# 知行录：知行合一 vs HackerNotes

The clearest difference is price: 知行录：知行合一 at Free against HackerNotes's $1.99. HackerNotes's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 18.0). On update cadence, ads and device support there is nothing between them.

知行录：知行合一 is free to download; HackerNotes costs $1.99 up front. 知行录：知行合一 sells 3 in-app purchases, starting at $0.99 per month. HackerNotes asks for nothing beyond the download.

知行录：知行合一 ships an update every 4 days, HackerNotes every 3 days. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 知行录：知行合一 | HackerNotes |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6464384641/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Size | 1 MB | 30 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文丰 邓](https://appshunter.io/developer/1543612991) | [慧英 郭](https://appshunter.io/developer/1807569882) |

## 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 |


### HackerNotes

[App page](https://appshunter.io/ios/app/hackernotes-productivity/id6744580327)

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

**In-app purchases:** none


## 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 HackerNotes free?

HackerNotes costs $1.99, with no in-app purchases.

### Do 知行录：知行合一 or HackerNotes have ads?

Neither 知行录：知行合一 nor HackerNotes shows ads.

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

知行录：知行合一 ships an update every 4 days, and HackerNotes every 3 days. Most recently, 知行录：知行合一 was updated on October 14, 2026 and HackerNotes on October 2, 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.*