# N9 vs WI Smart

The clearest difference is update cadence: N9 at every 3 weeks against WI Smart's every 10 months. N9 also leads on iOS requirement (8.0 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.

N9 ships an update every 3 weeks, WI Smart every 10 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | N9 | WI Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/n9/id1337449449/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | Free | — |
| Size | 83 MB | 202 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [传林 方](https://appshunter.io/developer/699727053) | [Hangzhou WISTAR Mechanical & Electric Technology Co., Ltd.](https://appshunter.io/developer/1028324761) |

## What reviewers say

### N9

[App page](https://appshunter.io/ios/app/n9/id1337449449)

This utility app alerts you to vehicle presence using infrared detectors. Customize alarm volume and choose from 16 distinct sounds. It supports up to 12 infrared sensors across six zones.

**Highlights:** Infrared vehicle detection, Adjustable alarm volume, 16 alarm sound options, Supports 12 infrared sensors, Six detection zones

**Features:** macOS Compatibility

**In-app purchases:** none


### WI Smart

[App page](https://appshunter.io/ios/app/wi-smart/id1571062398)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is N9 free?

N9 is free to download, with no in-app purchases.

### Is WI Smart free?

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

### Do N9 or WI Smart have ads?

Neither N9 nor WI Smart shows ads.

### Which is updated more often, N9 or WI Smart?

N9 ships an update every 3 weeks, and WI Smart every 10 months. Most recently, N9 was updated on November 2, 2026 and WI Smart on November 7, 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.*