# 知行录：知行合一 vs Seventy

The clearest difference is in-app purchases: Seventy at none against 知行录：知行合一's 3. 知行录：知行合一's advantage is update cadence (every 4 days vs every 9 days). On ads, device support and iOS requirement there is nothing between them.

知行录：知行合一 ships an update every 4 days, Seventy every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 知行录：知行合一 | Seventy |
| --- | --- | --- |
| Price | **Free** | — |
| 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 9 days |
| Size | 1 MB | 26 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [文丰 邓](https://appshunter.io/developer/1543612991) | [清扬 亓](https://appshunter.io/developer/1886376776) |

## 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 |


### Seventy

[App page](https://appshunter.io/ios/app/seventy-ai/id6760972422)

**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 Seventy free?

Pricing for Seventy is not currently listed on the App Store.

### Do 知行录：知行合一 or Seventy have ads?

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

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

知行录：知行合一 ships an update every 4 days, and Seventy every 9 days. Most recently, 知行录：知行合一 was updated on October 24, 2026 and Seventy 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.*