# Security Frontier vs NellCatch

The clearest difference is ads: Security Frontier at none against NellCatch's shown. Security Frontier also leads on update cadence (every 4 days vs every 2 weeks) and iOS requirement (12.0 vs 16.0). On price, 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.

Security Frontier ships an update every 4 days, NellCatch every 2 weeks. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Security Frontier | NellCatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 106 MB | 250 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Quynh Vu Huy](https://appshunter.io/developer/1727299267) | [Naoya Sakai](https://appshunter.io/developer/1395108738) |

## What reviewers say

### Security Frontier

[App page](https://appshunter.io/ios/app/security-frontier/id6480581218)

**Features:** macOS Compatibility

**In-app purchases:** none


### NellCatch

[App page](https://appshunter.io/ios/app/nellcatch/id6736881148)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Security Frontier free?

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

### Is NellCatch free?

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

### Do Security Frontier or NellCatch have ads?

NellCatch shows ads; Security Frontier does not.

### Which is updated more often, Security Frontier or NellCatch?

Security Frontier ships an update every 4 days, and NellCatch every 2 weeks. Most recently, Security Frontier was updated on September 11, 2026 and NellCatch on September 9, 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.*