# KinetStudy — 拍照批改，错题自动进错题本

> 拍照批改，错题自动进错题本 (iPhone/iPad app by 俊杰 沈.)

- Source: https://appshunter.io/ios/app/kinetstudy/id6797004663 (this page in markdown: same URL + `.md`)
- Developer: [俊杰 沈](https://appshunter.io/developer/6773175292)
- Category: Utilities, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 15.6 · 8 MB
- Languages: American English
- Released: 2026-08-13
- Data updated: 2026-10-07
- User reviews in markdown: https://appshunter.io/ios/app/kinetstudy/id6797004663/reviews.md

## What is KinetStudy?

KinetStudy is an AI homework-grading assistant designed for parents. Take a photo of your child's homework, and AI reviews it question by question with explanations — wrong answers are automatically added to a mistake notebook, organized by subject, ready to redo anytime.

【Key Features】

• Photo Grading
Snap a photo of homework and AI identifies each question, marking it right or wrong with explanations and knowledge-point context. Covers the main elementary school subjects: Chinese, Math, and English.

• Mistakes Auto-Saved to the Notebook
Wrong answers no longer stay scattered on worksheets. Grading and archiving happen in one step — mistakes are automatically organized by subject and knowledge point for easy review later.

• Redo Anytime
Mistakes aren't just collected for show. Redo them whenever you like: answer correctly and they leave the notebook; get them wrong again and they stay for another round of practice.

• Follow-up Questions
Curious about a specific question? Keep asking follow-ups based on the same photo — like discussing with a teacher why an answer works the way it does.

• AI Tutor
Based on the pattern of your child's mistakes, the AI tutor highlights weak areas and suggests what to practice next. It doesn't replace real tutoring — but it helps parents stop guessing.

• Learning Reports for Parents
Review your child's practice by week or month: which knowledge points keep causing trouble, which have been mastered, and whether practice is consistent. See it at a glance instead of guessing from the homework pile.

【Privacy Design】

• Photos and homework data are sent directly from your device to the AI provider you configure. The developer never stores, forwards, or analyzes them.
• BYO Key supported: connect your own AI provider key — you stay in full control of where your data goes.
• All practice records and the mistake notebook are stored locally on your device. Nothing is uploaded to the developer's servers.

【Works Offline】

• The mistake notebook, redo, and practice features work fully offline — open the app and start.
• Only photo grading and the AI tutor require an internet connection to call AI services (with your own key, free).

【Subscription】

• Free: photo grading, AI tutor chat, mistake notebook, redo, practice, and parent learning reports. Online AI features are powered by your own provider key (BYO Key) and are free to use.
• Pro: unlocks on-device learning analysis — AI mistake analysis, personalized study suggestions, and weak-area tracking. These analyses run locally on your device and do not depend on any AI service.

Subscriptions are billed through your Apple ID and can be canceled anytime in Settings → Subscriptions. No refunds within an active billing period, as handled by Apple's policy.

【Please Note】

• AI grading results are for reference only and do not constitute professional educational advice.
• Real learning comes from daily practice. This tool saves you time, but it can't replace a parent's companionship.

【Feedback】

• Email: phinn@outlook.com

【Subscription Terms】
• Privacy Policy: https://phinn.github.io/KinetStudy/privacy.html
• Terms of Use: https://phinn.github.io/KinetStudy/terms.html
• Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/


## Version history (last 3 releases)

### 1.2 — 2026-09-27

This update fixes known issues and improves the overall experience.

### 1.1 — 2026-09-01

Our biggest update yet — the mistake notebook evolves from a record tool into a complete learning loop.

NEW:
• Weekly report as a shareable image: 7-day practice chart, accuracy by subject, badges, weekly progress
• Smart practice recommendations on Home, powered by your child's ability profile
• Spaced repetition loop: review due items, check in, and advance automatically
• AI tutor now answers "how was this week?" with real practice data
• AI quiz challenge: generates questions from textbook content, with instant grading

IMPROVED:
• Mistake notebook: overview stats, subject filters with counts, stubborn items first, overdue badges
• Mistake detail page now offers redo / ask AI / delete
• Duplicate imports merged automatically
• Stats page: locked badge progress, ability growth curves
• Daily study reminder (local notification), auto-muted once daily goal is met

FIXED:
• Real-time voice: long replies no longer stall mid-answer; resumes after phone calls; stable on weak networks

### 1.0 — 2026-08-13

No release notes.

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## More apps by 俊杰 沈

- [KinetFit](https://appshunter.io/ios/app/kinetfit/id6773755689)
- [KinetMorning](https://appshunter.io/ios/app/kinetmorning/id6779978181)
- [KinetSoul](https://appshunter.io/ios/app/kinetsoul/id6780600464)
- [KinetTask](https://appshunter.io/ios/app/kinettask/id6780944289)
- [KinetBrief](https://appshunter.io/ios/app/kinetbrief/id6782778566)

All apps by 俊杰 沈: https://appshunter.io/developer/6773175292

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-07.*