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Screenshot of "Show Just This (tap one bubble to show; the rest turns to gray shapes)"
Try it How to try & video Research report
Download (free)ZIP 6.7 MB

The ZIP contains the whole prototype. Attach it to Claude Code or Codex and ask: "Can you build an app like this?"

The ZIP is MIT licensed: free to modify, use for work and redistribute. No warranty.

Who it's forPeople who show or send screenshots of chat screens and the like to family, friends or coworkers

Show Just This (tap one bubble to show; the rest turns to gray shapes)

Published Nov 8, 2026 (Sun)

Visitor ratingRating pendingfrom the "I'd use it" and "Almost" buttons
Working prototype1 screenExplainer videoAny businessSales & outreach

The problem

Screenshots you want to share also show things you don't want shown, like names, unrelated messages and notifications. Painting over them one by one is a hassle, and you worry about missing one.

What it does

  • Tap the bubble to show once and every other bubble, name, icon, notification and time turns into a gray shape in 0.5 s (tap to add or remove)
  • Save the result as one flat PNG with no original image or layers inside, then re-read it to check every covered spot is the same single gray
  • For your own screenshot, draw a box around the part to show and everything outside is painted one color (no AI searching)

Research report (hypothesis validation)

Before building, we wrote down 5 hypotheses and checked them against news reports and official pages. Validated 2 · Partly / with conditions 3 · Invalidated 0. Read the research report

How this prototype was made

  • IdeaOriginal idea (ChatGPT × Codex)
  • PlanningClaude Claude came up with three ideas and picked one
    Claude Opus 5.5
  • Built byClaude Code (Claude Opus 5.5)

Stage

  • Hands-on prototypeYes (made-up data; the prototype itself makes no network calls)
  • Tested in real workNo

The English version is an AI translation of the Japanese original. The scenarios are set in Japan, and all names and data are made up.

Download this prototype as a ZIP and hand it to Claude Code (or Codex). It can build the real tool on top of it.

Each ZIP contains the working prototype, a manual, and builder-handoff.md: who it is for, what was checked, and the decisions to make before it touches real data. Attach the folder and say, for example: "Build a working version of this for my shop. Before you start, go through 'Decisions before making it real' with me."

kote2 Builder AI OS — an AI that understands your work, and thinks and builds with you (works with Claude Code and Codex)

Give this prototype’s ZIP to kote2 Builder AI OS and say "Continue building this prototype", and it can start from the prototype as its draft.

kote2 Builder AI OS is a tool for building things by chatting with Claude Code or Codex. It makes prototypes and shapes them together with you. Ask in English and it answers in English.

See kote2 Builder AI OS