared to some other tools.