52 releases are consolidated into 4 major-version chapters, covering 111 recorded improvements.
Major version chapterLatest generation
v4.0 - v4.2.9
Analytic Hierarchy Process Software 4.0-4.2.9
This chapter expanded decision-making methods while strengthening project, reporting, and printing workflows. Group Decision Making enabled aggregation of members’ projects, and Largest Eigenvector added another way to calculate priorities. Subsequent releases addressed crashes, file handling, report generation, deeply nested project models, and print orientation.
2 features18 bug fixes
Major features2
Introduced Group Decision Making, enabling users to aggregate individual members’ projects for a group decision.
Added the Largest Eigenvector calculation method for calculating priorities.
Bugs and reliability18
Addressed multiple crashes, including target-invocation, null-reference, null-source, empty-sequence, and invalid-path failures.
Improved project workflows by fixing Windows 11 ARM file open/save errors, settings persisting after a project closed, and loading deeply nested project structures.
Fixed reporting failures when an AHP model had no options or only one option, and corrected report printing so the selected page orientation is respected.
Fixed special characters in JSON causing API-call failures that made crash reporting impossible.
Versions 3.0 through 3.6 expanded AHP modeling from nested criteria through matrix-based comparisons, added decision and sensitivity visualizations, and improved chart access and export options. The releases also addressed crashes, hierarchy-editing errors, stale project data, and chart or matrix displays that could become misleading or incomplete.
21 features31 bug fixes
Major features21
Enabled unlimited sub-criteria for each criterion, with a graphical Goal, Criteria, and Sub-Criteria tree and reporting updated for sub-criteria and matrix comparisons.
Expanded pairwise comparison work with a full interactive matrix, direct numeric entry, a 1-9 input range, decimal Consistency Ratio display, and selectable calculation methods.
Added decision insight through criteria-weighted attribute, option-attribute, and sensitivity charts; diagrams could be saved or copied, and charts gained context-menu access to data, images, and Excel export.
Updated to .NET 4.8 for improved performance, added mixed-mode High DPI scaling across monitors, and made the diagram fly-over menu dismiss after a few seconds.
Bugs and reliability31
Corrected hierarchy and project-data issues, including deleted items appearing in comparisons, new criteria being added at the wrong level, project settings leaking after close, and renamed criteria not updating in the m
Addressed crashes affecting core work, including editing attributes with one option, creating criteria, changing an objective name, and closing a project while a separate chart window was open.
Improved chart and layout behavior for long text, prevented an unhelpful polar chart with fewer than three criteria, and fixed newly added options missing from the Radar chart.
Versions 2.0 through 2.2.1 expanded decision-workflow controls, made utility status more visible, and added 64-bit operation on 64-bit Windows. Releases also addressed crashes, reporting freezes, chart refresh issues, and update or feedback connectivity problems.
7 features8 bug fixes
Major features7
Made disqualified utility values red and satisficing utility values green, improving visual distinction of utility status.
Expanded option-list workflows with a context-menu Edit command and drag-and-drop option rearrangement.
Added settings for automatic update checks and delete confirmations, including a “Do not ask again” choice in deletion prompts.
Enabled the application to run as a 64-bit process on 64-bit Windows.
Bugs and reliability8
Improved application stability by resolving crashes tied to captionless dialogs, non-admin printing, undersized chart windows, third-party assemblies, and a null-reference error.
Restored feedback submission and update checking with the older SpiceLogic website.
Corrected a Wizard pairwise-comparison issue where the AHP column chart did not update.
Resolved a freeze triggered by clicking the Decision PDF or Excel Reporting button.
Major version chapter
v1.0 - v1.9.4
Analytic Hierarchy Process Software 1.0-1.9.4: Decision and Reporting Progress
Across versions 1.0 through 1.9.4, the product expanded decision-authoring, reporting, file-handling, and language capabilities. Fixes focused on calculation accuracy, chart and report presentation, and preventing crashes in common workflows.
9 features15 bug fixes
Major features9
Expanded reports to show Decision Context details alongside charts and metrics.
Improved decision-authoring workflow by clarifying 1:1 pair comparisons and allowing objectives to be added after entering pairwise comparison.
Made AHP files easier to open from Windows and avoided unnecessary save prompts when no changes were made.
Bugs and reliability15
Corrected consistency-ratio display after loading projects and fixed calculation bugs.
Addressed crashes involving chart viewing, Print Preview, number conversion, invalid file paths, and other crash cases.
Resolved sensitivity-chart display issues, including a clipped popup, scrollbars, and clipped legends in PDF, Excel, and Print Preview reports.
Corrected the Radar Chart to show a criterion’s utility value rather than its raw value.
The movement, year by year.
Every column shows the bugs, features, and interface work delivered in product releases that year.
