• Smith networks and projects save as .sdnet and .sdproj, and open from the system • Notes with maths on every network, in PDF reports • Z/Y/Γ port and profile entry, skin-effect line loss • Fixed series stubs and filled contours • Trace Designer: more accurate solver

• Finite Q and self-resonant frequency on inductors and capacitors, seen by the chart, the sweeps and the SPICE export • Series blocks beside parallel ones, and a tuning card that steps through every parameter of an element • Export load- and source-pull data as it reads at any plane • Sensitivity maps fill toward their optimum, and a new LNA Source-Pull example • Fixed: a contour plane moved toward the source ran the network backwards

• Hover or long-press a tolerance region for its own read-out: samples, centre, the range of |Γ|, R, X, VSWR and return loss, the spread and the region's size • Select the source or load anywhere and tune it from a card, with a toggle between its real and imaginary part • Chart exports now carry the grid readings, the trajectory arrows and the panels, and export as editable diagrams too • Delete one or all markers from the Data Explorer marker menu

• 3D Smith tube: constant-Q contours now stay inside the chart, the operating point is marked, and the grid intensity is adjustable • Trace Designer: a PDF export with missing or out-of-date results offers to run the analysis first, and its drawings fill their boxes • Charts: one marker toolbar with a clear button, readouts with the decimals the zoom needs, and markers that drag from anywhere on their line

• Grid styles: Adaptive graduates the grid like a printed chart and refines it as you zoom; Classic reproduces the printed chart's full graduation; Custom keeps your value lists • Radially scaled parameters under the chart and circumferential scales around the rim, both optional and both in PNG/SVG export • Element trajectories sampled adaptively — smooth through resonances and long lines • Help Center tables and equations fit the panel

• Smith Chart: the sweep plot now toggles between magnitude and phase — two views of one sweep, both refetched over the same window, so a zoom taken in the phase view stays there • Trace Designer: new stack-up mode — a whole PCB of copper and dielectric layers, with structures placed on a chosen layer against a chosen reference • Touchstone files of up to eight ports load correctly • Fixes to marker menus, marker readouts and cross-section labels

• The Resonator Designer now draws the response its element values imply — magnitude and phase, in impedance or admittance, with the resonance, the −3 dB edges and Q marked • Toolbars re-laid out: the title takes only the width it needs, so the button ribbon gets the rest of the bar • Save dialogs no longer produce doubled or missing file extensions

VENDOR COMPONENT LIBRARY • Libraries stored as ZIP archives keep working after an app update. Their locations are now recorded in a form that is re-resolved each time they are used, so an update that relocates the app's own storage no longer leaves the library list pointing at files that are not there any more. • Broken library entries repair themselves. If a recorded archive path is no longer valid, the app locates the archive in its own library folder and updates the saved entry; references left over from older versions are converted automatically. • Archives chosen from the file picker are copied into the app's own storage where a picked path would not survive a restart, so the library stays usable. Where the path is stable the archive is used in place and not duplicated. • Upgrading no longer forces a full re-scan. Existing library indexes are converted to the new format without re-reading the S-parameter files, so a twelve-thousand-part library is ready immediately. • Indexes are written atomically, so an interrupted write can no longer leave a damaged cache that forces a rebuild. A cache that is damaged or of the wrong version is quietly rebuilt rather than reported as an error. • Shortly after the Smith Chart opens, library entries are checked and stale indexes refreshed in the background, so the library dialog and auto-match open without a pause. You are notified only when a source is genuinely gone. • Clearer messages when a library is unavailable: a one-line prompt naming the missing library and pointing at the library settings, instead of an empty component list. The library dialog says so directly when the source of a library you pick has vanished. • The recent-libraries list now records only libraries that actually loaded, entries pointing at the same archive are merged, and the list is healed and pruned each time the dialog opens. • The library configuration dialog validates each entry in the background, flags an inaccessible source with a warning icon, and offers a per-row re-index or re-pick. MONTE CARLO DISTRIBUTION VIEWER Panning and zooming the vertical axis is now clamped to the meaningful 0–100% band, so zooming out or dragging can no longer scroll the view into negative probabilities or fractions above 100%. IMPEDANCE PROFILES AND FILE IMPORT ON IPHONE AND IPAD • Importing an impedance profile works again. Import S1P and Import CSV in the impedance profile editor were offering their file types to the picker in a way iOS does not apply, so Touchstone files appeared greyed out and could not be chosen at all. The picker now accepts any file on iOS and checks the contents once you have chosen; desktop keeps its exact per-type filter. • An import that yields no usable points now says so and names the file, instead of leaving the table unchanged with no explanation. • The impedance profile editor has a tidier footer: the screenshot buttons are gone and Cancel and Save are now icons. • The remaining file pickers — element S-parameter data, vendor library archives and saved designs — were checked against the same platform rules and now share one implementation, so a change to one cannot quietly break another. BUG FIXES AND IMPROVEMENTS Numerous stability, rendering, and accuracy improvements across the Smith Chart, Trace Designer, and Data Explorer.

