# CSF vs i明志

The clearest difference is update cadence: i明志 at every 2 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, i明志 every 2 months. Both last shipped on September 10, 2026.

## The numbers

| Metric | CSF | i明志 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 2 months** |
| Size | 0 MB | 17 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [財團法人中華民國電腦技能基金會](https://appshunter.io/developer/594768047) | [文鶴出版有限公司](https://appshunter.io/developer/1290622931) |

## What reviewers say

### CSF

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

**Features:** macOS Compatibility

**In-app purchases:** none


### i明志

[App page](https://appshunter.io/ios/app/i/id1527721742)

**In-app purchases:** none


## Frequently asked questions

### Is CSF free?

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

### Is i明志 free?

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

### Do CSF or i明志 have ads?

Neither CSF nor i明志 shows ads.

### Which is updated more often, CSF or i明志?

CSF ships an update every 36 months, and i明志 every 2 months. Most recently, CSF was updated on September 10, 2026 and i明志 on September 10, 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.*