🔍 Read the full analysis: What Happens When AI Agents Join A Brand Relaunch? Gewerkton’s Story on ThorstenMeyerAI.com

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Gewerkton, a construction-site documentation tool, replaced the design across its web and phone apps, Studio, 26 icons and website on Oct. 2-3, 2026, in a relaunch documented in the original analysis, which its publisher says was implemented by AI coding agents working from written plans. Founder Thorsten Meyer approved the plan, inspected results and released each part, making the project a closely documented example of how a small software company used agents alongside human review rather than handing them unrestricted control.

The new design, called HORIZON, reached the web app, iPhone and Android app, Studio in light and dark modes, and a website containing 529 pages in 40 languages. Gewerkton says the work also moved 281 hard-coded web-app colour values into design tokens, restyled 47 cards and re-rendered all 26 icons. The phone app release was version 0.5.0.

The website received 228 AI film runs for five regions, including 222 runs with regional versions, as well as eight help videos. The publisher says 1,583 website files were uploaded without an error. The two-day execution window did not include all design work: an interim draft dated Sept. 26 was used as a starting point, and the stated period runs from the approved plan to the live website.

According to the publisher’s account, agents worked on a separate code copy and branch. Meyer reviewed the work before anything was merged or delivered. Films showing the product were held until he approved the new interface on Oct. 3, and paid film reruns required specific approval. Apple’s latest Program License Agreement also had to be accepted by Meyer before the iPhone build could proceed.

Human Checks Caught Visual Failures

The relaunch offers a concrete account of both the speed and limits of an agent-assisted software project. Gewerkton says agents handled implementation across several product surfaces, but the work still depended on human approvals, visual inspection and decisions about when to stop or revise. The publisher’s disclosure is relevant because it built the product itself; the account is a first-party description, not an independent audit of the process or results.

Some defects escaped automated checks. The first icon version used white tiles that covered nearby labels in dark mode. Meyer spotted the issue by inspecting the interface; a script and layout adjustment fixed it the same evening. In another example, an automatic mask intended to remove red from promotional films missed red in shadow and warm light. Visual review identified a partly recoloured helmet and other leftover red, prompting file cleanup and temporary use of the European cut for 10 regional versions.

The project also illustrates why passing tests does not mean every issue is resolved. The web app’s inspection covered 200 views across four languages, three screen widths and both light and dark modes. The phone app passed 853 of 853 tests, and Studio passed 2,158 of 2,158. Yet the web suite still had eight failures in seven files. Gewerkton says six files failed the same way on the main branch and another failure depended on test order, so it attributes those failures to existing test issues rather than the redesign. The redesign neither caused nor fixed them, according to the publisher.

From Approved Plan to Live Site

Gewerkton is built in Iffeldorf, Bavaria, by Thorsten Meyer, who says he directs a group of AI coding agents using Codex and Claude. For this relaunch, the process began with a written plan listing open decisions, options and recommendations. Meyer approved the recommendations; agents then implemented the work on a separate branch, with each part held for his release.

The plan was adjusted when a colour check found that the original cobalt reached a contrast ratio of 4.38:1 against a light background, below Gewerkton’s stated working standard of 4.5:1 under WCAG 2.1 AA. The colour was darkened to 4.80:1 rather than shipped as drafted. The account also describes rejected film edits, including attempts that turned a person’s lips blue or put a blue patch on a face.

Film production did not run smoothly throughout. Work paused after round nine when 38% of jobs were failing; 208 of the 228 runs had been completed by then. Gewerkton says 76 failed jobs were not billed. It also reports redoing 80 industry clips after an initial image model made too little change to faces. These figures and explanations come from the publisher’s project records as described in its account.

““Two days” needs one qualification.”

— Gewerkton’s publisher, in its project account

What the Project Account Leaves Open

The source is a disclosure from Gewerkton’s publisher, which says it built the product and recorded what it learned. It does not provide an independent evaluation, and the account does not specify the full time, staffing or infrastructure costs behind the relaunch. It gives one cost figure for the films—about $134 in actual—but the supplied material cuts off before completing what that amount measures, so it cannot be treated as a full project cost.

It is also unclear from the account how the finished redesign performed after launch with customers, whether the reported test coverage captured all production conditions, or what the effect of the remaining web-test failures will be. Gewerkton reports that nine regional film runs were later reshot with Meyer’s approval and passed visual review, but does not give a final status for every remaining film issue.

Version 0.5.1 Holds Phone Fixes

Gewerkton says five major findings from testing the Android app on a Pixel 10a are scheduled for version 0.5.1; none was classified as a blocker. One example was camera-screen buttons whose larger type and padding caused the German word for “cancel” to wrap onto two lines. The source does not give a release date for that update.

The company’s account says nine regional film versions were reshot after the visual review and passed another check. It does not set out a further timetable for any remaining regional edits or for broader post-launch reporting. The next clear milestone is therefore the planned phone-app patch, while the longer-term results of the relaunch remain unreported.

Key Questions

What changed in Gewerkton’s relaunch?

The HORIZON design was applied to the web app, iPhone and Android app, Studio, 26 icons and a 529-page website in 40 languages. Gewerkton also reports creating 228 AI film runs for five regions and eight help videos.

Did AI agents complete the relaunch without human involvement?

No. According to the publisher, agents implemented the work from written plans, but Thorsten Meyer approved the plan, checked results and released each part. He also approved film reruns and had to accept Apple’s license agreement before the iPhone build could proceed.

What problems were found during the redesign?

Visual review caught icon tiles that obscured labels in dark mode and film edits that left red on helmets or other objects. A camera-screen button also wrapped German text on a Pixel 10a. Gewerkton says the phone findings are scheduled for version 0.5.1.

Did all of the tests pass?

No. The phone app passed 853 of 853 tests and Studio passed 2,158 of 2,158, while the website passed seven of seven test suites, according to Gewerkton. The web app had eight failing tests in seven files; the publisher says those failures were existing or test-order issues, not caused by the redesign.

How much did the relaunch cost?

The supplied account gives an incomplete figure of about $134 actual for the films, but the sentence is cut off before explaining the full measure. It does not provide a complete cost for the relaunch, including development time or other expenses.

Source: ThorstenMeyerAI.com