# CSF vs 行動屏大

The clearest difference is update cadence: 行動屏大 at every 3 months against CSF's every 36 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CSF ships an update every 36 months, 行動屏大 every 3 months. Both last shipped on October 15, 2026.

## The numbers

| Metric | CSF | 行動屏大 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 42.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 3 months** |
| Size | 0 MB | 10 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [財團法人中華民國電腦技能基金會](https://appshunter.io/developer/594768047) | [nptu](https://appshunter.io/developer/1367358115) |

## What reviewers say

### CSF

[App page](https://appshunter.io/ios/app/csf/id1227441175)

**Features:** macOS Compatibility

**In-app purchases:** none


### 行動屏大

[App page](https://appshunter.io/ios/app/id1367358116)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSF free?

CSF is free to download, with no in-app purchases.

### Is 行動屏大 free?

行動屏大 is free to download, with no in-app purchases.

### Do CSF or 行動屏大 have ads?

Neither CSF nor 行動屏大 shows ads.

### Which is updated more often, CSF or 行動屏大?

CSF ships an update every 36 months, and 行動屏大 every 3 months. Most recently, CSF was updated on October 15, 2026 and 行動屏大 on October 15, 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.*