# 知行录：知行合一 vs Time Island

The clearest difference is update cadence: 知行录：知行合一 at every 4 days against Time Island's monthly. Time Island's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 知行录：知行合一 sells 3 in-app purchases, starting at $0.99 per month and Time Island sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

知行录：知行合一 ships an update every 4 days, Time Island monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 知行录：知行合一 | Time Island |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6464384641/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Size | 1 MB | 62 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文丰 邓](https://appshunter.io/developer/1543612991) | [燕玲 连](https://appshunter.io/developer/1896300388) |

## What reviewers say

### 知行录：知行合一

[App page](https://appshunter.io/ios/app/id6464384641)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly (Auto Renew) | $0.99 | per month |
| Yearly (Auto Renew) | $6.99 | per year |
| Lifetime (Pay Once) | $9.99 | one-time |


### Time Island

[App page](https://appshunter.io/ios/app/time-island-ai-day-planner/id6792811573)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $2.99 | per month |
| 连续包年 | $19.99 | per year |


## Frequently asked questions

### Is 知行录：知行合一 free?

知行录：知行合一 is free to download, with in-app purchases available.

### Is Time Island free?

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

### Do 知行录：知行合一 or Time Island have ads?

Neither 知行录：知行合一 nor Time Island shows ads.

### Which is updated more often, 知行录：知行合一 or Time Island?

知行录：知行合一 ships an update every 4 days, and Time Island monthly. Most recently, 知行录：知行合一 was updated on October 24, 2026 and Time Island 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.*