# TeenyWriter (小小作家)

> 小学生中文日记写作伴侣 — A Chinese diary-writing companion for primary school students.

TeenyWriter helps kids (grades 1–6) practice Chinese diary writing through a four-step loop: voice recording, AI rewriting, handwriting on grid paper, and photo-based grading. Free, no account required, privacy-first.

Made by Built4.Fun (为乐而造) — a small studio making small things for joy.

Website: https://writer.built4.fun/
App Store: https://apps.apple.com/app/id6761878294
Contact: happinesz+teenywriter@gmail.com
Studio: https://built4.fun/

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## How it works

1. **Voice recording**: Kids hold the mic button and talk about their day
2. **AI rewriting**: The app rewrites their words into a grade-appropriate diary entry, preserving original ideas and explaining all changes
3. **Handwriting**: Kids copy the diary onto a real grid notebook, guided by an on-screen template
4. **Photo grading**: Take a photo of the handwritten page; AI reads the handwriting and gives concrete, encouraging feedback

## Key features

- Completely free — no ads, no tracking, no account, no subscription, no in-app purchases
- Offline-first: voice recognition runs entirely on-device (Apple Speech framework)
- Recordings never leave the phone; audio is deleted after transcription by default
- Photos: only a compressed 512px copy (EXIF stripped) is sent for cloud grading, then discarded
- Parent zone protected by a two-digit addition problem
- Supports grades 1–6 with age-appropriate vocabulary and sentence structure
- Optional offline AI mode (lower quality but zero network dependency)

## Platform

- iOS / iPadOS only
- App Store: https://apps.apple.com/app/id6761878294

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## Support & FAQ

Contact: happinesz+teenywriter@gmail.com (48-hour response)

### "Generating diary" spinner won't stop?

AI rewriting needs internet. Check Wi-Fi/cellular, go back to home, and tap "Generate today's diary" again. Or enable offline mode in Parent Settings > Cloud Off.

### "This doesn't look like today's diary" after taking a photo?

The AI detected a mismatch between the photo and the current diary. Common causes: photographed a different page, only captured part of the page, or poor lighting/glare. Tap "Take another photo" to retry without losing the diary.

### Can kids write in their own words instead of copying exactly?

Yes, encouraged. TeenyWriter detects whether the child copied or paraphrased. Writing the same topic in their own words earns positive feedback on their original expression, plus one gentle suggestion.

### How to enter the parent zone?

Tap the gear icon (top-left on home screen). Answer a two-digit addition problem (e.g., "36 + 47 = ?") to enter — designed so young children can't easily bypass it.

### Are voice recordings uploaded?

Never. Speech recognition runs entirely on-device via Apple's Speech framework. The audio file never leaves the phone. By default, recordings are deleted after diary generation succeeds. Retention can be changed in Parent Settings > Recording Retention (options: immediate delete, 7 days, 30 days, keep forever).

### Are photos uploaded?

Only a compressed copy (max 512px, JPEG 80%, EXIF metadata including GPS stripped) is sent for OCR and grading, then immediately discarded on the server. The original 1280px copy stays on the phone only. Cloud grading can be disabled entirely in Parent Settings > Cloud Off.

### Can I change the child's grade level?

Yes. Enter parent zone > Basic Info > select new grade. Next diary will use the new grade's vocabulary and sentence patterns.

### Can I export or print diaries?

Not yet — viewing history is in-app only. Export/print coming in a future update. Email us if you need this urgently.

### Forgot the parent zone math answer?

The problem is randomly generated each time. If you get it wrong, a new problem appears. All problems are two-digit addition — take your time.

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## Privacy Policy (隐私政策)

Effective date: April 17, 2026

This privacy policy is written for parents of primary school students. Core principles: offline-first, no identity collection, data deleted after use.

### Who we are

TeenyWriter is an iPhone/iPad app helping primary school students improve Chinese writing through voice dictation, AI rewriting, handwriting practice, and photo evaluation. Developer: Sofish.

