# Ziferblat Admin vs Defapp

The clearest difference is in-app purchases: Ziferblat Admin at none against Defapp's 1. Ziferblat Admin also leads on iOS requirement (9.0 vs 15.0). Defapp's advantage is update cadence (fortnightly vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Defapp sells 1 in-app purchase, starting at $2.99 per year. Ziferblat Admin asks for nothing beyond the download.

Ziferblat Admin ships an update monthly, Defapp fortnightly. The most recent releases landed on October 9, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Ziferblat Admin | Defapp |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 13 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ziferblat Ltd](https://appshunter.io/developer/1085046948) | [macremer](https://appshunter.io/developer/455580164) |

## What reviewers say

### Ziferblat Admin

[App page](https://appshunter.io/ios/app/ziferblat-admin/id1085090023)

**In-app purchases:** none


### Defapp

[App page](https://appshunter.io/ios/app/defapp-personal-security/id1536395733)

This app provides discreet personal security for individuals feeling unsafe or threatened. It allows users to quickly call for help, share their location, and activate defense mechanisms like strobe lights and alarms, even without speaking. Designed for situations where you're alone, it offers peace of mind on the go.

**Highlights:** Discreet emergency contact notification, Real-time location sharing, Strobe light for defense, Loud alarm to deter attackers, Automatic video recording, Voice command activation, Apple Watch integration

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Defapp Personal Security Pro | $2.99 | per year |


## Frequently asked questions

### Is Ziferblat Admin free?

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

### Is Defapp free?

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

### Do Ziferblat Admin or Defapp have ads?

Neither Ziferblat Admin nor Defapp shows ads.

### Which is updated more often, Ziferblat Admin or Defapp?

Ziferblat Admin ships an update monthly, and Defapp fortnightly. Most recently, Ziferblat Admin was updated on October 9, 2026 and Defapp on October 22, 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.*