# 미세먼지SOS vs Chara

The clearest difference is in-app purchases: 미세먼지SOS at none against Chara's 15. 미세먼지SOS also leads on ads (none vs shown) and device support (3 vs 1). Chara's advantage is update cadence (weekly vs every 32 months). On price there is nothing between them.

Both are free to download. Chara sells 14 in-app purchases, starting at $5.99 per month. 미세먼지SOS asks for nothing beyond the download.

미세먼지SOS ships an update every 32 months, Chara weekly. The most recent releases landed on October 17, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 미세먼지SOS | Chara |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (114 ratings)](https://appshunter.io/ios/app/chara-ai-chat/id6477270556/reviews)** |
| Number of ratings | — | **114** |
| Positive reviews | — | 91.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 32 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 175 MB | 90 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Ecoplay Co., Ltd.](https://appshunter.io/developer/1497635995) | [K Friend Co., Ltd.](https://appshunter.io/developer/1505924083) |

## What reviewers say

### 미세먼지SOS

[App page](https://appshunter.io/ios/app/sos/id1469479883)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chara

[App page](https://appshunter.io/ios/app/chara-ai-chat/id6477270556)

Engage in imaginative conversations with a diverse cast of characters. Explore various scenarios, test your empathy, and even seek advice on relationships. Earn daily rewards through missions and activities to enhance your chat experience.

**Highlights:** Chat with diverse characters, Act out various scenarios, Seek relationship advice, Daily free rewards, Character creation, Daily check-ins and roulette

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chara Pass | $5.99 | per month |
| 1,000 ChatBubbles | $3.99 | one-time |
| 1,000 ChatBubbles | $5.99 | one-time |
| 10 image keys | $6.99 | one-time |
| 2,200 ChatBubbles | $11.99 | one-time |
| 300 ChatBubbles | $11.99 | one-time |
| 5,000 ChatBubbles | $14.99 | one-time |
| 200 ChatBubbles | $14.99 | one-time |
| 500 ChatBubbles | $19.99 | one-time |
| 4,800 ChatBubbles | $24.99 | one-time |
| 1225 X-mas ChatBubbles | $39.99 | one-time |
| 1006 ChatBubbles | $39.99 | one-time |
| 10,000 ChatBubbles | $49.99 | one-time |
| 2025 ChatBubbles | $69.99 | one-time |

**What reviewers like**

- 👍 Highly enjoyable
- 👍 Great for passing time
- 👍 Excellent app
- 👍 Wonderful experience
- 👍 Fantastic app

**What reviewers complain about**

- 🗨️ Issues with speech bubbles
- 🗨️ Wish for more speech bubbles

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- More speech bubble options
- Improved speech bubble design


## Frequently asked questions

### Is 미세먼지SOS free?

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

### Is Chara free?

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

### Do 미세먼지SOS or Chara have ads?

Chara shows ads; 미세먼지SOS does not.

### Which is updated more often, 미세먼지SOS or Chara?

미세먼지SOS ships an update every 32 months, and Chara weekly. Most recently, 미세먼지SOS was updated on October 17, 2026 and Chara on October 27, 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.*