🔍 Read the full analysis: Gewerkton’s Brand Refresh Shows How AI Agents Can Speed Up A Relaunch on ThorstenMeyerAI.com

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Gewerkton, a construction-site documentation tool, says AI coding agents carried out the implementation of its HORIZON redesign across its web app, iPhone and Android apps, Studio, icons and multilingual website on Oct. 2 and 3, 2026, as detailed in the original account. Founder Thorsten Meyer approved the written plan and released each part after review; the company’s account also describes visual defects and production setbacks that required human attention.

The relaunch changed 281 hard-coded web-app colour values to design tokens, restyled 47 cards, and applied the new look to phone-app version 0.5.0 and Studio in light and dark modes. All 26 icons were re-rendered. The website spans 529 pages in 40 languages, and Gewerkton says 1,583 files were uploaded without error. The work also included 228 AI film-generation runs for five regions, eight help videos, and regional versions for 222 of the runs.

The description of the work as a two-day execution has a qualification: an interim design draft dated Sept. 26 was used, so the design did not begin from scratch on Oct. 2. Meyer’s account says agents worked in a separate code copy and branch, and no part was merged or delivered until he approved it. Films showing the redesigned apps were held until he had reviewed the interface, and paid film reruns required a separate approval.

Reported checks included reviewing the web app in 200 views across four languages, three screen widths and light and dark modes. The phone app passed 853 of 853 tests and Studio passed 2,158 of 2,158, according to the account. The website passed seven test suites and was checked in five regions. The web app’s test suite still had eight failures across seven files; the account says six files failed the same way on the main branch and another failure depended on test order. Those failures were not caused by the redesign, but were not fixed by it.

Where Human Review Changed the Release

The account illustrates a distinction between agent execution and decision-making. The agents performed implementation work from a written plan, but Meyer retained control over approvals, releases and paid reruns. Some actions were unavailable to the agents altogether: Apple required Meyer to accept an updated Program License Agreement before the iPhone build could proceed.

Reported defects also show why passing automated checks did not settle whether the relaunch was ready. In dark mode, white tiles behind the redesigned icons covered adjacent labels. A visual inspection caught the problem, and the fix combined icon processing with a layout adjustment. The account says no test had flagged it. For a product used on construction sites, legible controls across devices and languages affect whether teams can use the documentation tool reliably; the source does not provide independent user-impact data.

The episode offers a specific account of using coding agents in a product relaunch, rather than evidence that every similar project can be completed in two days. The published timing covers execution from an already approved plan, while human review and corrective work remained part of the process.

A Draft Preceded the October Work

Gewerkton is built in Iffeldorf, Bavaria, by Thorsten Meyer, who says he directs a fleet of AI coding agents, including Codex and Claude. The source account discloses that Gewerkton is built by its publisher, which builds the product and documents what it learns. That relationship is relevant when weighing the account’s descriptions of speed, tests and outcomes: the figures are company-reported, not independently audited in the supplied material.

The redesign was called HORIZON and replaced the previous look across the product and website. Meyer’s account says the approved plan listed unresolved decisions, available options and recommendations. The agents then worked from that plan. Where implementation did not match the plan, the deviation was logged and a conservative option was chosen. For example, the planned cobalt colour measured 4.38:1 against a light background, below Gewerkton’s stated 4.5:1 working standard under WCAG 2.1 AA. The colour was darkened until the reported contrast was 4.80:1.

The film work added a separate production track. The website received 228 runs, but not every generated result was accepted. Earlier clips were redone after the first image model made little change to faces. The account says 80 industry clips were redone, and the middle frame of each of 157 mirrored films was visually inspected. Reworked films were also viewed at 10, 50 and 90 percent of their duration.

“The design did not start from nothing on 2 October.”

— Thorsten Meyer, in the publisher’s account

Costs and Remaining Defects

The source material ends after stating that project records put the films’ actual cost at about $134. It does not clarify the accounting scope, whether that figure includes staff time or other relaunch work, or how it relates to the failed jobs. Gewerkton says 76 failed film jobs were not billed, but the account does not provide a full cost breakdown.

Some film outputs contained visible colour errors that automated masking missed, including red in shadows or warm backlight. After review, 24 files were cleaned and 10 regional versions with leftover red were temporarily replaced by the European cut. The account says nine of those runs were later reshot with Meyer’s approval and passed visual review; it does not explain the disposition of the remaining version.

On Android, a Pixel 10a test found five major issues, none classified as blockers. One involved buttons breaking words across lines after larger type and padding were introduced. Gewerkton says all five are scheduled for version 0.5.1. The supplied account does not state when that release will ship, nor does it provide independent verification of test results, overall production time or customer response.

Version 0.5.1 and Film Rechecks

Gewerkton’s stated next product step is to address the five Android findings in version 0.5.1. The account does not give a release date. It also says nine regional film runs were reshot and passed visual review after the initial checks identified leftover red; the source does not say whether further reshoots or checks are planned.

The immediate follow-up will be whether the scheduled fixes reach users and whether the remaining reported defects or test failures receive separate attention. The account describes the relaunch as live, but supplies no independent assessment of performance after release, customer feedback or the ongoing cost of maintaining the refreshed assets.

Key Questions

What did Gewerkton change in the relaunch?

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

Did the entire redesign take two days?

No. The company says the implementation ran on Oct. 2-3, 2026, but an interim design draft from Sept. 26 was already available. The two-day description refers to execution from the approved plan to the live website.

Did AI agents approve and release the changes?

According to Meyer’s account, agents carried out implementation from written plans, while he approved the plan, reviewed results and released each part. Paid film reruns also required his explicit approval.

What problems were found during the work?

Visual review found icon tiles that obscured labels in dark mode and colour errors in some AI-generated films. An Android test on a Pixel 10a also found five major issues, which Gewerkton says are scheduled for version 0.5.1.

How much did the film work cost?

The supplied account gives an actual film cost of about $134 and says 76 failed jobs were not billed. It does not define the cost’s scope or say whether it includes staff time and other project expenses.

Source: ThorstenMeyerAI.com