Koi Launch

1. Listing
Your listing scores a 4/10 for me. Add more detail to what to test so testers know exactly what to do. I tested first on my phone (your example shows a phone, so that's where my mind went), then on my computer.

2. First impressions – website

• "Build and publish apps with ChatGPT or Claude" – my first thought was "can't I already do that myself?" But you show the end result right away: how it changes my life, then how. That works.
• Header: too many options. How It Works, Features and Examples are on the same page, so remove them and keep Pricing, Connect AI and Guides.
• Mobile: the slider doesn't fully fit the screen. Small thing.
• Lots of text. Assume people don't read it. I didn't either.
• Examples: I can't click them, so they're just designs. Since building is free, show real public apps people made instead.

3. Connecting to Claude

• Claude warns: "This connector was suggested by an external link..." I added it anyway, but was a bit skeptical. Trust is a big thing, especially in beta. Find a way to build more of it.
• Sign-in with Google, email or Telegram – every option is a good option. 👍
• Your logo in Claude differs from your website logo. Make them match.

4. The biggest gap: after connecting
The most important fix so far.

• After signing up and connecting, there's no clear next step. The site says "Tap a sample" – where?
• The site keeps asking me to "add to Claude" when I already did. Annoying.
• Once I'm logged in, the homepage should change.
• The Install button came out of nowhere and worried me a bit. It's a PWA, which is fine, but explain it.

5. ✅ Build own app (what you asked to test)
I went to Create, typed "An app that puts a daily quote on my home screen" and sent it to Claude.

• Claude asked three clarifying questions. Good.
• It said upfront that live home-screen widgets aren't possible and offered the closest version: opens straight to today's quote, saved as a home-screen icon. Honest and clear.
• Small one: it assumed I meant a phone. I wanted Windows.
• It feels just like using Claude normally, which makes it super easy.

6. What I love

• It works inside regular Claude. No Claude Code needed. This massively lowers the barrier. People who know nothing about tech can now make apps.
• Storage is included. That's the whole thing. Everyone says "anyone can build apps," then they hit the database step and quit. With Koi Launch, literally anyone can.
• Today's Pick on Discover, changing daily – nice.
• Pricing: $4.99 is nothing for this. Very reasonable.
• I can really see the vision. 🚀

7. Things to keep in mind

• Apps are basic; advanced apps get tricky. Fine for your audience.
• Most apps look alike, like standard vibe-coded apps. Not a problem yet.
• Unclear when the paid plan kicks in (e.g. adding AI). Say it upfront.

8. Claude's take (builder side)
I asked Claude what it thought of the tools it used:

The good:

• Upfront guide is excellent. It explained what works and what doesn't before coding, so the app worked on the first run.
• Saving data just works, already loaded on open.
• The testing tool is the standout. Simulated phone with errors, contrast, tap targets and scrolling checks. Better than many paid tools.
• Publishing is clean: link card, version history, rollback, visibility settings.

Where it fell short:

• Automated checks felt broken. Kept saying "still running" or "checked an older draft" about eight times. No estimate, no notification.
• Test isolation is unclear. Tests seemed to share data, so three "failed" on a non-issue.
• No way to bring users back. No notifications or proper home-screen setup – the core loop for daily apps.
• Telegram roots show (`TgApp`, `tg-` settings). Reads like a Telegram tool that grew a website.
• Non-commercial only. The name "Launch" suggests launching a product, and you can't.

9. Positioning
You market it as "want to build an app? Add us to Claude." Also try "want to make Claude better? Add us to Claude."

Bottom line
Really good. It just works and genuinely lets anyone build apps. Close the gap after connecting, build more trust, and you've got something. 👏

1. I started with my browser on my computer, Zen Browser; that's how I connected Koi to my Claude, and I prompted Claude from my laptop at first. Then I proceded to the Android app, and I saw the app there. I also tried creating a different app from my phone entirely
2. My first confusing screen was when I created an app on my laptop and tried to open it on my phone; I clicked on it and just saw "draft" with no immediate way to test it or publish it from there. I had to go back to Claude to prompt it to publish the app.
3. I tested the app Roach: Not today, and my network was originally dodgy, so the page didn't load, but sliding down to refresh didn't work, and in the more menu there's no refresh there either.
4. It worked perfectly with Claude; the mobile app is also nice, especially with the templates

1. Device/browser and AI assistant used:

Mac, Chrome, ChatGPT (Free plan).

