# N9 vs Audify

The clearest difference is in-app purchases: N9 at none against Audify's 3. N9 also leads on ads (none vs shown) and iOS requirement (8.0 vs 16.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Audify sells 3 in-app purchases, starting at $2.99 per 7 days. N9 asks for nothing beyond the download.

N9 ships an update every 3 weeks, Audify fortnightly. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | N9 | Audify |
| --- | --- | --- |
| 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** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 83 MB | 46 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [传林 方](https://appshunter.io/developer/699727053) | [苗钰 谭](https://appshunter.io/developer/1797976340) |

## 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


### Audify

[App page](https://appshunter.io/ios/app/audify-ai-detect-and-analysis/id6744267644)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Three Months | $6.99 | per 3 months |
| Lifetime member | $12.99 | one-time |


## Frequently asked questions

### Is N9 free?

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

### Is Audify free?

Audify is free to download, with in-app purchases available.

### Do N9 or Audify have ads?

Audify shows ads; N9 does not.

### Which is updated more often, N9 or Audify?

N9 ships an update every 3 weeks, and Audify fortnightly. Most recently, N9 was updated on October 16, 2026 and Audify on October 25, 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.*