WINDOWS X64 · MSI WIX
Continuity for your Visual Basic application.
Import spectra, select resonances and inspect the fit before moving to diffusion, shape and size, and Wirtz and Chen corrections.
Four stages, one analysis.
Point fitting
Review intensities, exclusions, slope and R² alongside the plot.
Diffusion
Check sequence, calibration, timings and conditions before interpreting D.
Shape and size
Inspect geometric models using the analysis temperature and viscosity.
Wirtz · Chen
Compare correction factors, radii and iteration convergence.
Workflow diagram; not a screenshot or an experimental result.
Your data stay on your computer.
SQLite stores analyses locally. The working folder is remembered per computer and recovered without credentials for that preference. The public installer includes no experiments, saved projects or personal data.
Two clearly identified editions.
Legacy Original 1.0.0 is the Visual Basic / Windows Forms application. DiffAtOnce Legacy 2.11.1 is the WPF edition. Their installers have separate identities and program folders so they can coexist.
View Legacy WPF →LEGACY ORIGINAL 1.0.0
Installation and provenance.
Windows x64 · .NET Framework 4.8 · OxyPlot · SQLite. The per-user MSI installs in %LOCALAPPDATA%\Programs\DiffAtOnce\DiffAtOnceLegacyOriginal. Back up your data and close the application before updating.
Download MSI installer ↘- Version
- 1.0.0
- Exact size
- 9,310,208 bytes
- SHA-256
f132384adab5c3f88de45b1c9a37205ac0fda1b217e10094b0b5b33911a97bb9
Studio 0.1.3 or later manages this edition as “DiffAtOnce Legacy Original”. Studio 0.1.2 and Legacy WPF retain their own channel and downloads. Studio catalog signing and the hash verify provenance and integrity; they are distinct from Windows Authenticode signing.
Open the Studio page →Results with their conditions.
Workflow continuity and software checks are not a new calibration or experimental validation of diffusion or geometry. Check units, reference and fit quality. Good convergence or a high R² alone do not justify excluding acquisitions.