# 空快 vs 明鏡

The clearest difference is update cadence: 明鏡 at weekly against 空快's every 4 weeks. 空快's advantage is iOS requirement (13.0 vs 15.0). 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.

空快 ships an update every 4 weeks, 明鏡 weekly. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 空快 | 明鏡 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 62 MB | 87 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [creafons.k.k](https://appshunter.io/developer/1548408510) | [Nihon no Inaka ha Shihonshugi no Frontier da LLC.](https://appshunter.io/developer/796913059) |

## What reviewers say

### 空快

[App page](https://appshunter.io/ios/app/id1642252172)

**Features:** macOS Compatibility

**In-app purchases:** none


### 明鏡

[App page](https://appshunter.io/ios/app/ai/id6792995299)

Learn AI, marketing, and general knowledge through text, video, and AI audio lectures. Track your progress with reading, bookmarks, and notes. Enjoy daily recommended readings and a podcast.

**Highlights:** Text and video lectures, AI audio learning, Audiobook-style playback, Daily podcast, Learning progress tracking, Daily recommended readings

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

**In-app purchases:** none


## Frequently asked questions

### Is 空快 free?

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

### Is 明鏡 free?

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

### Do 空快 or 明鏡 have ads?

Neither 空快 nor 明鏡 shows ads.

### Which is updated more often, 空快 or 明鏡?

空快 ships an update every 4 weeks, and 明鏡 weekly. Most recently, 空快 was updated on October 6, 2026 and 明鏡 on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*