Read the full analysis: How Gewerkton Put AI Agents To Work On A Complete Visual Relaunch on ThorstenMeyerAI.com
TL;DR
Gewerkton says AI coding agents carried out the implementation of a visual relaunch across its web app, phone apps, Studio, icons and multilingual website on Oct. 2–3, 2026. Founder Thorsten Meyer approved the plans and releases; testing and visual reviews found issues that required fixes, while some Android findings are scheduled for a later version.
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Gewerkton, a construction-site documentation tool, says it replaced the visual design of its web app, iPhone and Android apps, Studio, icons and multilingual website on Oct. 2–3, 2026, using AI coding agents for implementation. Founder Thorsten Meyer approved the written plans, reviewed results and released each part, making the launch a case study in how the company says it uses agents under human oversight, as detailed in the original analysis.
The relaunch introduced the HORIZON design across the product suite. Gewerkton reports that 281 hard-coded web-app colour values were moved to design tokens, with 11 exceptions retained, and 47 cards were restyled. Phone app version 0.5.0 received 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. Gewerkton says it uploaded 1,583 files without an error and added an opening section featuring real product screens. Its film work included 228 production runs for five regions, 222 with regional versions, plus eight help videos. The company qualifies its two-day description: an interim design draft dated Sept. 26 was used, so the work began from an existing proposal rather than a blank slate.
According to the account published by ThorstenMeyerAI.com, agents worked from written plans in a separate code copy and branch. Meyer approved the plan and released each stage; no agent could merge or deliver work without his release. Films showing the redesigned interfaces were held until he had approved the screens, and paid film reruns also required his explicit approval. Apple’s license agreement was another human-only gate: the iPhone build remained blocked until Meyer accepted the latest agreement.
Human Gates in an Agent-Led Relaunch
The account illustrates a practical division of work: agents handled implementation, while the founder retained authority over plans, visual judgments and releases. That distinction matters to product teams weighing agent-assisted development. The reported speed depends not only on code generation, but also on a prepared design, staged work, automated checks and a person able to stop or revise the process.
The relaunch also shows why passing tests is not the same as a finished product. Gewerkton says its automated checks caught some issues, but visual inspection found others, including white icon tiles that obscured nearby labels in dark mode. Film recolouring likewise required human review after an automated mask missed red details in shadows and warm lighting. The company’s own account therefore points to human review as part of delivery, not a final formality.
These are company-reported results from a project built by the publisher of the account, not an independent evaluation of AI-agent productivity. The figures describe Gewerkton’s particular workflow and do not establish how quickly or reliably another team could complete a comparable redesign.
From Draft Design to Release
Gewerkton is built in Iffeldorf, Bavaria, by Meyer, who says he directs a fleet of coding agents including Codex and Claude. For this relaunch, the agents implemented changes from plans listing open decisions, options and recommendations. Meyer approved the recommendations and inspected results before release. When an issue departed from the plan, the team logged the deviation and chose the more conservative option.
One example involved accessibility. Gewerkton says the planned cobalt reached a contrast ratio of 4.38:1 against the light background, below the 4.5:1 working threshold it uses under WCAG 2.1 AA. The colour was darkened to 4.80:1. The firm’s reported checks included 200 web-app 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. Website test suites passed 7 of 7, with browser checks across three widths and five regions.
There were qualifications behind those results. Eight web-app tests failed in seven files; Gewerkton says six files also fail on the main branch, while another failure depends on test order and passes when run alone. The company says the redesign neither caused nor fixed those failures. For films, staff inspected the middle frame of each of 157 mirrored films and reviewed reworked films at 10%, 50% and 90% of their duration.
“The two days cover the execution, from the approved plan to the live website.”
— Gewerkton, in the project account published by ThorstenMeyerAI.com
Remaining Fixes and Open Questions
The account does not provide an independently verified measure of time saved, a comparison with a human-only redesign, or a full cost breakdown for the broader relaunch. It gives a film-project figure of about $134 in actual costs, but the available material does not establish whether that amount covers all film-related work or the wider redesign. It also does not describe how the coding-agent work was divided among Codex, Claude and human contributors.
Gewerkton says five major findings from an Android test on a Pixel 10a were not blockers and are scheduled for version 0.5.1. One described issue involved camera-screen buttons breaking words across lines after the redesign increased type size and padding; the German word for “cancel” wraps onto two lines. The account does not give details of the other four findings or a release date for the update.
Film production also encountered failures: work paused after the ninth round when 38% of jobs were failing, with 208 of 228 runs completed at that point. Gewerkton says the 76 failed jobs were not billed. It reports that ten regional versions with leftover red were temporarily switched to the European cut and that nine were later reshot with Meyer’s approval, but the account does not fully specify the status of every film version.
Android Fixes and Film Follow-Up
The next stated product milestone is phone app version 0.5.1, where Gewerkton plans to address all five major findings from its Pixel 10a test. The company has not provided a release date in the material available for this report.
For the films, the account says nine reruns were approved, completed and passed visual review after regional cuts with leftover red were temporarily replaced by the European version. It does not say whether further regional versions will be reviewed or rerun. Gewerkton’s stated process leaves paid reruns subject to Meyer’s approval, so any additional work would remain under that release gate.
The company’s description presents the relaunch as a completed deployment, while some fixes and film details remain open. Further reporting would be needed to verify the project’s cost and speed against a comparable workflow and to establish whether the planned app fixes and any remaining film revisions have shipped.
Key Questions
What did Gewerkton relaunch?
Gewerkton applied its HORIZON design to the web app, iPhone and Android apps, Studio, all 26 icons and a website with 529 pages in 40 languages. The company says the work took place on Oct. 2–3, 2026, using a design draft prepared on Sept. 26.
What role did AI agents play?
Gewerkton says agents including Codex and Claude implemented changes from written plans in a separate code branch. Founder Thorsten Meyer approved the plan, reviewed results and released each part; the agents could not independently merge or deliver work.
Did the redesign pass all tests?
No. The company reports passing results for the phone app, Studio and website checks, but says eight web-app tests failed. It attributes those failures to existing main-branch issues or test-order dependence, rather than the redesign. Visual checks also found problems automated tests missed.
What problems remain?
Gewerkton says five major Android test findings are planned for version 0.5.1, including camera-screen buttons that break words across lines. The source account does not provide a release date or detail the other four findings.
Source: ThorstenMeyerAI.com