# NSP Security vs DeterAlert

The clearest difference is in-app purchases: NSP Security at none against DeterAlert's 4. NSP Security also leads on update cadence (every 6 weeks vs every 20 months) and device support. On price there is nothing between them.

Both are free to download. DeterAlert sells 4 in-app purchases, starting at $0.99 per month. NSP Security asks for nothing beyond the download.

NSP Security ships an update every 6 weeks, DeterAlert every 20 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | NSP Security | DeterAlert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/nsp-security/id1314860746/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 8.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | **Every 6 weeks** | Every 20 months |
| Monetization | Free | — |
| Size | 34 MB | 23 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [NSP Europe Ltd](https://appshunter.io/developer/1314860745) | [Deteralert Limited](https://appshunter.io/developer/640058686) |

## What reviewers say

### NSP Security

[App page](https://appshunter.io/ios/app/nsp-security/id1314860746)

Unlock doors using your smartphone via Bluetooth. Securely manage access rights for users and track entry events in real-time. This system integrates with existing RFID readers for comprehensive control.

**Highlights:** Unlock doors with smartphone, Bluetooth Low Energy (BLE) access, Securely issue and revoke access rights, Real-time event logging and transmission, Integrates with RFID readers, User-friendly mobile application

**Features:** macOS Compatibility

**In-app purchases:** none


### DeterAlert

[App page](https://appshunter.io/ios/app/deteralert/id1579081124)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| 3AlertPack | $2.99 | one-time |
| DeterAlert 10 Pack | $7.99 | one-time |
| 10AlertPack | $9.99 | one-time |


## Frequently asked questions

### Is NSP Security free?

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

### Is DeterAlert free?

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

### Which is updated more often, NSP Security or DeterAlert?

NSP Security ships an update every 6 weeks, and DeterAlert every 20 months. Most recently, NSP Security was updated on October 24, 2026 and DeterAlert 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.*