SiYuan vs KNOWLY AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SiYuan
A privacy-focused personal knowledge management system that allows offline use and encrypted data synchronization. It combines blocks, outlines, and bidirectional links to enhance thinking processes.
- Privacy-first design
- Offline data storage
- End-to-end encrypted sync
- Block and outline fusion
- Bidirectional linking
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SiYuan is a privacy-first personal knowledge management system that supports complete offline use, as well as end-to-end encrypted data sync. Fuse blocks, outlines, and bidirectional links to refactor your thinking.
KNOWLY AI
This AI-powered tool helps you quickly understand and simplify complex information. It extracts key details from documents, articles, and conversations, providing clear explanations and insights for learning and productivity.
- Text scanning and smart extraction
- Clear summaries of content
- Easy-to-understand explanations
- Document comparison tools
- Fast insights for learning and organizing
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Knowly AI helps you scan, simplify, and understand information faster with AI. Built for everyday learning and productivity, Knowly turns complex content into clear insights you can actually use. From articles and notes to conversations and documents, Knowly helps you pull out what matters most.App offers auto-renewable subscriptions for premium access. Features include: • Text scanning and smart extraction • Clear summaries of articles and written content • Easy-to-understand explanations of difficult topics • Comparison tools for documents, images, and more • Fast insights for learning, reviewing, and organizing information Knowly is perfect for students, professionals, creators, and anyone who wants to save time and understand more. When information feels overwhelming, Knowly helps make it clear. Knowly AI offers auto-renewable subscriptions for premium access. Available subscriptions may include monthly and annual plans. Subscription length and pricing are shown clearly in the app before purchase. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. • Premium Monthly — $4.99 per month • Premium Annual — $39.99 per year https://scan-know-analyze.lovable.app/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ These subscriptions unlock premium features within the app. Users can manage or cancel their subscriptions in their Apple ID account settings after purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current billing period. Features include: • Text scanning and smart extraction • Clear summaries of articles and written content • Easy-to-understand explanations of difficult topics • Comparison tools for documents, images, and more • Fast insights for learning, reviewing, and organizing information Knowly is perfect for students, professionals, creators, and anyone who wants to save time and understand more.When information feels overwhelming, Knowly helps make it clear.
Screenshots
Verdict
The clearest difference is rating: KNOWLY AI at 5.0 against SiYuan's 3.9. KNOWLY AI also leads on review sentiment (100% vs 67%) and update cadence (every 3 days vs every 8 days). SiYuan's advantage is ratings volume (30 vs 1). On price, ads, in-app purchases and monetization model 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. SiYuan sells 2 one-off in-app purchases and KNOWLY AI sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
KNOWLY AI holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: SiYuan has 30 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of SiYuan's written reviews are positive against 100% of KNOWLY AI's.
SiYuan ships an update every 8 days, KNOWLY AI every 3 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | SiYuan | KNOWLY AI |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (30 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 30 — better | 1 |
| Update frequency | Every 8 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 440 MB | 18 MB |
| Age rating | 17+ | 17+ |
| Developer | Yunnan Liandi Technology Co., Ltd. | TEMNE ADAH HARDAWAY |
Customer experience
SiYuan
KNOWLY AI
In-app purchases
SiYuan
- PRO Features$79.99
- Subscription$188.99
KNOWLY AI
- Premium monthly3 Days trial$4.991 Month
- Premium annual3 Days trial$39.991 Year









