🔍 Read the full analysis: What A Two-Day Relaunch Looks Like With AI Agents: Gewerkton on ThorstenMeyerAI.com
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TL;DR
Construction documentation tool Gewerkton says AI coding agents implemented its HORIZON redesign across its web and phone apps, Studio, icons and 529-page website on Oct. 2-3, 2026. Publisher Thorsten Meyer says he approved the plans and releases, while tests and visual checks caught issues the automated process missed. The company’s account does not provide a complete project cost or independently verify its reported results.
Gewerkton, a construction-site documentation tool built by Thorsten Meyer in Iffeldorf, Bavaria, says it used AI coding agents to implement a redesign across its web app, iPhone and Android apps, Studio, icons and multilingual website on Oct. 2 and 3, 2026. Meyer says he approved the agents’ plans, reviewed their work and released each part; the original account describes a supervised workflow, not an autonomous relaunch.
The redesign, named HORIZON, covered 281 hard-coded web-app colour values moved to design tokens, with 11 exceptions retained, and 47 restyled cards. Gewerkton says phone app version 0.5.0 adopted the new look, as did Studio in light and dark modes. All 26 icons were re-rendered in Blender in cobalt and navy. The website comprises 529 pages in 40 languages; the company says it uploaded 1,583 files without an error.
The site also received 228 AI film runs for five regions, of which 222 had their own regional version, alongside eight help videos. The “two days” refers to implementation from an approved plan to the live website: an interim design draft dated Sept. 26 had already been carried into the work. Gewerkton says agents used Codex and Claude, working on a separate code branch; Meyer reviewed and released each stage before it was merged or delivered.
Checks included web-app inspections across 200 views, four languages, three screen widths and light and dark modes. The company reports that the phone app passed 853 of 853 tests and Studio passed 2,158 of 2,158. The website passed seven test suites, then received another browser check after upload. Gewerkton also reports eight web-app test failures in seven files; it says six failures also occur on the main branch and one passes when run alone. That account says the redesign neither caused nor fixed those failures.
Human Review Caught Design Failures
The account offers a concrete example of where AI-assisted software work still relied on human judgment. Automated tests and scripts checked layouts, code and media, but Meyer says his visual review found white icon tiles obscuring nearby labels in dark mode. A code-level layout conflict also contributed. The team made the icon backgrounds transparent, added a dark variant and corrected the layout; Gewerkton says the fix went live that evening.
Media changes showed a similar limit. The redesign removed red as a brand colour, including in film subjects’ helmets, jackets and emblems. An automated mask missed red in shadows and warm lighting, leaving some footage partly recoloured. Gewerkton says visual review led to 24 files being cleaned and 10 regional versions temporarily replaced with the European cut; nine runs were later reshot with Meyer’s approval. Other attempts were discarded when recolouring affected lips, faces or stickers.
For readers evaluating AI agents as a production tool, the report’s useful detail is not just the amount completed but the release gates and corrections. Meyer retained control over approvals, paid reruns and the Apple agreement needed to unblock an iPhone build. The source is the publisher’s own account, however, and does not establish that the same timeline, quality or cost would apply to other products.
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A Design Draft Came First
Gewerkton says the relaunch was built by its publisher, who also documented the work. That disclosure matters when weighing the account: the reported figures, test results and interpretation come from the project team, rather than an independent audit. The company describes the product as a tool for documenting construction sites and says it is developed in Iffeldorf, Bavaria.
The project did not begin with a blank page on Oct. 2. An interim HORIZON design draft from Sept. 26 was already available, and the two-day period covered execution of an approved plan. The plan listed unresolved decisions with options and recommendations; Meyer says he approved the recommendations. Agents then worked in a separate copy of the code on their own branch, with human release approval required at each stage.
Some work depended on decisions or checks that agents could not make. Meyer says Apple blocked the iPhone build until he accepted the latest Program License Agreement. He also required approval before paid film reruns and held films showing the updated product until he had reviewed the interface on Oct. 3. When the planned cobalt colour measured 4.38:1 against the light background—below Gewerkton’s stated 4.5:1 working standard under WCAG 2.1 AA—the team darkened it to a reported 4.80:1.
“The two days cover the execution, from the approved plan to the live website.”
— Thorsten Meyer, Gewerkton publisher, in the project account
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Costs and Independent Checks
The source material ends just as it begins to discuss project costs, giving only an actual film cost of about $134. It does not provide a complete cost for the relaunch, including agent subscriptions, staff time, software, or other production expenses. It also does not clarify how the reported $134 was calculated or what period and services it covers.
The reported tests and visual checks are Gewerkton’s own results; no independent testing or verification is described. The account says 76 film jobs failed and were not billed, and that production paused after round nine when 38% of jobs were failing, with 208 of 228 runs completed at that point. It does not give a full breakdown of the later recovery or explain whether all five regional versions will retain the same film set. Five major issues found in an Android test were scheduled for version 0.5.1, but the source does not confirm that release has shipped.
multilingual website development software
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Android Fixes Await Version 0.5.1
Gewerkton says five major findings from an Android test on a Pixel 10a are scheduled for version 0.5.1. None was classified as a blocker in the account. One example involved the redesigned camera-screen buttons: larger type and additional padding caused German button text, including the word for “cancel,” to wrap across two lines. The source does not give a release date or confirm the fixes are complete.
The account also says nine film runs with leftover red were later reshot after Meyer approved them and passed visual inspection. It does not specify a further publication schedule for those regional versions. For now, the next confirmed milestone in the material is the planned Android update; the broader status of remaining film revisions and the project’s full cost is not stated.
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Key Questions
What did Gewerkton change in the relaunch?
Gewerkton says its HORIZON redesign covered the web app, iPhone and Android apps, Studio, all 26 icons and a 529-page website in 40 languages. The project also included 228 AI film runs for five regions and eight help videos.
Was the redesign created entirely in two days?
No. The company says an interim design draft existed on Sept. 26, 2026. The Oct. 2-3 period refers to implementation from an approved plan to the live website.
Did AI agents make all the decisions?
According to Meyer’s account, agents carried out implementation from written plans, but Meyer approved the recommendations and released each part. He also reviewed films and approved paid reruns. Apple’s license agreement required action by Meyer before the iPhone build could proceed.
What problems did the team report?
Visual review found icon tiles that obscured labels in dark mode and film recolouring that missed red in shadows or affected other details. An Android test also found button text wrapping. Gewerkton says five major Android findings are scheduled for version 0.5.1.
How much did the relaunch cost?
The available source gives only one figure: about $134 in actual film costs. It does not provide a total project cost or detail all expenses, so that amount should not be read as the full cost of the relaunch.
Source: ThorstenMeyerAI.com
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