# HAT vs iEnergy

The clearest difference is update cadence: HAT at every 9 days against iEnergy's every 4 months. HAT also leads on iOS requirement (11.0 vs 15.5). 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.

HAT ships an update every 9 days, iEnergy every 4 months. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | HAT | iEnergy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 4 months |
| Size | 118 MB | 25 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [hikvision](https://appshunter.io/developer/1222251068) | [Shenzhen ZTE Software Co., Ltd.](https://appshunter.io/developer/1863573894) |

## What reviewers say

### HAT

[App page](https://appshunter.io/ios/app/hat/id6447845660)

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

**In-app purchases:** none


### iEnergy

[App page](https://appshunter.io/ios/app/ienergy/id6544801425)

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

**In-app purchases:** none


## Frequently asked questions

### Is HAT free?

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

### Is iEnergy free?

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

### Do HAT or iEnergy have ads?

Neither HAT nor iEnergy shows ads.

### Which is updated more often, HAT or iEnergy?

HAT ships an update every 9 days, and iEnergy every 4 months. Most recently, HAT was updated on October 7, 2026 and iEnergy on September 30, 2026.

---

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