# CMS EcoTrak vs Smart Sensor

The clearest difference is update cadence: Smart Sensor at every 2 weeks against CMS EcoTrak's every 3 months. Smart Sensor also leads on iOS requirement (12.1 vs 17.6). 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.

CMS EcoTrak ships an update every 3 months, Smart Sensor every 2 weeks. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | CMS EcoTrak | Smart Sensor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 56 MB | 40 MB |
| Requires iOS | 17.6 | **12.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CMS SupaTrak Ltd](https://appshunter.io/developer/1565174937) | [Supply Fuel Solutions Limited](https://appshunter.io/developer/1670884145) |

## What reviewers say

### CMS EcoTrak

[App page](https://appshunter.io/ios/app/cms-ecotrak/id1584830834)

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

**In-app purchases:** none


### Smart Sensor

[App page](https://appshunter.io/ios/app/smart-sensor/id1670884143)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CMS EcoTrak free?

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

### Is Smart Sensor free?

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

### Do CMS EcoTrak or Smart Sensor have ads?

Neither CMS EcoTrak nor Smart Sensor shows ads.

### Which is updated more often, CMS EcoTrak or Smart Sensor?

CMS EcoTrak ships an update every 3 months, and Smart Sensor every 2 weeks. Most recently, CMS EcoTrak was updated on September 9, 2026 and Smart Sensor on September 19, 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.*