Knock AI vs 压图
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Knock AI
This AI-powered platform helps parents and children create personalized stories, picture books, and nursery rhymes. Users can choose themes and age tags to generate unique content, fostering creativity and documenting a child's growth journey.
- AI story and picture book generation
- AI nursery rhyme creation
- Customizable themes and age tags
- Free library of stories and rhymes
- Story collection for child's growth
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Knock AI - Children's Artificial Intelligence Partner 【 AI Playmate 】 A platform that uses AI to create and share stories, picture books, and nursery rhymes, allowing parents and children to easily create picture books and music with AI 【 AI Picture Books 】 Children and parents only need to choose their favorite themes, content, age tags, etc., and AI can weave entertaining picture book stories, opening the door to children's imaginative ideas 【AI Nursery Songs】Generate various styles of nursery rhymes such as pure music, lullabies, tongue twisters, etc. with just one click, supporting both Chinese and English, and inspiring children's creativity 【 Free Square 】 Massive picture books and nursery rhymes for free listening, saving the cost of selection and purchase 【 Customized Childhood 】 The 'Story Collection' function records every story and nursery rhyme created by parents for their children, documenting their growth journey
压图
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导入照片后一键压缩体积，支持多种压缩模式 预览对比和导出分享
Screenshots
Verdict
The clearest difference is ads: Knock AI at none against 压图's shown. 压图's advantage is update cadence (every 4 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Knock AI ships an update fortnightly, 压图 every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Knock AI | 压图 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 16 |
| Further details — not scored | ||
| Size | 47 MB | 16 MB |
| Age rating | 4+ | 17+ |
| Developer | 上海启扉绘梦智能科技有限公司 | 志雄 黄 |
In-app purchases
Knock AI
No in-app purchases
压图
No in-app purchases
