Product Engineer · Open Source Maintainer Building tapflow · ⭐ 1.7K+ GitHub Stars
Seoul, Korea
Joined May 2026
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Our team built Tapflow — self-hosted iOS & Android simulator streaming that runs directly in the browser.
✅ Whole team tests from any browser (no Mac, no Xcode setup)
✅ Uses your existing Macs (data never leaves your infra)
✅ Perfect for enterprises & secure environments
tapflow (open-source project) is self-certified compliant with ISO/IEC 21031:2024 (SCI), verified by the Green Software Foundation badges.greensoftware.foundat…
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Woww...
Fable 5.5 its over for video and image models 🤯
THIS IS PURE CODE
one shotted this video holy shit , how this is more beautiful than ai video models
Two ways to check this yourself:
Ask: “Where did @karpathy go in 2026?” with web search and memory turned off. Only the new Fable knows the answer. Then give it the prompt.
Run the same prompt I used for the test (it’s in the screenshot) and see for yourself.
Don’t rely on Grok for basic reasoning like this. Grok doesn’t have up-to-date knowledge of niche stuff. Either join the community or run the test yourself.
Also, a knowledge cutoff doesn’t mean a model knows everything before that date. Sometimes a model doesn’t know about an event even if it happened before its cutoff. This test shows that too.
Run the same prompt on regular Opus 5.5 and the quality drops. On Fable 5.1 it’s worse.
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v0.30.0 passes launch arguments from a flow's `launchApp` or per-app defaults in `tapflow.config.json`. Env vars work on iOS only. v0.29.0 adds `tapflow flow run --include-tags` / `--exclude-tags`. Changelog: github.com/jo-duchan/tapflow…
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`connect_device` now returns a `watchUrl`: a read-only live view for up to four signed-in teammates, plus an action list. In the list, typing shows only character counts. Typed text is visible on screen, so avoid secrets.
dev.to: dev.to/joduchan/watch-an-ai-…
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Today, tapflow reached 1,000 GitHub stars! ⭐
It's been 5 months since I started building it. This might be a small number to some, but it means a lot to me.
There's still plenty to improve and build, but I'll keep working to make tapflow better.
Thanks to everyone who's supported the project!
tapflow is an open-source tool for testing iOS and Android apps directly in the browser.
GitHub: github.com/jo-duchan/tapflow
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tapflow is open source (MIT) and has reached 931 stars on GitHub!
github.com/jo-duchan/tapflow
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Upgrading to v0.26.1?
1. Everyone signs in once after upgrading.
2. Members who upload builds or change build status need the QA or Developer role.
3. Run `tapflow logs` on the relay host.
github.com/jo-duchan/tapflow…
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github.com/jo-duchan/tapflow…
github.com/jo-duchan/tapflow
Tunnel agents need an agent token; flows/MCP need a view token. If you ran `tailscale serve 4000`: `tailscale serve reset`, then `tailscale serve --bg 4001`.
#OpenSource #Android
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