# KEANS Alerts vs NAC

The clearest difference is in-app purchases: KEANS Alerts at none against NAC's 1. NAC's advantage is update cadence (fortnightly vs every 3 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. NAC sells 1 in-app purchase, starting at $199.00 per year. KEANS Alerts asks for nothing beyond the download.

KEANS Alerts ships an update every 3 months, NAC fortnightly. The most recent releases landed on September 5, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | KEANS Alerts | NAC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 20 MB | 3 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOVA Corp.](https://appshunter.io/developer/1013952534) | [Neubert Aero Corp](https://appshunter.io/developer/1785752651) |

## What reviewers say

### KEANS Alerts

[App page](https://appshunter.io/ios/app/keans-alerts/id6474447404)

**Features:** macOS Compatibility

**In-app purchases:** none


### NAC

[App page](https://appshunter.io/ios/app/nac-dfd-decelerometer/id6478895830)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U.S. Region | $199.00 | per year |


## Frequently asked questions

### Is KEANS Alerts free?

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

### Is NAC free?

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

### Do KEANS Alerts or NAC have ads?

Neither KEANS Alerts nor NAC shows ads.

### Which is updated more often, KEANS Alerts or NAC?

KEANS Alerts ships an update every 3 months, and NAC fortnightly. Most recently, KEANS Alerts was updated on September 5, 2026 and NAC on September 14, 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.*