# NSP Security vs Holler

The clearest difference is in-app purchases: NSP Security at none against Holler's 3. NSP Security also leads on iOS requirement (11.0 vs 15.1). Holler's advantage is update cadence (weekly vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Holler sells 3 in-app purchases, starting at $19.99 per month. NSP Security asks for nothing beyond the download.

NSP Security ships an update every 6 weeks, Holler weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | NSP Security | Holler |
| --- | --- | --- |
| 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 | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 34 MB | 68 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NSP Europe Ltd](https://appshunter.io/developer/1314860745) | [HollerApp Limited](https://appshunter.io/developer/1830340296) |

## 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


### Holler

[App page](https://appshunter.io/ios/app/holler-book-local-services/id6796794071)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Holler Services | $19.99 | per month |
| Holler Services | $29.99 | per 3 months |
| Holler Services | $49.99 | per 6 months |


## Frequently asked questions

### Is NSP Security free?

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

### Is Holler free?

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

### Do NSP Security or Holler have ads?

Neither NSP Security nor Holler shows ads.

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

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