# Built4.Fun

> Small apps, made with care and a little wildness.

Built4.Fun is a small indie studio shipping polished reading and writing apps for people who still like slow reading, careful writing, and joyful daily tools. The philosophy is "made for joy, for ourselves and a few others" (为乐而造 —— 为自己和一小部分人，创造点美好).

The current homepage uses a warm editorial collage style: ivory paper background, large serif headline, moss/ochre/clay accents, flat navigation with one moss purchase pill, and a large generated paper-collage hero image that spans the body width instead of sitting in a framed card. The hero image moves gently during scroll-telling, is losslessly optimized as PNG, and intentionally contains no readable text or fake app UI; product facts are rendered as HTML.

## Products

### Jinshu
- **What**: Immersive multilingual EPUB reader with CEFR word levels, natural-voice sentence reading, and spaced-repetition vocabulary decks. Tuned for e-ink devices.
- **Platforms**: iOS, Android, E-Ink (Boox, etc.)
- **Languages**: EN / 中文 / 日本語 / 한국어
- **Site**: https://jinshu.built4.fun/
- **App Store**: https://apps.apple.com/app/id6759705710

### TeenyWriter (小小作家)
- **What**: A Chinese diary-writing companion for primary-school students. Kids speak about their day; the app rewrites it into a grade-appropriate diary, then guides them through copying it with photo-based feedback.
- **Platforms**: iOS
- **Pricing**: Free during early access
- **Site**: https://writer.built4.fun/
- **App Store**: https://apps.apple.com/app/id6761878294

## What we sell

| Product | Price | Where |
|---------|-------|-------|
| Jinshu Lifetime — E-Ink & Android | $29 USD one-time | https://jinshu.built4.fun/buy (Stripe) |
| Jinshu subscriptions | via App Store / Google Play | In-app |
| Jinshu Lifetime (CN market) | CNY via Taobao | Manual fulfillment |
| TeenyWriter | Free | App Store |

## Policies

- [Terms of Service](https://built4.fun/terms)
- [Privacy Policy](https://built4.fun/privacy)
- [Refund Policy](https://built4.fun/refund) — 7-day window for Stripe purchases
- [Contact](https://built4.fun/contact) — happinesz@gmail.com

## Detailed content

- [llms-full.txt](https://built4.fun/llms-full.txt): Full text of all pages including terms, privacy policy, and refund policy

## Links

- English: https://built4.fun/
- 中文: https://built4.fun/zh
- Feedback & support: https://support.built4.fun/