# CAT vs SmartgridOne

The clearest difference is update cadence: SmartgridOne at every 2 months against CAT's every 39 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.

CAT ships an update every 39 months, SmartgridOne every 2 months. The most recent releases landed on November 11, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CAT | SmartgridOne |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 2 months** |
| Size | 29 MB | 26 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [C.A.T. Control Systems B.V.](https://appshunter.io/developer/490071267) | [Eniris](https://appshunter.io/developer/1616177363) |

## What reviewers say

### CAT

[App page](https://appshunter.io/ios/app/cat-energy-manager/id1083926644)

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartgridOne

[App page](https://appshunter.io/ios/app/smartgridone/id1616177361)

**In-app purchases:** none


## Frequently asked questions

### Is CAT free?

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

### Is SmartgridOne free?

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

### Do CAT or SmartgridOne have ads?

Neither CAT nor SmartgridOne shows ads.

### Which is updated more often, CAT or SmartgridOne?

CAT ships an update every 39 months, and SmartgridOne every 2 months. Most recently, CAT was updated on November 11, 2026 and SmartgridOne 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.*