Changelog

Release 0.6.11 · November 1, 2026

Fewer bends in connection lines

• Connection routing counts corners at the component ports and keeps equally short, equally clear routes straight for longer before turning.
• The refrigeration example follows the flow around a simple rectangular loop, with two straight connections and four corners in total.
• The website now shows a fresh capture of the application's solved refrigeration model.

Choose Download update in the app, save your work, close ThermoFluid Studio, and run the downloaded installer. Updates are installed manually.

Release 0.6.10 · October 14, 2026

Account controls and cleaner diagrams

• Open Account at the top right to activate your license, reveal or copy its key, and see this computer and your license's active installations.
• Occupied ports keep their existing connection and highlight it. Rotate with the toolbar or R and Shift+R, and undo connection and rotation edits.
• Connection lines avoid nearby components, labels and other lines, with rounded corners and routes that update as you move components.

Release 0.6.9 · October 14, 2026

Update notifications and a simpler experience

• The app checks for new releases and shows an update notification with a download button and a reminder option. Save your work and close the app before running the downloaded installer.
• The app and Windows shortcuts now display ThermoFluid Studio.
• Simplified website and app text. New free licenses remain valid until the owner revokes them.

Release 0.6.8 · October 14, 2026

Readable text throughout the app

• Fixed white text on light backgrounds in startup notices, dialogs, menus, fields, and tables.
• Improved selection and disabled-control contrast in active and inactive windows.

To update, save your work, close ThermoFluid Studio, and run the latest installer.

Release 0.6.7 · October 12, 2026

Responsive calculations

• The app stays responsive during solves and parameter sweeps, with progress shown as calculations run.
• Cancel calculations while preserving previous results. Completed sweep points can be exported as partial results.
• Improved handling of model changes, license changes, and closing the app during a calculation.

Maintenance and updates

• Updated the bundled cryptographic dependency while retaining license signature verification.
• Retained the unsigned Windows installer and installation help.

Release 0.6.6 · October 12, 2026

Installation and updates

• Introduced the current unsigned Windows installer.
• This release installs separately from versions 0.6.1 and earlier. Activate it with your email and license key, and sign out of the older installation if you need to free its slot.

Modeling and reliability

• Added explicit pressure-based stream input pairs, phase-aware state previews, and clearer calculated, constrained, unavailable, and invalid values. Switching input modes preserves drafts and identifies constraints that Apply will replace.
• Component and project settings reject invalid inputs without partially applying changes. Unsupported quality inputs, pressures below the supported floor, and negative pipe heat loss receive explicit validation.
• Corrected the pressure contribution to enthalpy in the sodium model and stopped substituting numerical defaults for valid, very small positive efficiencies.
• Fixed paint bounds for rotated component labels and long stream labels during canvas movement and renaming.
• Malformed project files are rejected before replacing the current project. Removed Guided Setup and the decorative smiley from the interface; older annotation records remain preserved in project files and excluded from calculations.

Version 0.6.1 · July 21, 2026

Reliability and security

• Updates now use immutable, content-addressed installers with bounded downloads, trusted redirects, and a second SHA-256 check immediately before launch.
• Existing v0.5 and newer installations upgrade in place with their original scope, directory, settings, projects, and license identity preserved.
• License seats are enforced atomically for three active installations, with safe legacy migration and automatic recovery of machines idle for 30 days.
• Fresh signed licenses renew at most daily to reduce network and commerce-service work while long-running sessions continue renewing in the background.
• Read-only mode blocks editing and solving but keeps project open, inspection, Save/Save As, and current-session export available.

Website and billing

• Added support, changelog, rendered legal-draft, billing-management, custom 404, and permanent legacy-link routes.
• Billing management opens the hosted customer account for cancellation, payment-method, and invoice access.

Version 0.6.0 · July 21, 2026

Added

• In-app updates. A release banner can download the current installer, verify its SHA-256, upgrade in place, and restart the app. “Later” dismisses that release; Help → Check for Updates remains available.
• Checkout-email activation. Activation asks for the email used at checkout and the license key, and a renewed lease keeps the linked email visible in the app.
• Smiley Face annotation. A draggable decorative item that is deliberately ignored by the solver.

Fixed

• Sources and sinks no longer carry phantom, unconnectable ports.
• Background update and license results are reliably delivered back to the interface.
• Manual update checks no longer block the window on a slow connection.

Version 0.5.2 · July 19, 2026

• Added all 15 hand-verified systems to File → Open Example and shipped them as .tfluid files.
• Published quantified diagram-audit notes with the verification document.
• Hardened server-side licensing storage with HMAC-derived record keys.
• Introduced the current marketing site and published verification PDF.

Version 0.5.1 · July 19, 2026

• Published the independent, state-by-state verification campaign for 15 systems: 266 of 266 comparisons pass.
• Corrected two-phase recuperator heat direction, plant first-law summaries, and pipe heat-loss accounting.
• Added physical sampled process paths to cycle diagrams and pipe elevation effects to pressure and energy balances.

Version 0.5.0 · July 18, 2026 · pre-launch

Ground-up rebuild around the current ThermoFluid Studio workspace, multi-loop model, real-fluid properties, component library, local project files, licensing lease, and Windows packaging foundation.