# loadsol vs Calleis

The clearest difference is update cadence: loadsol at every 3 weeks against Calleis's every 24 months. loadsol also leads on iOS requirement (10.0 vs 12.0). 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.

loadsol ships an update every 3 weeks, Calleis every 24 months. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | loadsol | Calleis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 24 months |
| Size | 242 MB | 133 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [novel GmbH Elektrische Spezialgeräte](https://appshunter.io/developer/1099858128) | [Proteor](https://appshunter.io/developer/1061959922) |

## What reviewers say

### loadsol

[App page](https://appshunter.io/ios/app/loadsol-s/id1538591968)

**Features:** Vision Pro support

**In-app purchases:** none


### Calleis

[App page](https://appshunter.io/ios/app/calleis/id1541338725)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is loadsol free?

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

### Is Calleis free?

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

### Do loadsol or Calleis have ads?

Neither loadsol nor Calleis shows ads.

### Which is updated more often, loadsol or Calleis?

loadsol ships an update every 3 weeks, and Calleis every 24 months. Most recently, loadsol was updated on October 12, 2026 and Calleis on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*