# Energy Efficiency Technologies vs iDataLink Maestro Central

The clearest difference is update cadence: Energy Efficiency Technologies at every 9 days against iDataLink Maestro Central's every 2 months. Energy Efficiency Technologies also leads on iOS requirement (9.0 vs 16.4). 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, iDataLink Maestro Central every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Energy Efficiency Technologies | iDataLink Maestro Central |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (3 ratings)](https://appshunter.io/ios/app/idatalink-maestro-central/id6468587230/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | — | Free |
| Size | 99 MB | 22 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Guangdong Meizhi Compressor Co., Ltd.](https://appshunter.io/developer/1441287281) | [Automotive Data Solutions Inc](https://appshunter.io/developer/560261291) |

## 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


### iDataLink Maestro Central

[App page](https://appshunter.io/ios/app/idatalink-maestro-central/id6468587230)

This application allows users to program, maintain, and customize compatible iDatalink Maestro products for their vehicles. It connects wirelessly via Bluetooth, enabling remote interaction with supported devices for firmware updates and configuration.

**Highlights:** Vehicle programming, Product maintenance, Customization options, Wireless Bluetooth connectivity, Firmware updates, Configuration management

**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 iDataLink Maestro Central free?

iDataLink Maestro Central is free to download, with no in-app purchases.

### Do Energy Efficiency Technologies or iDataLink Maestro Central have ads?

Neither Energy Efficiency Technologies nor iDataLink Maestro Central shows ads.

### Which is updated more often, Energy Efficiency Technologies or iDataLink Maestro Central?

Energy Efficiency Technologies ships an update every 9 days, and iDataLink Maestro Central every 2 months. Most recently, Energy Efficiency Technologies was updated on October 25, 2026 and iDataLink Maestro Central 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.*