# Random Voca vs 키링

The clearest difference is update cadence: Random Voca at every 4 days against 키링's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Random Voca sells 1 one-off in-app purchase and 키링 sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Random Voca ships an update every 4 days, 키링 every 9 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Random Voca | 키링 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Size | 17 MB | 42 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hyeongbok Jeon](https://appshunter.io/developer/1629799278) | [Yoonjae Kil](https://appshunter.io/developer/1844798777) |

## What reviewers say

### Random Voca

[App page](https://appshunter.io/ios/app/random-voca/id6739653143)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer | $0.49 | one-time |


### 키링

[App page](https://appshunter.io/ios/app/id6773377479)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 키링 프로 월간 | $5.99 | per month |
| Keyling Pro | $5.99 | per month |
| 키링 프로 3개월 | $12.99 | per 3 months |
| 키링 프로 연간 | $39.99 | per year |


## Frequently asked questions

### Is Random Voca free?

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

### Is 키링 free?

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

### Do Random Voca or 키링 have ads?

Neither Random Voca nor 키링 shows ads.

### Which is updated more often, Random Voca or 키링?

Random Voca ships an update every 4 days, and 키링 every 9 days. Most recently, Random Voca was updated on October 25, 2026 and 키링 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.*