CHANGELOG

Always building,always improving

Every important App0 change: new capabilities, experience improvements and fixes.

Current versionv2.3.0August 26, 2026Latest
14public releases
31new features
16improvements
7fixes
v2.3.0Latest release

Enterprise deployment, desktop client preview and flexible short-term passes

A new enterprise page covers compliance and private deployment, the desktop client page opens for early preview, short-term passes lower the trial threshold, and tier names follow the interface language.

New

Enterprise deployment page

Learn about enterprise solutions across security compliance, internal-network isolation and private deployment, with a clear delivery scope and engagement process.

New

Desktop client download page

A preview page for the Windows and macOS desktop clients is now live. Members will be able to download installers here once the clients launch.

New

Short-term passes

New 1-day, 3-day and 7-day passes let you experience full build capabilities without a monthly commitment.

Improved

Localized tier names

Tier names now follow the interface language instead of always displaying in English.

Improved

Showcase detail improvements

Individual showcase app detail pages are more complete and the browsing experience is smoother.

v2.2.0

Official app showcase and uninterrupted AI conversations

Explore complete apps built with App0, while busy models automatically continue the current task instead of stopping the conversation.

New

Official app showcase

Browse complete applications built with App0, try the live result, understand the main features and inspect the full build journey.

New

Downloadable source releases

Download the complete source of showcase apps and use proven examples as a starting point for your own product.

Improved

Automatic continuation when models are busy

When the selected model is temporarily at capacity, the current conversation continues in the background instead of stopping on a capacity notice.

Improved

More reliable large-project builds

Projects with many files or long-running work now stay in progress more reliably through delivery.

Fixed

Clearer publishing feedback

When an app is not ready for the showcase, the console explains the next step instead of leaving a click without feedback.

v2.1.1

Claude 5 builds with clearer live feedback

Choose GPT-5.6 or Claude 5 in the builder, with clean phase-based progress, complete handoffs and more reliable recovery after interrupted streams.

New

Claude 5 model choice

Choose Claude Opus 5, Claude Fable 5, GPT-5.6 Sol or GPT-5.6 Terra when creating an app or continuing a conversation, with an independent reasoning-effort setting.

Improved

Clear Claude live progress

Intermediate Claude narration no longer piles up as chat replies. One live status moves through analysis, research, editing, execution and verification before a single final handoff appears.

Improved

More complete completion reports

Claude now explains what changed, how to use it, which checks actually ran and whether anything remains instead of returning a one-line acknowledgement.

Fixed

Stream and task recovery

An interrupted upstream stream no longer crashes the API. Recovered jobs clean up orphaned model processes and automatically handle active-writer thread conflicts.

New

Isolated HTTPS preview domains

Every app opens on its own app0.click subdomain, avoiding iframe conflicts while keeping generated apps isolated from the App0 control surface.

v2.0.2

Reliable recovery and administrator collaboration

Tasks now recover through transient disconnects, and administrators can send follow-up requests to any app.

New

Send messages to any app

Administrators can open any app in the console and send follow-up requests using its existing conversation, workspace and task queue.

Improved

Automatic recovery after disconnects

Transient model-stream and network interruptions now get a longer retry window so work continues instead of stopping at a reconnect notice.

Fixed

Internal reconnect errors stay internal

Reconnect diagnostics are no longer saved as assistant messages or allowed to replace the real task error.

v1.9.1

Higher-quality templates and clearer builder chrome

The template library now covers realistic consumer and business scenarios, and the builder shows the current release and publication date at a glance.

New

Modern consumer app templates

New briefs cover current consumer products including an AI study coach, creator link hub, local resale market, family organizer, smart meal planner, trip copilot and private wellness journal.

Improved

Industry-specific business briefs

Healthcare, banking, insurance, manufacturing, logistics, retail, government, security and SaaS templates now use their own domain objects, roles, journeys, controls and metrics instead of repeating a renamed CRUD shell.

New

Release details in the builder

The builder header now shows App0, the latest version and a locale-formatted publication date. The version opens its matching changelog entry in a new window.

Improved

Automated template quality checks

Tests now enforce unique, substantive briefs, representative consumer and business coverage, and industry-specific vocabulary to prevent mechanical template regressions.

v1.8.2

Support tickets and faster previews

Support tickets moved into the account center, preview rebuilds became dramatically faster, and version restore feedback is more reliable.

