# Terravan vs Energy Controller for Powston

The clearest difference is update cadence: Energy Controller for Powston at weekly against Terravan's every 2 months. Terravan's advantage is iOS requirement (14.0.0 vs 17.6). 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.

Terravan ships an update every 2 months, Energy Controller for Powston weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Terravan | Energy Controller for Powston |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/terravan/id1645593172/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 47 MB | 13 MB |
| Requires iOS | **14.0.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, Apple TV, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [AFL Ventures LLC](https://appshunter.io/developer/1525593467) | [Richard Bollar](https://appshunter.io/developer/1864304955) |

## What reviewers say

### Terravan

[App page](https://appshunter.io/ios/app/terravan/id1645593172)

Monitor your Terravan Tetrapack and connected products. Track solar and alternator charge data, battery status, and more. Optimize your adventure power management.

**Highlights:** Monitor solar charge data, Monitor alternator charge data, Monitor battery data, Control Terravan Tetrapack, Control additional products

**In-app purchases:** none


### Energy Controller for Powston

[App page](https://appshunter.io/ios/app/energy-controller-for-powston/id6757072169)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Terravan free?

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

### Is Energy Controller for Powston free?

Energy Controller for Powston is free to download, with no in-app purchases.

### Do Terravan or Energy Controller for Powston have ads?

Neither Terravan nor Energy Controller for Powston shows ads.

### Which is updated more often, Terravan or Energy Controller for Powston?

Terravan ships an update every 2 months, and Energy Controller for Powston weekly. Most recently, Terravan was updated on November 3, 2026 and Energy Controller for Powston on October 30, 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.*