🔍 Read the full analysis: Can AI Agents Speed Up A Full Brand Relaunch? Gewerkton’s Experience on ThorstenMeyerAI.com

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Gewerkton, a construction-site documentation tool built in Bavaria, says AI coding agents carried out the implementation of its new HORIZON brand across its web app, iPhone and Android apps, Studio, 26 icons and a 40-language website on Oct. 2–3, 2026, as described in the original analysis. Founder Thorsten Meyer approved the plans and released each part, making the account a company-reported example of agents handling a broad redesign under human oversight—not evidence that the process can be replicated at the same speed elsewhere.

The relaunch changed the product’s colour system and 47 web-app cards, introduced version 0.5.0 of the phone app, and applied the new look to Studio in light and dark modes. Gewerkton says all 281 hard-coded colour values in the web app were moved to design tokens, with 11 exceptions retained deliberately. Its 26 icons were re-rendered in Blender, and the website’s 529 pages were updated in 40 languages. The company reports uploading 1,583 files without an error.

The two-day timeframe refers to implementation from an approved plan to the live website, not design work starting from scratch. An interim design draft dated Sept. 26 was used. The website also received 228 AI film runs for five regions, including 222 regional versions, plus eight help videos. Gewerkton says 80 industry clips were redone after the first image model made too little change to faces.

Meyer directed agents using Codex and Claude in a separate code copy and branch. He approved the written plan, reviewed results and controlled releases. Films depicting the apps were held until he had approved the interface; paid reruns also required his explicit approval. Apple’s developer agreement presented a separate human-only gate: the iPhone build could not proceed until Meyer accepted the latest Program License Agreement.

Human Review Shaped the Relaunch

The account illustrates a practical distinction in AI-assisted software work: agents can produce and revise implementation, but human approval remained part of the release process. Meyer decided whether plans were acceptable, checked visual output and authorized each release. One contrast decision also changed the planned design: Gewerkton says its cobalt colour measured 4.38:1 against a light background, below its stated 4.5:1 working standard under WCAG 2.1 AA, so the team darkened it to 4.80:1.

Testing numbers provide a record of what the company checked, but they do not establish that agents alone delivered the relaunch or that the process would work as quickly for another product. Gewerkton reports that the phone app passed 853 of 853 tests, Studio passed 2,158 of 2,158, and the website passed seven test suites. Its web-app suite still had eight failing tests across seven files; the company says six failures also occur on the main branch and one depends on test order. These results make the account more useful as an operational case study than as a general productivity benchmark.

Visual review mattered because some defects escaped automated checks. The first icons appeared on white tiles that obscured nearby labels in dark mode. Meyer spotted the issue by inspecting the interface; a script, a separate dark icon variant and a layout correction followed. The company says the fix went live that evening. The episode shows why test counts alone do not capture whether a redesigned interface looks and behaves correctly.

A Draft Preceded the Two-Day Sprint

Gewerkton is built in Iffeldorf, Bavaria, by Thorsten Meyer. The source account comes from ThorstenMeyerAI.com, whose publisher discloses that it builds Gewerkton and documents its own work. That relationship matters: the schedule, test totals, costs and performance descriptions are company-reported, not independently audited findings.

The project combined software changes with a large volume of generated and edited media. Gewerkton says it inspected 200 web-app views across four languages—English, German, Japanese and Hindi—at widths of 390, 834 and 1,440 pixels, in light and dark modes. The website was checked in-browser at three widths across five regions, then tested again after upload. For films, the company visually inspected the middle frame of each of 157 mirrored films and viewed each reworked film again at 10%, 50% and 90% of its duration.

The film work also involved setbacks. Gewerkton says production paused after round nine when 38% of jobs were failing, with 208 of 228 runs completed; the 76 failed jobs were not billed. A recolouring mask missed red in shadows and warm backlight, so visual review found errors the automated scan did not. Twenty-four files were cleaned, and ten regional versions with remaining red were temporarily replaced by the European cut. Nine runs were later reshot with Meyer’s approval.

“The source describes a plan listing open decisions, options and recommendations, which Meyer approved as recommended.”

— Thorsten Meyer, Gewerkton founder, in the company’s account

Costs and Performance Need More Detail

The supplied account ends as it begins to discuss costs, giving only one figure: approximately $134 in actual costs for the films. It does not provide a full budget for the relaunch, a breakdown of agent usage or the time Meyer and others spent planning, reviewing and correcting output. The figure should not be treated as the total cost of the brand redesign.

It is also unclear how the company counted agent time, how many prompts or iterations were needed, or how the reported two-day implementation compares with a conventional team doing the same work. No independent review or before-and-after productivity measure is provided. The company says five major findings from an Android test on a Pixel 10a were not blockers and are scheduled for version 0.5.1, but the account does not give a release date.

Some media choices remain provisional. Ten regional film versions were temporarily switched to the European cut, and nine were later reshot. The material does not specify whether the remaining version was subsequently replaced or explain the final status of every regional film. The company’s reports of passed tests and visual checks also do not establish that every page, device or use case was free of defects.

Version 0.5.1 Is Planned

Gewerkton says the five major findings from its Android test are scheduled for phone app version 0.5.1. One reported issue involved camera-screen buttons breaking mid-word after the redesign increased type size and padding; the German word for “cancel” now wraps onto two lines. The company described the findings as non-blocking, but did not provide a release date.

The account also says nine regional film runs were reshot after Meyer approved them and passed visual review. It does not give a final status for all regional versions. Further updates to the app, films or relaunch costs were not specified in the material provided.

Key Questions

What did Gewerkton change in the relaunch?

Gewerkton says it applied the HORIZON design to its web app, iPhone and Android apps, Studio, 26 icons and a website with 529 pages in 40 languages. It also produced 228 AI film runs for five regions and eight help videos.

Did AI agents complete the redesign without human involvement?

No. AI coding agents carried out implementation from written plans, but founder Thorsten Meyer approved the plan, reviewed results and released each part. He also approved paid film reruns, and only he could accept Apple’s required developer agreement.

Does “two days” mean the design began and finished on Oct. 2–3?

No. Gewerkton says an interim design draft dated Sept. 26 was carried into the work. The two-day description refers to execution from the approved plan to the live website.

What problems did the team find?

Visual review caught white icon tiles that obscured labels in dark mode and red areas missed by an automated film-colour mask. The account also reports failed film jobs and an Android button-wrapping issue. Gewerkton says five major Android findings are scheduled for version 0.5.1.

Is the reported $134 the full relaunch cost?

No. The supplied account gives about $134 as an actual cost for the films, but does not provide a full relaunch budget or a breakdown of other costs, including planning and human review.

Source: ThorstenMeyerAI.com