🔍 Read the full analysis: Inside Gewerkton’s AI-Agent-Powered Two-Day Relaunch on ThorstenMeyerAI.com

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Gewerkton, a construction-site documentation tool developed by Thorsten Meyer in Bavaria, says AI coding agents carried out a redesign across its web app, iPhone and Android apps, Studio, 26 icons and 529-page website on Oct. 2 and 3, 2026. The company calls the design HORIZON and says the work was performed from written plans, with Meyer approving the plans, reviewing results and authorizing releases.

The relaunch moved 281 hard-coded web-app colors into design tokens, leaving 11 stated exceptions, and restyled 47 cards. The phone app reached version 0.5.0 in the new look. Gewerkton says the Studio now supports the design in light and dark modes, while its 26 icons were rendered in Blender in cobalt and navy. The website’s 529 pages were updated across 40 languages, and 1,583 files were uploaded without an error, according to the company.

The account also lists 228 AI film runs for five regions, including 222 runs with their own regional version, and eight help videos. Gewerkton says the 228 runs describe production activity, not 228 distinct finished films. The company inspected the middle frame of each of 157 mirrored films and watched reworked films again at 10%, 50% and 90% of their length.

The two-day description has a qualification: an interim design draft from Sept. 26 was used as a starting point. The company says the two days refer to execution from approved plan to live website, not the entire design process. Gewerkton also disclosed that it is built by its publisher, ThorstenMeyerAI.com, which says it reports what it learns from developing the product.

How Human Review Shaped the Relaunch

The account offers a specific example of how a small product team says it used coding agents for a broad release without giving them unrestricted authority. Agents worked on a separate code branch from written plans; Meyer approved the plan and released each part after reviewing the results. The company says film runs depicting its apps and paid reruns required explicit human approval. Apple’s developer agreement also required an action only Meyer could take before the iPhone build could proceed.

That division matters because the relaunch affected several customer-facing surfaces at once, including mobile interfaces and regional marketing films. Gewerkton’s own account shows that passing tests did not catch every issue: a dark-mode icon problem was found by visual review, and automated color masking missed red details in some films. The report is a company account, not an independent evaluation of agent performance, but it documents both the release controls and the limits the team encountered.

The company reports that the cobalt color initially measured 4.38:1 contrast against a light background, below its stated 4.5:1 working standard based on WCAG 2.1 AA. It darkened the color to 4.80:1 before release. That adjustment illustrates how a design decision was changed rather than shipped unchanged when it did not meet the team’s stated threshold.

A Prepared Design, Then Two Days of Execution

Gewerkton says the process began with a written plan listing open decisions, options and recommendations. Meyer approved the recommendations, after which agents worked in a separate copy of the code on their own branch. The team says deviations from the plan were recorded and the more conservative option was chosen where the plan did not hold up. The company describes the agents as Codex and Claude, directed by Meyer.

Testing covered multiple screen sizes and languages. The web app was reviewed across 200 views in English, German, Japanese and Hindi at widths of 390, 834 and 1,440 pixels, in light and dark modes. The company reports no overflow or console errors in that inspection. The phone app recorded 853 of 853 tests passing, and the Studio 2,158 of 2,158. The website passed seven test suites, then was checked in a browser across three widths and five regions; the live site was tested again after upload.

Those results do not mean every check was clean. Gewerkton says eight web-app tests failed across seven files: six files had the same failures on the main branch, and one failure depended on test order and passed when run alone. The company says the redesign neither caused nor fixed those issues. It also reports pausing film production after round nine, when 208 of 228 runs were complete and 38% of jobs were failing; the 76 failed jobs were not billed.

““Gewerkton is built by our publisher — we build it ourselves and write down what we learn.””

— ThorstenMeyerAI.com, Gewerkton’s publisher and developer

What the Company Has Not Independently Verified

The figures and descriptions in the relaunch account come from Gewerkton and have not been independently verified in the supplied material. It does not provide a breakdown of how much agent work was generated or changed by people, how long preparation took before Oct. 2, or a comparable measure of time and cost for a human-led redesign. The reported test totals also do not establish how the product performs in everyday use.

The source material gives an actual film-project cost figure only in incomplete form: it ends at “about 134 dollars actual” without stating the full cost basis or what the amount covers. No broader project cost, savings estimate or return on investment can be established from that fragment. It is also unclear when the 10 regional film versions with leftover red will be replaced; the account says they temporarily used the European cut, and that nine were later reshot and visually checked.

The company says five major findings from an Android test on a Pixel 10a were not release blockers and are scheduled for version 0.5.1. It identifies one example: a camera-screen button breaks a German cancellation word across two lines after larger type and padding were introduced. The supplied account does not list all five findings or give a release date for the update.

Android Fixes and Film Reshoots

Gewerkton says the five major findings from its Pixel 10a Android test are scheduled for version 0.5.1; it has not supplied a release date in the source material. Readers and customers can look for the update to see whether the button-wrapping issue and the other reported findings are addressed.

The company also says nine regional film runs were later reshot with Meyer’s approval and passed visual review. The timing and status of the remaining regional versions are not fully specified. Any further account of the relaunch would need to clarify those outstanding versions, provide the complete film-cost figure and distinguish the work completed during the two execution days from earlier design preparation.

Key Questions

What did Gewerkton relaunch on Oct. 2–3?

Gewerkton says it applied its HORIZON design to its web app, iPhone and Android apps, Studio, 26 icons and 529-page website, which spans 40 languages. The company also produced AI film runs for five regions.

Does “two-day relaunch” mean the design started on Oct. 2?

No. Gewerkton says an interim design draft from Sept. 26 was used. The two days refer to execution from the approved plan through the live website.

Did AI agents make all decisions and release the work?

According to the company, agents implemented the work from written plans, but Thorsten Meyer approved the plan, reviewed results and released each part. Some actions, including accepting Apple’s developer agreement and approving paid film reruns, required his explicit action.

Were all tests and production runs successful?

No. Gewerkton reports eight web-app test failures, which it says were not caused by the redesign, and a period when 38% of film jobs were failing. It also describes visual defects found by human review. The company says the 76 failed film jobs were not billed.

What remains to be fixed?

The company says five major findings from a Pixel 10a Android test are scheduled for version 0.5.1, but has not provided a release date or listed all five. The status of some regional film versions also remains unclear.

Source: ThorstenMeyerAI.com