# 要事四象限 vs 随声笔记

The clearest difference is price: 随声笔记 at Free against 要事四象限's $0.99. 随声笔记 also leads on update cadence (weekly vs every 33 months) and device support. 要事四象限's advantage is in-app purchases (none vs 15). On iOS requirement there is nothing between them.

随声笔记 is free to download; 要事四象限 costs $0.99 up front. 随声笔记 sells 15 in-app purchases, starting at $9.99 per month. 要事四象限 asks for nothing beyond the download.

要事四象限 ships an update every 33 months, 随声笔记 weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 要事四象限 | 随声笔记 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-and/id6798235204/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 33 months | **Weekly** |
| Size | 17 MB | 80 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [超 孟](https://appshunter.io/developer/666754845) | [XL Mobile](https://appshunter.io/developer/1703506780) |

## What reviewers say

### 要事四象限

[App page](https://appshunter.io/ios/app/id6448916763)

**In-app purchases:** none


### 随声笔记

[App page](https://appshunter.io/ios/app/ai-and/id6798235204)

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月VIP | $9.99 | per month |
| 周会员 | $9.99 | per 7 days |
| 周会员 | $9.99 | per 7 days |
| 月度会员 | $14.99 | per month |
| 包年会员 | $29.99 | per year |
| 1年VIP | $39.99 | per year |
| 30GB | $3.99 | one-time |
| 300分钟 | $3.99 | one-time |
| 150万算力 | $3.99 | one-time |
| 50GB | $6.99 | one-time |
| 500分钟 | $6.99 | one-time |
| 250万算力 | $6.99 | one-time |
| 100GB | $14.99 | one-time |
| 1000分钟 | $14.99 | one-time |
| 500万算力 | $14.99 | one-time |


## Frequently asked questions

### Is 要事四象限 free?

要事四象限 costs $0.99, with no in-app purchases.

### Is 随声笔记 free?

随声笔记 is free to download, with in-app purchases available.

### Which is updated more often, 要事四象限 or 随声笔记?

要事四象限 ships an update every 33 months, and 随声笔记 weekly. Most recently, 要事四象限 was updated on October 30, 2026 and 随声笔记 on October 31, 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.*