# KONG Master vs VIVAX EcoLink

The clearest difference is update cadence: KONG Master at every 3 weeks against VIVAX EcoLink's every 3 months. VIVAX EcoLink's advantage is iOS requirement (11.0 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.

KONG Master ships an update every 3 weeks, VIVAX EcoLink every 3 months. Both last shipped on November 8, 2026.

## The numbers

| Metric | KONG Master | VIVAX EcoLink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 43 MB | 88 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shanghai KONG Intelligent Building Co., Ltd.](https://appshunter.io/developer/1711740542) | [M SAN Grupa d.d.](https://appshunter.io/developer/1500519106) |

## What reviewers say

### KONG Master

[App page](https://appshunter.io/ios/app/kong-master/id6504264541)

**Features:** macOS Compatibility

**In-app purchases:** none


### VIVAX EcoLink

[App page](https://appshunter.io/ios/app/vivax-ecolink/id6743420030)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KONG Master free?

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

### Is VIVAX EcoLink free?

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

### Do KONG Master or VIVAX EcoLink have ads?

Neither KONG Master nor VIVAX EcoLink shows ads.

### Which is updated more often, KONG Master or VIVAX EcoLink?

KONG Master ships an update every 3 weeks, and VIVAX EcoLink every 3 months. Most recently, KONG Master was updated on November 8, 2026 and VIVAX EcoLink on November 8, 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.*