# 教城教師 vs CELT

The clearest difference is in-app purchases: 教城教師 at none against CELT's 10. 教城教師 also leads on update cadence (every 3 weeks vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CELT sells 10 one-off in-app purchases. 教城教師 asks for nothing beyond the download.

教城教師 ships an update every 3 weeks, CELT every 6 months. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 教城教師 | CELT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Size | 37 MB | 146 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Education City Limited](https://appshunter.io/developer/672104764) | [Online Learning](https://appshunter.io/developer/1790866777) |

## What reviewers say

### 教城教師

[App page](https://appshunter.io/ios/app/id1664047385)

**Features:** Vision Pro support

**In-app purchases:** none


### CELT

[App page](https://appshunter.io/ios/app/celt/id6448754205)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - 5.69 | $5.69 | one-time |
| Package - 5.89 | $5.89 | one-time |
| Package - 5.9 | $5.90 | one-time |
| Package - 6.19 | $6.19 | one-time |
| Package - 6.29 | $6.29 | one-time |
| Package - 6.39 | $6.39 | one-time |
| Package - 6.49 | $6.49 | one-time |
| Package - 6.59 | $6.59 | one-time |
| Package - 6.69 | $6.69 | one-time |
| Package - 6.79 | $6.79 | one-time |


## Frequently asked questions

### Is 教城教師 free?

教城教師 is free to download, with no in-app purchases.

### Is CELT free?

CELT is free to download, with in-app purchases available.

### Do 教城教師 or CELT have ads?

Neither 教城教師 nor CELT shows ads.

### Which is updated more often, 教城教師 or CELT?

教城教師 ships an update every 3 weeks, and CELT every 6 months. Most recently, 教城教師 was updated on October 2, 2026 and CELT on October 5, 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.*