🔍 Read the full analysis: Gewerkton’s Two-Day Relaunch Offers A Look At AI Agents In Design on ThorstenMeyerAI.com

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Gewerkton, a construction-site documentation tool, says it relaunched its web app, iPhone and Android app, Studio, icons and website in a new design called HORIZON on Oct. 2-3, 2026, as detailed in the original analysis. The company says AI coding agents carried out the implementation from written plans, while founder Thorsten Meyer approved the plans, reviewed results and released each part.

The company’s account says the redesign moved 281 hard-coded web-app color values into design tokens, restyled 47 cards and retained 11 deliberate exceptions. It also brought phone app version 0.5.0 into the new visual style, updated the Studio in light and dark modes, and replaced all 26 icons. The website’s 529 pages were updated across 40 languages. Gewerkton reports that 1,583 files were uploaded without an error.

The site also received 228 AI-generated film runs for five regions, of which 222 had a regional version, along with eight help videos. The company qualifies the description of the project as a two-day relaunch: an interim design draft existed on Sept. 26, so the two days describe execution from an approved plan through the live site, not the full design process.

Meyer approved a plan that listed open decisions, options and recommendations. Agents worked on a separate code branch, and each part awaited his release before being merged or delivered. Films showing the apps were held until he had reviewed the new interface on Oct. 3; paid film reruns also needed explicit approval. Apple’s developer agreement required a human action before the iPhone build could proceed. Gewerkton says the agents could not accept it on Meyer’s behalf.

Human Review Shaped the Relaunch

The account offers a specific example of how AI agents can contribute to a product redesign without acting as unsupervised decision-makers. Agents handled implementation tasks across several products, but planning, release approval and paid work remained under human control. The distinction matters to teams weighing whether agent-based coding can speed delivery while keeping responsibility and review with staff.

The reported problems also show why passing automated tests is not the same as a finished visual product. A first icon design put white tiles behind icons that covered nearby labels in dark mode. Meyer spotted the issue by inspecting the interface; no test had flagged it. A second review of promotional films found recoloring errors that the automatic mask missed, including red visible in shadows and warm backlight. The company says it corrected these cases after visual checks.

These details come from Gewerkton’s publisher, which disclosed that it builds the product itself. They provide a first-party account of the workflow, not an independently audited comparison of agent performance, costs or time saved. The project is relevant as a documented deployment, but it does not establish that the same approach or results will apply across other software teams.

From Draft to Live Release

Gewerkton is built in Iffeldorf, Bavaria, by Thorsten Meyer, who says he directs coding agents from OpenAI’s Codex and Anthropic’s Claude. The company describes the tool as software for construction-site documentation. Its relaunch touched the web app, phone apps, Studio, website content and promotional media, making the work broader than a single interface refresh.

The design plan set 4.5:1 contrast as Gewerkton’s working standard under WCAG 2.1 AA. The original cobalt color measured 4.38:1 against the light background, according to the account, so it was darkened to 4.80:1 rather than released as initially specified. The project also included checks across languages, screen widths and light and dark modes: the web app was reviewed in 200 views, in English, German, Japanese and Hindi, at widths of 390, 834 and 1,440 pixels.

Testing was extensive but not uniformly clean. 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 widths and five regions. The web app’s suite still had eight failing tests in seven files. The company says six files fail the same way on the main branch and one failure depends on test order and passes when run alone; it says the redesign neither caused nor fixed those failures.

“The cobalt in the original palette reached a contrast of 4.38:1 against the light background, short of the 4.5:1 that Gewerkton uses as its working standard under WCAG 2.1 AA.”

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

Costs and Performance Still Unclear

The available account does not provide an independent assessment of the work, a comparison with a human-only redesign, or a clear estimate of labor hours saved. It reports about $134 in actual costs for the films, but the source material ends before explaining the full cost basis or whether that figure includes all production and review work. The reported total should not be treated as the cost of the entire relaunch.

It is also unclear how much time Meyer and other reviewers spent preparing plans, checking outputs and correcting issues. The account gives counts for tests, files and film runs, but those figures are Gewerkton’s own records. They do not establish the quality of the product in everyday use or whether the updated apps have reached all users and app-store regions.

The company says an Android test on a Pixel 10a found five major issues, none considered blockers, including German button text breaking across lines. All five were scheduled for version 0.5.1. The source does not confirm whether that release has shipped or whether subsequent user reports have led to further changes.

Android Fixes and Film Checks

Gewerkton said the five major findings from the Pixel 10a test were scheduled for phone app version 0.5.1. The company’s account does not give a release date, so the timing and status of that update remain unconfirmed. The German cancel label wrapping onto two lines is one example of the interface issue the planned update is meant to address.

The account also says nine regional film runs with leftover red were later reshot with Meyer’s approval and passed visual review. The company reports that all reworked films were viewed at 10, 50 and 90 percent of their duration, while the middle frame of each of 157 mirrored films was inspected. Further updates would clarify whether the remaining regional cuts have been revised and whether the company intends to publish cost or performance measures beyond the project figures.

Key Questions

What did Gewerkton relaunch?

Gewerkton says it updated the web app, iPhone and Android app, Studio, all 26 icons and its website in 40 languages under the HORIZON design. It also produced regional promotional films and help videos.

Did AI agents make the design decisions?

According to the company, agents implemented changes from written plans. Thorsten Meyer approved the plan, reviewed results and released each part; he also approved paid film reruns and handled an Apple agreement that blocked the iPhone build.

What problems were found during the redesign?

A white background on the first icon set obscured labels in dark mode, and automatic film recoloring missed red in some shadows and warm lighting. An Android test also found buttons whose larger text and padding caused words to break across lines.

How much did the relaunch cost?

The source reports about $134 in actual costs for the films, but does not set out a full cost basis or establish that this amount covers the whole relaunch. It also does not report labor costs or time saved.

Source: ThorstenMeyerAI.com