### What we collect

Only the minimum needed for "rewriting" and "photo grading":

- **Voice transcription text**: The child's dictated words (no identity info beyond nickname and grade) — sent to cloud for AI rewriting, discarded after use
- **Compressed photo copy**: Max 512px long edge, JPEG 80%, EXIF metadata (including GPS) stripped — sent to cloud for grading, discarded after use

### What we do NOT collect

- Child's real name, birthday, phone number, home address
- Device ID, advertising ID, IDFA
- Location, contacts, calendar, other photo library content
- Behavioral tracking, user profiling, advertising
- No third-party analytics or crash reporting SDKs whatsoever
- Original .m4a recording files (never uploaded; deleted after transcription by default)
- Original 1280px photo copies (local only, never uploaded)

### Where data is stored

| Data | Location | Uploaded? |
|------|----------|-----------|
| Voice recording (.m4a) | Device only, deleted after generation by default | Never |
| Transcribed text | Device + cloud during rewriting | During rewriting only |
| Original handwriting photo (1280px) | Device only | Never |
| Compressed photo (512px) | Cloud during grading | During grading only |
| Nickname, grade | Device only | Never |
| Diary history | Device only | Never |

### Recording retention

Default: deleted immediately after diary generation succeeds. Parents can change in Parent Settings > Recording Retention:
- Delete after generation (default)
- Keep 7 days
- Keep 30 days
- Keep forever

### Third-party services

- **Apple Speech framework**: On-device speech recognition. Audio never leaves device.
- **Cloud AI** (for rewriting and photo grading): Text and compressed photos sent, processed, immediately discarded. No logging, no retention, no model training.

### Children's privacy

This app is designed for children ages 6–12 with parental involvement. We comply with children's privacy protection principles. We do not knowingly collect personal information from children beyond what is described above.

### Data deletion

All cloud-processed data is discarded immediately after use. Local data can be deleted by uninstalling the app.

### Contact

Privacy questions: happinesz+teenywriter@gmail.com

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## Terms of Service (使用条款)

Effective date: April 17, 2026

### 1. Service description

TeenyWriter is a Chinese diary writing app for grades 1–6. Core flow: voice dictation → AI rewriting → handwriting on grid paper → photo evaluation. Completely free — no account, no subscription, no in-app purchases, no ads.

### 2. User age and parental consent

Target users: ages 6–12. We expect parents to download and assist. Parents or guardians must agree to these terms for children under 13.

### 3. Accounts

No registration required. No phone number or email needed. All data stored locally on device.

### 4. Content and intellectual property

The child's original words, AI-rewritten diary text, and handwritten photos — copyright belongs to the user (child and parents). We claim no rights and do not use this content for model training. The app itself (icons, UI, copy, code) is copyrighted by Sofish.

### 5. Acceptable use

Do not: reverse engineer the app, violate laws, bypass the parent zone gate or security mechanisms, generate/distribute illegal or harmful content, use for commercial teaching without authorization.

### 6. AI rewriting and grading

AI rewriting is an aid ("making original words more like a good diary"), not a substitute for thinking. Handwriting recognition and grading may contain errors — for reference only, not formal educational assessment. No guarantee of specific learning outcomes.

### 7. Privacy

See Privacy Policy above. Summary: recordings never uploaded, text and compressed photos discarded after processing, no tracking, no ads.

### 8. Disclaimers

Provided "as is" without warranties. We do not guarantee accuracy of AI rewriting, handwriting recognition, or grading suggestions.

### 9. Limitation of liability

Not liable for indirect, incidental, special, consequential, or punitive damages to the maximum extent permitted by law.

### 10. Service changes

We may update the app or discontinue features. We reserve the right to suspend cloud services for AI rewriting and grading when necessary.

### 11. Governing law

Laws of the People's Republic of China.

### 12. Contact

Terms questions: happinesz+teenywriter@gmail.com