Glow Upthe brightest trick in FrontEnd.

2026
Personal experiment
Free Habit Tracking App on the App Store ↗

Interaction Design,
Agentic iOS Engineering

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Your current monitor can’t show the intended effect —
please come back to this on iPhone, MacBook Pro or other HDR capable screen to see the design intent.

You've probably seen those ultra-bright ads on LinkedIn and wondered how they do it. So did I.
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It turns out it's an HDR feature Apple showcased at WWDC 2021 ↗
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The brightness really grabs your attention. Instead of ads, I pointed it at the goals you want to achieve and the habits you want to build.

iPhone home screen with the medium and small Glow Up widgets on a dark wallpaper

Track directly on the widget,
no need to open the App.

App Store screenshot: the This Week grid in Glow Up
App Store screenshot: Glow Up widgets on the home screen
App Store screenshot: past weeks in Glow Up
App Store screenshot: the glow brightness slider in Glow Up settings

Above is a placeholder.
Try it for free on the App Store ↗

Agents work all night minutes at a time, around the clock, no person in it

  1. Each issue is planned, and split if complex, before an agent pulls in the issue backlog from GitHub. Claude writes the code through the night; Codex checks hourly for open issues.
  2. They test while building, on simulators — dozens of runs, no hardware — and on the debug phone, tethered hardware for agentic testing.
  3. Tested builds go back as a pull request, one branch per change. CI runs the suite on it, main merges when green, and a release builds for TestFlight.

Then round again, without me.

The glow leaves the machines here, because no gate can judge it.

Georg twice a day, 45 minutes — the large loop, the one I am in

  1. A release ships the latest build to my phone each morning and evening. TestFlight on my iPhone is where I interact with it on real hardware, 45 minutes before work and again in the evening.
  2. Georg reacts to what it is actually like, judging the glow on his own phone.
  3. Claude interviews me about the build, then writes the issues and the hands off to agents run.

Back into the night's work.

Agentically built
during 45 min slots before and after work.

I sit down with the latest build and react to it.
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A Claude instance interviews me and writes the GitHub issues.
While I am away multiple agents build, review each others code adversaially,
and push the next version to phone the morning.

If you're a designer using AI to build apps,
happy to talk shop or share insights.

Try it for free on the App Store ↗ or visit the public GitHub ↗