2. First confusing screen:

After connecting Koi Launch to ChatGPT, it wasn't immediately obvious how to generate the publish link; I had to explicitly prompt ChatGPT to publish the app after testing the in-chat preview, but that worked tho :)

3. Expected vs actual behavior:

Expected to build a study checklist app, make UI edits, and publish a working web link with good storage. Actual behavior matched well: the initial preview took ~1.5 minutes to build, my follow-up edit (larger checkboxes and a "Clear completed" button) applied cleanly, and the published web app at launch.koiswarm.com/app/ saved my progress for my tasks

4. Screenshots/errors:

No runtime or build errors encountered during previewing, updating, or publishing.

5. Was the next step after connecting to AI assistant clear?

Yeah, it was mostly straightfoward. Koi Launch filled the prompt inside ChatGPT so starting the build was easy, though a visible "Publish" button inside the preview frame would make moving from preview to live link much clearer than typing a prompt.

6. Does pricing sound fair? If not, how much would be fair?

Yes, the pricing is very fair. Having a generous free tier (up to 100 apps and 300 MB storage) to build, publish, and share apps is great, and $4.99/month ($49.99/year) for the Go plan with built-in AI features and 1 GB storage is not bad.

7. Would you use the app again, and what would stop you?

Yes, I would use it again for quick personalized study trackers, checklists, and shareable mini-tools. What would stop me for larger projects is the lack of custom domains, payments/monetization, or a full custom backend for device syncing.

8. Anything you wanna tell me:

Your app definitely works alright. It makes creating a personalized, functioning app pretty easy and publishing is also simple. The UI is simple yet clean. Nice work on building this!

Setup: Desktop Chrome, ChatGPT (free plan). Idea: "A daily water intake tracker: tap a glass to log 250ml, set a daily goal, and see a 7-day history."

What worked

• Create page → ChatGPT icon opened a new ChatGPT chat with my idea plus a quality bar already written. Nice touch.
• ChatGPT asked 3 simple multiple-choice questions (goal, light/dark, history style) before building.
• It built, tested and published the app on its own, then gave me a launch.koiswarm.com/a/... link with Copy link and version history.
• The finished app works: a "How it works" intro, +250 ml tap updates the total and progress bar instantly with a toast, a delete confirmation ("Keep entry" / "Delete entry"), editable goal, 7-day list. It looks polished, way better than I expected from one prompt.

First confusing screen
Right after login a "Connect your AI assistant" popup covers the Discover page before I've seen anything. After connecting ChatGPT and coming back, nothing told me what to do next. I landed on Discover again with no "Now go to Create" hint.

Expected vs actual

• Build time: about 7 minutes. Most of that ChatGPT sat on "Getting Koi Launch Platform Guide" with no progress shown. I wasn't sure it was still working. A progress or time estimate would help.
• I asked for "all text in English", but every entry in the app uses the Chinese character 滴 as its icon instead of a water drop.
• The 3 sample entries are all dated today, so they count toward today's progress (it opened at 750 ml / 38%) and the 7-day history shows 0 ml for every past day. Samples spread over past days would actually demo the history, and a fresh user wouldn't start with fake progress.
• In ChatGPT the published card was followed by an unrelated App Store preview ("HydroFlow" on apps.apple.com). Confusing, I thought my app had been put on the App Store. Probably ChatGPT's link preview, but worth checking how the publish message is worded.
• The Create page has no visible Send button, only small ChatGPT/Claude icons. It took me a moment to realise those are the send buttons.

Pricing: I didn't hit any paywall or pricing screen during this flow, so I can't judge it yet. Say upfront what's free and when paid kicks in.

First impressions

The hero gets it across fast: "Build and publish apps with ChatGPT or Claude", with two clear buttons. The phone mockup with sample apps (Split the bill, Budget) shows the end result straight away.
"Start free" in the header doesn't go to a signup page. It just scrolls down to the same Add to Claude / Add to ChatGPT section. I expected an account screen.
The examples carousel (Chemistry quiz, 2048, Fridge chef) is only images. You already have a Community of real apps inside the product, so link to those instead.
Signup

The login screen is clean: Google, Telegram or email, plus "New here? Pick any option — your free account is created right away."
The landing page is light and the app is dark, which feels like jumping to a different product.
Inside the app

Discover/Community is a nice touch: 25 apps, a "Today's Pick" (Red Flag or Green?) and categories.
Many community apps are in Japanese or Uzbek, and there's no language filter. As an English user, half of "Study" and "Money & life" wasn't usable for me.
Create shows "What do you want to make?" with sample cards and a prompt bar. Sending it hands you off to ChatGPT or Claude. That's the core idea, but nothing on the screen says you'll leave Koi. One line like "This opens Claude with your idea typed in" would fix it.
The Install button (PWA) sits top-right with no explanation of what it installs.
Bottom line The idea is strong and the login is painless. The gap is right after signup: say clearly where building happens, and make the community browsable in my language.