# solar123 vs XinderTec

The clearest difference is update cadence: XinderTec at every 4 days against solar123's every 19 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

solar123 ships an update every 19 months, XinderTec every 4 days. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | solar123 | XinderTec |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 4 days** |
| Size | 21 MB | 30 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Rockcore Electronic Technology Co.,Ltd](https://appshunter.io/developer/1031556232) | [Changzhou Xinder-Tech Electronics Co., Ltd](https://appshunter.io/developer/1402533068) |

## What reviewers say

### solar123

[App page](https://appshunter.io/ios/app/solar123/id1527530207)

**Features:** macOS Compatibility

**In-app purchases:** none


### XinderTec

[App page](https://appshunter.io/ios/app/xindertec/id6737842155)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is solar123 free?

solar123 is free to download, with no in-app purchases.

### Is XinderTec free?

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

### Do solar123 or XinderTec have ads?

Neither solar123 nor XinderTec shows ads.

### Which is updated more often, solar123 or XinderTec?

solar123 ships an update every 19 months, and XinderTec every 4 days. Most recently, solar123 was updated on September 20, 2026 and XinderTec on September 18, 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.*