IN-APP HELP CENTER The Smith Chart, Trace Designer, and Data Explorer each have a searchable Help Center covering the theory, the algorithms, and the settings behind what they compute — wildcard search, sectioned topic lists, deep links from individual controls, and rendered equations. • The topic library more than doubled. Smith Chart topics now include interactive pages with live schematic symbols for every matching element. • Trace Designer topics cover the boundary-element solver, the conductor and dielectric loss models, and the surface-roughness corrections. • Data Explorer topics cover every view and import format. • Topics carry theme-aware diagrams, including PCB cross-sections drawn for the structure you are actually working on. MEASURED S-PARAMETER ACCURACY Tabulated S-parameters from Touchstone files now interpolate along the arc between samples rather than the chord across it. Between two samples of a reflective port — an antenna out of band, a filter stopband — the old straight-line interpolation cut inside the unit circle and understated the reflection magnitude; derived quantities that divide by (1 − |Γ|²), available gain most of all, could be wrong by many dB. Data is now read as measured at every frequency in between. INTERACTIVE PERFORMANCE Grid, contour, and load-pull sliders now update their labels live and defer the expensive redraw until you release them, so dragging stays smooth even on dense contour grids and large Smith Tube views. Touchstone files are parsed once per sweep rather than once per frequency point per Monte Carlo trial. BUG FIXES AND IMPROVEMENTS Clearer layout for the vendor library configuration dialog on narrow screens. Numerous stability, rendering, and accuracy improvements across the Smith Chart, Trace Designer, and Data Explorer.

MATCHING NETWORK TOLERANCES & MONTE CARLO New component-level tolerances for matching network elements feed directly into Smith Chart Monte Carlo trials, with convex-hull region overlays and synchronized system Z0 across designs for tighter, more accurate impedance-spread visualization. • Noise figure readouts now show their source (block, file, or manual entry), and noise data can be pasted directly from clipboard Touchstone text. • New impedance grid overlay on the Smith Chart. SPICE EXPORT A major rework of the SPICE netlist export delivers higher-fidelity matching network models. TRACE DESIGNER Double-tap to edit dimension and parameter labels (h, t, w_bot, w_top, εr/tanδ) directly on the cross-section diagram, with quick-edit dialogs and expression input support. Readout and copy-report formatting has also been improved. DATA EXPLORER Improved data handling and clearer user feedback when importing and viewing network-parameter files. BUG FIXES AND IMPROVEMENTS Fixed matching network overlay toggles (VSWR/return-loss/Q circles, stability circles, gain circles, noise circles) resetting to defaults when reopening a saved matching network. Improved decimal input handling across dialogs. Numerous stability, rendering, and performance improvements across the Smith Chart, Trace Designer, and Data Explorer.

Several updates and bug fixes

Updated UI and bug fixes

Improved and more streamlined UI More robust vendor library handling