# Impact SmartMonitor v4 vs ETAuto

The clearest difference is device support: Impact SmartMonitor v4 at 3 against ETAuto's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Impact SmartMonitor v4 | ETAuto |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 17 MB | 93 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Impact Research & Measurement Pvt Ltd](https://appshunter.io/developer/1074854270) | [Times Internet Limited](https://appshunter.io/developer/427164656) |

## What reviewers say

### Impact SmartMonitor v4

[App page](https://appshunter.io/ios/app/impact-smartmonitor-v4/id1074854271)

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

**In-app purchases:** none


### ETAuto

[App page](https://appshunter.io/ios/app/etauto/id1177341882)

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

**In-app purchases:** none


## Frequently asked questions

### Is Impact SmartMonitor v4 free?

Impact SmartMonitor v4 is free to download, with no in-app purchases.

### Is ETAuto free?

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

### Do Impact SmartMonitor v4 or ETAuto have ads?

Neither Impact SmartMonitor v4 nor ETAuto shows ads.

### Which is updated more often, Impact SmartMonitor v4 or ETAuto?

Impact SmartMonitor v4 ships an update every 3 months, and ETAuto every 3 months. Most recently, Impact SmartMonitor v4 was updated on October 4, 2026 and ETAuto on October 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.*