# Castle Group Energy vs e

The clearest difference is update cadence: Castle Group Energy at weekly against e's monthly. Castle Group Energy also leads on iOS requirement (15.4 vs 17.0). 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.

Castle Group Energy ships an update weekly, e monthly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Castle Group Energy | e |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Size | 114 MB | 61 MB |
| Requires iOS | **15.4** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Last Mile Solutions](https://appshunter.io/developer/906693089) | [Radius Limited](https://appshunter.io/developer/953051301) |

## What reviewers say

### Castle Group Energy

[App page](https://appshunter.io/ios/app/castle-group-energy/id6754761756)

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

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-route-distributor/id6762374095)

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

**In-app purchases:** none


## Frequently asked questions

### Is Castle Group Energy free?

Castle Group Energy is free to download, with no in-app purchases.

### Is e free?

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

### Do Castle Group Energy or e have ads?

Neither Castle Group Energy nor e shows ads.

### Which is updated more often, Castle Group Energy or e?

Castle Group Energy ships an update weekly, and e monthly. Most recently, Castle Group Energy was updated on October 30, 2026 and e 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.*