# Just Content Mobile Security vs Spam Zero

The clearest difference is review sentiment: Just Content Mobile Security at 75% against Spam Zero's 33%. Just Content Mobile Security also leads on rating (4.4 vs 4.1) and ratings volume (68 vs 7). Spam Zero's advantage is update cadence (every 3 days vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Just Content Mobile Security holds the better App Store score, 4.4 against 4.1. That said, the two scores are not equally well evidenced: Just Content Mobile Security has 68 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 75% of Just Content Mobile Security's written reviews are positive against 33% of Spam Zero's.

Just Content Mobile Security ships an update every 2 months, Spam Zero every 3 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Just Content Mobile Security | Spam Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (68 ratings)](https://appshunter.io/ios/app/just-content-mobile-security/id1031003372/reviews)** | [4.1 (7 ratings)](https://appshunter.io/ios/app/spam-zero-spam-call-blocker/id6737818516/reviews) |
| Number of ratings | **68** | 7 |
| Positive reviews | **75.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free | Free |
| Size | 15 MB | 12 MB |
| Requires iOS | **13.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Krishna Kumar](https://appshunter.io/developer/627424487) | [Kavun, LLC](https://appshunter.io/developer/1503851293) |

## What reviewers say

### Just Content Mobile Security

[App page](https://appshunter.io/ios/app/just-content-mobile-security/id1031003372)

Enhance your mobile security with an ad blocker, spam SMS filter, and call blocking. It also checks for software updates and ensures your device has a passcode enabled for comprehensive protection.

**Highlights:** Ad and tracker blocking, Spam and phishing SMS filtering, Unwanted call blocking, Software update alerts, Passcode enforcement, On-device AI for threat detection

**Features:** macOS Compatibility, Safari Extension

**In-app purchases:** none


### Spam Zero

[App page](https://appshunter.io/ios/app/spam-zero-spam-call-blocker/id6737818516)

Block unwanted spam calls with a vast database of known spammers. This privacy-focused app keeps all blocking data on your device, ensuring your calls and contacts remain private. Enjoy smart protection that distinguishes spam from important calls with an easy setup.

**Highlights:** Block 1M+ known spam numbers, Complete privacy, no data collection, Device-only call blocking, Smart protection for important calls, Automatic spam database updates, Real-time call blocking, Easy setup in minutes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Just Content Mobile Security free?

Just Content Mobile Security is free to download, with no in-app purchases.

### Is Spam Zero free?

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

### Which has better reviews, Just Content Mobile Security or Spam Zero?

Just Content Mobile Security is rated higher. Just Content Mobile Security averages 4.4 out of 5 from 68 ratings, while Spam Zero averages 4.1 from 7 ratings.

### Do Just Content Mobile Security or Spam Zero have ads?

Neither Just Content Mobile Security nor Spam Zero shows ads.

### Which is updated more often, Just Content Mobile Security or Spam Zero?

Just Content Mobile Security ships an update every 2 months, and Spam Zero every 3 days. Most recently, Just Content Mobile Security was updated on October 16, 2026 and Spam Zero on October 7, 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.*