# K vs bubble for YH

The clearest difference is iOS requirement: bubble for YH at 13.0 against K's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. K sells 1 in-app purchase, starting at $0.99 per month and bubble for YH sells 16 in-app purchases, starting at $4.49 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | K | bubble for YH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (7 ratings)](https://appshunter.io/ios/app/bubble-for-yh/id6759778543/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 29.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 142 MB | 60 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kulucky Rangers Inc.](https://appshunter.io/developer/1594808743) | [Dear U Co., Ltd.](https://appshunter.io/developer/1460356116) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-insight/id6739238066)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $0.99 | per month |


### bubble for YH

[App page](https://appshunter.io/ios/app/bubble-for-yh/id6759778543)

Connect with your favorite idols through private messages, exclusive content, and live video chats. Receive personalized messages, share your thoughts, and celebrate anniversaries with them. The app supports multiple languages for seamless communication.

**Highlights:** Private idol messages, Dedicated artist content, Live video chat with idols, Reply to idol messages, Anniversary tracking, Multi-language support

**Features:** Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AND2BLE 1 Ticket | $4.49 | per month |
| YENA Ticket | $4.49 | per month |
| TEMPEST 1 Ticket | $4.49 | per month |
| AND2BLE 2 Tickets | $8.49 | per month |
| TEMPEST 2 Tickets | $8.49 | per month |
| TEMPEST 3 Tickets | $12.49 | per month |
| AND2BLE 3 Tickets | $12.49 | per month |
| AND2BLE 4 Tickets | $16.99 | per month |
| AND2BLE 5 Tickets | $21.49 | per month |
| TEMPEST 5 Tickets | $21.49 | per month |
| TEMPEST 6 Tickets | $25.99 | per month |
| 100 Coin | $0.99 | one-time |
| 500 Coin | $4.99 | one-time |
| 1000 Coin | $9.99 | one-time |
| 3000 Coin | $27.99 | one-time |
| 5000 Coin | $45.99 | one-time |


## Frequently asked questions

### Is K free?

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

### Is bubble for YH free?

bubble for YH is free to download, with in-app purchases available.

### Do K or bubble for YH have ads?

Neither K nor bubble for YH shows ads.

### Which is updated more often, K or bubble for YH?

K ships an update fortnightly, and bubble for YH fortnightly. Most recently, K was updated on October 28, 2026 and bubble for YH on October 31, 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.*