SiYuan vs LifeDue
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.
LifeDue
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LifeDue is a reminder app for managing important due dates for your home and family in one place. You can register payment deadlines, renewal procedures, school and daily life schedules, and household tasks that are easy to forget, then review and manage them together with your family. For each due date, you can organize notes and checklist items, making it easier to keep track of what needs to be done and by when. LifeDue is designed to make small household procedures and schedules visible, helping reduce forgotten or missed tasks. Main features: ・Register household due dates and schedules ・Manage notes for each due date ・Manage checklists ・Manage items by family member or target person ・Reminder notifications ・Data management through login ・Account deletion support LifeDue is a simple life management app that helps you remember your family’s important due dates. Terms of Use(Apple Standard License Agreement): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lifedue.com/privacy
Screenshots
Verdict
SiYuan and LifeDue are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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 LifeDue sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
SiYuan ships an update every 8 days, LifeDue every 5 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.
| Parameter | SiYuan | LifeDue |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (30 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 30 — better | — |
| Update frequency | Every 8 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 440 MB | 31 MB |
| Age rating | 17+ | 4+ |
| Developer | Yunnan Liandi Technology Co., Ltd. | YOULI YANG |
In-app purchases
SiYuan
- PRO Features$79.99
- Subscription$188.99
LifeDue
- LifeDue Plus$2.991 Month
- ifeDue Family Pro$4.991 Month









