# WORLD4SOLAR vs Maxsky Solar

The clearest difference is iOS requirement: WORLD4SOLAR at 13.0 against Maxsky Solar's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

WORLD4SOLAR ships an update every 5 weeks, Maxsky Solar every 2 months. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | WORLD4SOLAR | Maxsky Solar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Size | 85 MB | 227 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu E-Linter Information Technology Co., Ltd.](https://appshunter.io/developer/1149235329) | [Shandong Qipengfa Electronic Technology Co., Ltd](https://appshunter.io/developer/1888077644) |

## What reviewers say

### WORLD4SOLAR

[App page](https://appshunter.io/ios/app/world4solar/id6475158489)

**Features:** macOS Compatibility

**In-app purchases:** none


### Maxsky Solar

[App page](https://appshunter.io/ios/app/maxsky-solar/id6762429198)

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

**In-app purchases:** none


## Frequently asked questions

### Is WORLD4SOLAR free?

WORLD4SOLAR is free to download, with no in-app purchases.

### Is Maxsky Solar free?

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

### Do WORLD4SOLAR or Maxsky Solar have ads?

Neither WORLD4SOLAR nor Maxsky Solar shows ads.

### Which is updated more often, WORLD4SOLAR or Maxsky Solar?

WORLD4SOLAR ships an update every 5 weeks, and Maxsky Solar every 2 months. Most recently, WORLD4SOLAR was updated on October 12, 2026 and Maxsky Solar on October 24, 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.*