# CEI vs Solar Sector

The clearest difference is update cadence: CEI at every 3 months against Solar Sector's every 10 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.

CEI ships an update every 3 months, Solar Sector every 10 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | CEI | Solar Sector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Size | 93 MB | 52 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CEI - Costruzione Emiliana Ingranaggi](https://appshunter.io/developer/1141884214) | [Osama Muhammad](https://appshunter.io/developer/1790405935) |

## What reviewers say

### CEI

[App page](https://appshunter.io/ios/app/cei/id1141884215)

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar Sector

[App page](https://appshunter.io/ios/app/solar-sector/id6740525822)

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

**In-app purchases:** none


## Frequently asked questions

### Is CEI free?

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

### Is Solar Sector free?

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

### Do CEI or Solar Sector have ads?

Neither CEI nor Solar Sector shows ads.

### Which is updated more often, CEI or Solar Sector?

CEI ships an update every 3 months, and Solar Sector every 10 months. Most recently, CEI was updated on November 11, 2026 and Solar Sector on November 8, 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.*