# SiYuan vs LifeDue

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.

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.

## The numbers

| Metric | SiYuan | LifeDue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (30 ratings)](https://appshunter.io/ios/app/siyuan/id1583226508/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 440 MB | 31 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Yunnan Liandi Technology Co., Ltd.](https://appshunter.io/developer/1583226510) | [YOULI YANG](https://appshunter.io/developer/6778247288) |

## What reviewers say

### SiYuan

[App page](https://appshunter.io/ios/app/siyuan/id1583226508)

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.

**Highlights:** Privacy-first design, Offline data storage, End-to-end encrypted sync, Block and outline fusion, Bidirectional linking

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Features | $79.99 | one-time |
| Subscription | $188.99 | one-time |


### LifeDue

[App page](https://appshunter.io/ios/app/lifedue/id6778836986)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LifeDue Plus | $2.99 | per month |
| ifeDue Family Pro | $4.99 | per month |


## Frequently asked questions

### Is SiYuan free?

SiYuan is free to download, with in-app purchases available.

### Is LifeDue free?

LifeDue is free to download, with in-app purchases available.

### Do SiYuan or LifeDue have ads?

Neither SiYuan nor LifeDue shows ads.

### Which is updated more often, SiYuan or LifeDue?

SiYuan ships an update every 8 days, and LifeDue every 5 days. Most recently, SiYuan was updated on November 3, 2026 and LifeDue on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*