# 閃卡小精靈 ElfCard vs 4 Quadrant Rule

The clearest difference is price: 閃卡小精靈 ElfCard at Free against 4 Quadrant Rule's $1.99. 4 Quadrant Rule's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads there is nothing between them.

閃卡小精靈 ElfCard is free to download; 4 Quadrant Rule costs $1.99 up front. 閃卡小精靈 ElfCard sells 2 in-app purchases, starting at $4.99 per month. 4 Quadrant Rule asks for nothing beyond the download.

## The numbers

| Metric | 閃卡小精靈 ElfCard | 4 Quadrant Rule |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 4 MB | 24 MB |
| Requires iOS | 18.1 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wei Cheng Chen](https://appshunter.io/developer/1862953921) | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) |

## What reviewers say

### 閃卡小精靈 ElfCard

[App page](https://appshunter.io/ios/app/elfcard/id6760574622)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 月訂閱 | $4.99 | per month |
| Pro 年訂閱 | $49.99 | per year |


### 4 Quadrant Rule

[App page](https://appshunter.io/ios/app/4-quadrant-rule-task-planner/id6786556931)

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

**In-app purchases:** none


## Frequently asked questions

### Is 閃卡小精靈 ElfCard free?

閃卡小精靈 ElfCard is free to download, with in-app purchases available.

### Is 4 Quadrant Rule free?

4 Quadrant Rule costs $1.99, with no in-app purchases.

### Do 閃卡小精靈 ElfCard or 4 Quadrant Rule have ads?

Neither 閃卡小精靈 ElfCard nor 4 Quadrant Rule shows ads.

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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.*