hanaco Weather – A poetic weather SNS from the OS Yamato project

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hanaco Weather is a minimalist social network where users post short, emotional weather thoughts and connect with others experiencing the same weather. No likes or followers (for now) — just gentle presence. Built entirely by a solo engineer, including the custom operating system it runs on: OS Yamato. What is OS Yamato? OS Yamato is a poetic, ephemerality-first operating system designed to let digital memories bloom and fade, like flowers in the wind. Features include: Diaries that bloom like seasonal flowers — and wither if forgotten Photos and videos that quietly disappear unless viewed again Chat with ambient seasonal effects and no pressure A soft, nature-inspired calendar with reusable schedule templates Wind Messages — time-delayed letters that arrive months later A 3D globe to see fleeting connections blossom around the world Each app within OS Yamato reflects a different way of embracing impermanence in the digital world. Learn more about the concept and philosophy: [YouTube – Write a diary, and a flower will bloom]( https://youtu.be/JrqwU_N5WBA?si=kZQAadNdBGipk6gz ) Try Hanaco Weather now: https://hanaco875.com #ShowHN #HanacoWeather #OSYamato #solodev #minimalism #digitalpoetry #webapp #ephemeral

Visit product View on Hacker NewsJul 30, 2025

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Indie HackersFits the IH revenue-focused audience · Strong signals: including · Missing: supports, reddit linkedin, podcasting

83%83% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.

best fitHighest predicted score across all platforms for this description.

Product HuntOn track for Day 1 leaderboard · Strong signals: user · Missing: mac, agents, macos

70%70% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

Hacker NewsStrong engagement from HN community · Strong signals: ide, io, including · Missing: https docs, excited, just released

55%55% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

TrustMRRFits verified-revenue profile · Strong signals: video, month, users · Missing: mobile apps, ios, personal

55%55% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

AppSumoStrong fit for a featured deal · Strong signals: users · Missing: plus, platform, intuitive

52%52% predicted probability of success on AppSumo, based on ML models trained on real launch data.

Acquire.comPre-revenue stage for this audience · Strong signals: arr · Missing: mrr, revenue, profit

15%15% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Strong signals: chat · Missing: web3, crypto, cryptocurrency

0%0% predicted probability of success on BetaList, based on ML models trained on real launch data.

Incorrect prediction on native model

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