Changelog

What changed in each release, newest first. The full history, including the changes of each program before the merge, is in the repository.

0.8.0 — 2026-10-05

• Theory sections for the eight working programs, in English and Turkish: equations, assumptions, limits of validity and references, linked from every program and from the dashboard. Liquefaction and Correlation have their overview pages on this site.

0.7.0 — 2026-10-05

• Pro Plus ($12 a month, $120 a year) opens every program and alone opens the finite element programs: SlipSurface IQ 2D, 3D and Tunnel (being built). Pro keeps Pile Capacity, Pile Wall Analysis and the other programs to come.

0.6.1 — 2026-10-05

• LE section: zoom and pan (wheel, drag, Fit), the drawing is clipped to the frame, and an edited model no longer shows the result of the old one. The dashboard's dark mode works.

0.6.0 — 2026-10-05

• Plans open programs: Free opens Limit Equilibrium, Bearing Capacity, Settlement and Soil Correlations; Plus ($4 a month, $40 a year) adds Rock Kinematics and Liquefaction; Pro opens every program, the ones still to come included.

0.5.5 — 2026-10-05

• LE section: the strata are filled to the bottom of the outline and a surcharge has room above the ground.

0.5.4 — 2026-10-05

• The small XSS leftovers are closed: program pages allow no inline styles, material colours from project files are validated, LE escapes everything it writes into the page, and downloads are served sandboxed.

0.5.3 — 2026-10-04

• Every program page carries a strict content security policy: only its own scripts and one nonce-marked script run, nothing loads from another site.

0.5.2 — 2026-10-04

• The dashboard's login is an HttpOnly cookie instead of a token kept in the browser's storage, so a script injected into the page cannot read it. Everybody signs in once more.

0.5.1 — 2026-10-04

• Education plan: accounts with a confirmed .edu.tr e-mail address get Pro for free.
• Pro now costs $7 a month or $70 a year.

0.5.0 — 2026-10-04

• Free accounts get reports: the PDF, Word and HTML reports of every program are free and carry a small SlipSurface IQ logo; Pro reports have none. Saving projects and the Excel export of studies stay Pro.

0.4.6 — 2026-10-04

• USAGE_BASELINE adds the analyses run before counting began to the public totals.

0.4.5 — 2026-10-04

• The public figures count everyone: every analysis whoever ran it, the owner's and the testers' included, plus the runs saved through the project API; the subscribers are every active paid account.

0.4.4 — 2026-10-04

• Public figures: the home page shows the number of registered users and Pro subscribers and the analyses run, in total and over the last 30 days. Only counts are kept, never who ran an analysis or with what model.
• Every release in the changelog carries its date.

0.4.3 — 2026-10-04

• Security hardening of the web service: sign-in is limited per account and per address, sign-up and password reset are limited per address, responses carry security headers, the API documentation is closed in production, and the service refuses to start without a strong secret key.

0.4.2 — 2026-10-04

• The Pro/Free badge, the "Load example" button and the locked-button hint follow the language of the program.
• The dashboard, pricing, sign-in and e-mail pages are in Turkish as well, including the program cards and the tutorials.

0.4.1 — 2026-10-04

• LE draws the critical slip surface with its sliding mass shaded, marked entry and exit points and the circle it belongs to as a dashed line; the section is no longer squeezed by the search grid.

0.4.0 — 2026-10-04

• LE draws the section as a closed outline, RS2 style: draggable corners with snapping, layer and water-table tools, undo.
• Kinematic colours the pole concentration from blue (sparse) to red (tightest clusters) with a colour bar.
• One version for the whole suite, shown on the dashboard and on every program page.
• Pile Wall Analysis with reinforced concrete bored piles, including the shear and link check; e-mail verification and password reset; programs open on an empty project.