New

Support ticket center

Open tickets from the account center, attach screenshots and files, follow replies and rate the outcome.

Improved

Much faster preview rebuilds

The build cache is no longer discarded by periodic cleanup, so rebuilding unchanged content dropped from roughly 70 seconds to under one.

Fixed

Version restore status

A failed restore no longer leaves the button stuck on restoring, and only the version you clicked shows progress.

v1.7.0Major release

Container sandbox and workspace version history

Every AI turn now runs inside a disposable container, and the workspace records a version for each turn so any build can be rolled back.

New

Disposable container sandbox

Each turn runs in its own container with only the current app's workspace mounted, so no other app's code is visible.

New

Workspace version history

Every turn is committed automatically and can be restored at any time; restoring only appends a new version, so mistakes stay reversible.

New

Databases inside the sandbox

The sandbox ships with PostgreSQL 18 and MySQL 9.7, so generation can really create tables, run queries and verify transactions instead of only checking syntax.

Improved

Mutual TLS inside the cluster

The control plane and preview nodes now talk over mTLS and require a client certificate to join.

v1.6.0Major release

Multiple conversations and complete history

Apps can now contain multiple independent conversations, with every message and execution result stored persistently.

New

Multiple conversations per app

Create, switch, rename and delete conversations so separate lines of work can progress independently.

New

Complete conversation persistence

User input, AI replies, failures and stopped results are stored in PostgreSQL and associated with their conversation.

Improved

Conversation sidebar

Apps and conversations appear in a tree, making recent status and past turns easier to find.

Fixed

Conversation ownership checks

Every message verifies that its conversation belongs to the current app, preventing orphaned or misdirected records.

v1.5.0

Flagship builds with ChatGPT-5.6 Sol

An upgraded default model and reasoning controls provide more reliable planning, coding and verification for complex full-stack work.

New

Flagship model

ChatGPT-5.6 Sol now powers code generation and complex engineering execution.

New

Reasoning effort control

Choose reasoning effort by task complexity and retain the choice for later turns.

Improved

Visible model information

Marketing and builder pages clearly identify the model currently in use.

v1.4.0

Distributed preview cluster

Preview builds and runtimes are separated from the control service, with multi-node scheduling, version management and persistent containers.

New

Preview node scheduling

The control plane assigns preview builds according to node health and load.

New

Versioned deployments

Each build creates a distinct preview version with its status, image and logs.

Improved

Preview gateway

A shared domain routes traffic to the correct container without exposing node ports.

Fixed

Lease recovery

Offline nodes and expired leases are requeued automatically so tasks do not remain stuck.

v1.3.0

Account center and usage records

A complete account center and transactional usage records make profile and application activity clear.

New

Account center

View and update your profile and password, and review app and conversation usage in one place.

Improved

Transactional usage

App and conversation usage is calculated directly from PostgreSQL records for accurate concurrent updates.

v1.2.0

PostgreSQL and operations console

Core data moved to PostgreSQL, alongside a new administration console and access and authentication audits.

New

PostgreSQL data layer

Users, tasks, sessions, events, usage and previews are managed in PostgreSQL.

New

Administration console

Review users, apps, cluster state, access records and authentication events in one place.

New

Idempotent SQLite migration

Existing local data can be imported repeatedly without creating duplicates.

Improved

Administrator synchronization

Configure administrators with ADMIN_EMAILS and synchronize permissions at startup.

v1.1.0

Uploads and a complete code workflow

Attach images and files to requests, edit workspaces online, import projects and export complete code.

New

Attachments

Upload screenshots, design references and requirement files for the model to read in its workspace.

New

Online code editing

Browse, edit and save project files directly in the current workspace.

New

Project import and export

Import an existing ZIP or download the complete project whenever you need it.

Fixed

Path boundary checks

Unified workspace validation blocks traversal and invalid filenames.

v1.0.0Major release

App0 public preview

Start with a natural-language description and complete planning, coding, verification and preview in a real sandbox.

New

AI full-stack builds

Turn product requirements into working Next.js and other full-stack applications.

New

Isolated workspaces

Every app has its own directory and execution boundary.

New

Live event stream

SSE shows planning, tool calls, file changes and build progress.

New

Live preview

Successful builds automatically create a containerized preview for immediate validation.

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