# Energy Efficiency Technologies vs FJAPP

The clearest difference is update cadence: Energy Efficiency Technologies at every 9 days against FJAPP's monthly. Energy Efficiency Technologies also leads on iOS requirement (9.0 vs 13.0). 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.

Energy Efficiency Technologies ships an update every 9 days, FJAPP monthly. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Energy Efficiency Technologies | FJAPP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Monthly |
| Size | 99 MB | 45 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Guangdong Meizhi Compressor Co., Ltd.](https://appshunter.io/developer/1441287281) | [凡己科技(苏州)有限公司](https://appshunter.io/developer/6806164722) |

## What reviewers say

### Energy Efficiency Technologies

[App page](https://appshunter.io/ios/app/energy-efficiency-technologies/id6450695630)

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

**In-app purchases:** none


### FJAPP

[App page](https://appshunter.io/ios/app/fjapp/id6476473286)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Energy Efficiency Technologies free?

Energy Efficiency Technologies is free to download, with no in-app purchases.

### Is FJAPP free?

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

### Do Energy Efficiency Technologies or FJAPP have ads?

Neither Energy Efficiency Technologies nor FJAPP shows ads.

### Which is updated more often, Energy Efficiency Technologies or FJAPP?

Energy Efficiency Technologies ships an update every 9 days, and FJAPP monthly. Most recently, Energy Efficiency Technologies was updated on October 10, 2026 and FJAPP on October 6, 2026.

---

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