# iSun vs KellyChat

The clearest difference is in-app purchases: KellyChat at none against iSun's 10. KellyChat also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iSun sells 10 one-off in-app purchases. KellyChat asks for nothing beyond the download.

iSun ships an update every 6 days, KellyChat every 5 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | iSun | KellyChat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 5 days** |
| Size | 266 MB | 28 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [成都二耶科技有限公司](https://appshunter.io/developer/1763409898) | [深圳光跃潮汐科技有限公司](https://appshunter.io/developer/1896116638) |

## What reviewers say

### iSun

[App page](https://appshunter.io/ios/app/isun/id6757897149)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6元购买 | $0.99 | one-time |
| 12元购买 | $1.99 | one-time |
| 18元购买 | $2.99 | one-time |
| 22元购买 | $2.99 | one-time |
| 30元购买 | $3.99 | one-time |
| 35元购买 | $4.99 | one-time |
| 38元购买 | $4.99 | one-time |
| 68元购买 | $9.99 | one-time |
| 98元购买 | $14.99 | one-time |
| 128元购买 | $19.99 | one-time |


### KellyChat

[App page](https://appshunter.io/ios/app/kellychat/id6765888226)

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

**In-app purchases:** none


## Frequently asked questions

### Is iSun free?

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

### Is KellyChat free?

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

### Do iSun or KellyChat have ads?

Neither iSun nor KellyChat shows ads.

### Which is updated more often, iSun or KellyChat?

iSun ships an update every 6 days, and KellyChat every 5 days. Most recently, iSun was updated on October 27, 2026 and KellyChat 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.*