🔍 Read the full analysis: Two Days To A New Look: How AI Agents Helped Gewerkton Relaunch on ThorstenMeyerAI.com

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Gewerkton, a construction-site documentation tool developed by Thorsten Meyer in Iffeldorf, Bavaria, replaced the design of its web app, iPhone and Android apps, Studio, icons and multilingual website on October 2–3, 2026. The publisher says the original analysis details how AI coding agents performed the implementation from written plans, while Meyer approved the plan, reviewed the results and released each part.

The relaunch introduced a design called HORIZON. Gewerkton says the changes covered 281 hard-coded web-app colour values moved into design tokens, with 11 exceptions retained, and 47 restyled cards. The phone app moved to the new look in version 0.5.0, while Studio received light and dark versions. All 26 icons were re-rendered in Blender in cobalt and navy.

The website comprises 529 pages in 40 languages, according to the company. Its new opening section uses real product screens. Gewerkton reports that 1,583 files were uploaded without an error and that the site received 228 AI-generated film runs for five regions, alongside eight help videos. Of the 228 runs, 222 had a regional version of their own.

The company qualifies the two-day description: a draft of the design dated September 26 was used as a starting point. The two days refer to implementation from the approved plan through the live website, not to creating the design from scratch. Meyer directs the coding agents, identified by the publisher as Codex and Claude, and retained release authority over the work.

Human Checks Shaped the Release

The relaunch offers a company-reported example of AI agents working across a product’s code and media production, while human review remained part of the delivery process. The agents were not given unrestricted authority to publish: work took place on a separate code branch, and each part waited for Meyer’s release. That distinction matters because the account describes a supervised workflow, not a fully autonomous redesign.

Some release decisions depended on people rather than automated checks. Films showing the apps were held until Meyer had examined and approved the new interface on October 3. Paid reruns also required explicit permission. Apple’s iPhone build could not proceed until Meyer accepted an updated Program License Agreement, a step only he could take.

The documented problems show why those gates mattered. Automated checks passed many tests, but a visual inspection caught icon tiles that obscured labels in dark mode. Film recolouring also missed red details in shadows and warm light. The account suggests that passing technical tests did not, by itself, establish that every screen and video looked right.

A Draft Preceded the Two-Day Push

Gewerkton is built by its publisher, Thorsten Meyer, who describes the project as a documentation tool for construction sites. The source account is published by ThorstenMeyerAI.com and discloses that the publisher built the product. Its description of agent performance, costs and release checks is therefore the company’s own account; no independent audit or external confirmation is provided in the supplied material.

The stated workflow began with a written plan listing open decisions, options and recommendations. Meyer approved the recommendations, after which the agents worked in a separate copy of the code. When the plan proved unsuitable, the team logged deviations and chose what it described as the conservative option. For example, the planned cobalt did not meet Gewerkton’s working contrast standard: it measured 4.38:1 against a light background, below the company’s 4.5:1 target under WCAG 2.1 AA. The colour was darkened to a reported 4.80:1.

Testing spanned several device sizes and languages. The web app was checked across 200 views in English, German, Japanese and Hindi, at widths of 390, 834 and 1,440 pixels, in light and dark modes. Gewerkton reports 853 of 853 phone-app tests and 2,158 of 2,158 Studio tests passing; the website passed seven of seven test suites and was checked again after upload.

““The two days cover the execution, from the approved plan to the live website.””

— ThorstenMeyerAI.com, the publisher and Gewerkton’s builder

Test Failures and Costs Need Context

The account reports eight failing web-app tests in seven files. It says six files fail the same way on the main branch and another failure depends on test order, passing when run alone. On that basis, the publisher says the redesign did not cause those failures, but also did not fix them. The supplied material does not include independent test logs with which to verify that explanation.

Film production also encountered failures: the work paused after round nine, when 38% of jobs were failing and 208 of 228 runs had been completed. Gewerkton says 76 failed jobs were not billed. Visual review found remaining red in some regional versions; 24 files were cleaned, 10 versions temporarily switched to the European cut, and nine were later reshot with Meyer’s approval. The source text begins to discuss cost but ends after stating “about 134 dollars actual,” without specifying the cost basis, so the total project cost cannot be established from the supplied material.

The publisher also reports that an Android test on a Pixel 10a found five major issues, none considered a blocker. It does not provide a complete list in the supplied text. One example was a camera-screen button breaking a German word across lines after the redesign increased type size and padding.

Version 0.5.1 Is Planned

Gewerkton says all five major findings from the Android test are scheduled for version 0.5.1. The supplied account does not give a release date. It also does not state whether the temporary use of European film cuts in 10 regional versions has since ended, or whether every film and regional variant has received a final replacement.

The next points to watch are the 0.5.1 release, any further correction of the Android layout findings, and the status of the regional film versions. The publisher has described its checks and changes, but has not supplied an independent review of the relaunch or enough cost detail to calculate the full expense of the work.

Key Questions

What changed in Gewerkton’s relaunch?

The HORIZON design was applied to the web app, iPhone and Android apps, Studio, all 26 icons and the website, which the publisher says has 529 pages in 40 languages. The company also reports 228 film runs for five regions and eight help videos.

Did AI agents complete the redesign without human involvement?

No. The publisher says Codex and Claude carried out implementation from a written plan, but Thorsten Meyer approved the plan, reviewed results and released each part. He also approved paid film reruns and had to accept Apple’s license agreement for the iPhone build.

Was the whole design created in two days?

No. Gewerkton says it used an interim design draft dated September 26. The October 2–3 timeframe refers to implementation from the approved plan through the live website.

What problems were found during the relaunch?

A visual review caught icon tiles obscuring labels in dark mode, and film recolouring missed some red details. The publisher also reports existing web-app test failures and five major findings in an Android test; those Android issues are scheduled for version 0.5.1.

How much did the relaunch cost?

The supplied source text is cut off after the partial statement “about 134 dollars actual.” It does not identify the cost basis or provide enough information to establish the total relaunch cost.

Source: ThorstenMeyerAI.com