# KF Solar PRO vs JiaClock

The clearest difference is in-app purchases: KF Solar PRO at none against JiaClock's 3. KF Solar PRO also leads on iOS requirement (8.0 vs 17.0). JiaClock's advantage is update cadence (every 4 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. JiaClock sells 3 in-app purchases, starting at $0.99 per month. KF Solar PRO asks for nothing beyond the download.

KF Solar PRO ships an update every 3 weeks, JiaClock every 4 days. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | KF Solar PRO | JiaClock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 28 MB | 30 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kehua Data Co.,Ltd.](https://appshunter.io/developer/1118238776) | [Beijing Boshujia Technology Co., Ltd](https://appshunter.io/developer/1666207574) |

## What reviewers say

### KF Solar PRO

[App page](https://appshunter.io/ios/app/kf-solar-pro/id1481746574)

**Features:** macOS Compatibility

**In-app purchases:** none


### JiaClock

[App page](https://appshunter.io/ios/app/jiaclock/id6776895229)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Xiaojia Clock Pro Monthly | $0.99 | per month |
| Xiaojia Clock Pro Yearly | $0.99 | per year |
| Xiaojia Clock Pro Lifetime | $1.99 | one-time |


## Frequently asked questions

### Is KF Solar PRO free?

KF Solar PRO is free to download, with no in-app purchases.

### Is JiaClock free?

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

### Do KF Solar PRO or JiaClock have ads?

Neither KF Solar PRO nor JiaClock shows ads.

### Which is updated more often, KF Solar PRO or JiaClock?

KF Solar PRO ships an update every 3 weeks, and JiaClock every 4 days. Most recently, KF Solar PRO was updated on October 6, 2026 and JiaClock on October 17, 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.*