# E vs Security On

The clearest difference is update cadence: Security On at every 5 days against E's every 3 months. E's advantage is iOS requirement (13.0 vs 15.0). On price, ads, 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.

E ships an update every 3 months, Security On every 5 days. The most recent releases landed on June 11, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | E | Security On |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 21 MB | 56 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Ulaanbaatar Railway, Mongolian-Russian JVC](https://appshunter.io/developer/1273656008) | [Badral Dashzeveg](https://appshunter.io/developer/1849879428) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-normative/id6470155996)

**Features:** macOS Compatibility

**In-app purchases:** none


### Security On

[App page](https://appshunter.io/ios/app/security-on/id6754758796)

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

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is Security On free?

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

### Do E or Security On have ads?

Neither E nor Security On shows ads.

### Which is updated more often, E or Security On?

E ships an update every 3 months, and Security On every 5 days. Most recently, E was updated on June 11, 2026 and Security On on September 26, 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.*