🔍 Read the full analysis: Gewerkton Rebuilt Its Look In Two Days—Here’s How AI Agents Helped on ThorstenMeyerAI.com

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Gewerkton, a construction-site documentation tool, replaced the look of its web and phone apps, Studio, icons and multilingual website on Oct. 2-3, 2026, using AI coding agents to carry out implementation from plans approved by its creator, Thorsten Meyer. The company says the relaunch covered 529 website pages in 40 languages, as well as 228 AI film runs; the two-day timeframe describes execution, not design from scratch, as detailed in the original analysis.

Gewerkton is built in Iffeldorf, Bavaria, by Meyer, who directed coding agents from Codex and Claude during the work. The agents worked on a separate copy of the code and branch. Meyer approved the written plan, reviewed results and released each part; nothing was merged or delivered before his approval. The new design is called HORIZON.

The redesign moved 281 hard-coded web-app colours to design tokens, restyled 47 cards and carried the new look into phone-app version 0.5.0 for iPhone and Android and Studio in light and dark modes. All 26 icons were re-rendered in Blender. The website received a new opening section and 1,583 files were uploaded, which Gewerkton says completed without an error. The site also received 228 film runs for five regions, including 222 regional versions, plus eight help videos.

Gewerkton reports that the phone app passed 853 of 853 tests and Studio passed 2,158 of 2,158. The website passed seven test suites and browser checks across three screen widths and five regions. The web app’s suite still had eight failures across seven files: the publisher says six also fail on the main code branch and one depends on test order, so it did not attribute those failures to the redesign. It also says the issues were not fixed as part of the work.

Human Approval Shaped the Rollout

The project offers a specific account of how AI coding agents can be used in a live product release: agents handled implementation, while a person retained control over plans, review and release. That division matters because a large visual change can affect accessibility, navigation, app behavior and customer-facing media, not just a color palette.

The account also shows the limits of automated checks. A visual inspection caught white icon tiles that obscured nearby labels in dark mode, a problem the tests had missed. In film edits, automated red-color masks failed to catch some red details in shadows and warm lighting. Gewerkton says human review identified the cases, illustrating why its process combined software tests with visual inspection and approval gates.

These figures and lessons come from the product’s publisher, which disclosed that it builds Gewerkton and documents its own work. The reported results describe this rollout; they do not establish that the same speed or outcome would apply to other products or teams.

The Design Work Predated October

Although Gewerkton describes the execution as taking two days, it says an interim design draft dated Sept. 26 informed the work. The Oct. 2-3 period therefore ran from an approved plan to the live website, rather than from an initial idea to a finished design.

The plan listed open decisions, options and recommendations. Meyer approved the recommendations, and the agents worked in a separate branch. Some actions remained explicitly human-controlled: app and website changes were released only after review, films showing the new interfaces were held until Meyer approved them on Oct. 3, and paid film reruns required his permission. Apple also required Meyer to accept its latest Program License Agreement before the iPhone build could proceed.

One design choice changed during implementation. The original cobalt did not meet Gewerkton’s stated 4.5:1 contrast working standard against a light background: it measured 4.38:1. The team darkened it to 4.80:1 rather than shipping the planned shade. The company relates that standard to WCAG 2.1 AA.

““Two days” needs one qualification. An interim draft of the look from 26 September was carried into the work.”

— Gewerkton’s publisher, ThorstenMeyerAI.com

Remaining Fixes and Cost Details

The rollout account does not identify independent testing or provide customer feedback, so the reported test results and lessons remain the publisher’s own account. It also does not give a full cost breakdown for the redesign. The source material says the film records show about $134 in actual costs, but does not specify here what that figure includes or whether it covers all project work.

Some film issues were still being addressed after the initial run. Gewerkton says production paused after round nine when 38% of jobs were failing; 208 of 228 runs had been completed at that point, and the 76 failed jobs were not billed. The source says nine regional runs were later reshot with Meyer’s approval and passed visual checks. It does not give a final status for every film or specify when all remaining regional versions will be complete.

The Android test on a Pixel 10a found five major issues, including camera-screen buttons breaking mid-word after larger type and padding were introduced. Gewerkton says none was a blocker and all five are scheduled for version 0.5.1. The timing of that release is not provided. The web app’s eight test failures also remain, though the publisher says they were not caused by this redesign.

Version 0.5.1 and Further Film Checks

Gewerkton says it plans to address the five Android findings in version 0.5.1; no release date is stated. The publisher’s account says nine regional films were reshot after review, while other film runs had been visually checked and some versions temporarily switched to a European cut when red details remained. Further status updates would clarify whether those temporary substitutions are replaced and whether any additional app or web fixes are planned.

The immediate next milestones are the Android update and any remaining film revisions. The source does not announce a broader product roadmap or a date for another design release.

Key Questions

What changed in Gewerkton’s redesign?

The HORIZON look was applied to the web app, iPhone and Android apps, Studio, all 26 icons and the website. Gewerkton says the site includes 529 pages in 40 languages and received 228 AI film runs across five regions.

Did the redesign really take only two days?

The publisher says implementation and release took place on Oct. 2 and 3, 2026. An interim design draft dated Sept. 26 already existed, so the two-day claim does not cover the full design process.

What did the AI agents do, and what did Meyer control?

Agents from Codex and Claude carried out implementation from a written plan in a separate code branch. Meyer approved the plan, reviewed the work and released each part. He also had to approve paid film reruns and accept Apple’s license agreement for the iPhone build.

Were there problems during the rollout?

Yes. Visual review found dark-mode icon tiles that obscured labels and missed red details in some films. Gewerkton also reports five Android findings scheduled for version 0.5.1. It says the rollout’s eight web-app test failures were not caused by the redesign, though they remain unresolved.

Source: ThorstenMeyerAI.com