# E vs K

The clearest difference is in-app purchases: E at none against K's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. K sells 2 in-app purchases, starting at $6.99 per month. E asks for nothing beyond the download.

E ships an update every 4 months, K every 5 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | E | K |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 149 MB | 2 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [诗坤 田](https://appshunter.io/developer/1296193021) | [Gap Suk Choi](https://appshunter.io/developer/1570086155) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-lms/id1613304241)

**Features:** macOS Compatibility

**In-app purchases:** none


### K

[App page](https://appshunter.io/ios/app/k-geulkgeul/id6502755628)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $6.99 | per month |
| K-Geul 1-year pass | $49.99 | one-time |


## Frequently asked questions

### Is E free?

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

### Is K free?

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

### Do E or K have ads?

Neither E nor K shows ads.

### Which is updated more often, E or K?

E ships an update every 4 months, and K every 5 months. Most recently, E was updated on October 25, 2026 and K on October 25, 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.*