# ZDL vs D1 Journal

The clearest difference is update cadence: ZDL at every 4 months against D1 Journal's every 54 months. D1 Journal's advantage is iOS requirement (12.4 vs 14.0). 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.

ZDL ships an update every 4 months, D1 Journal every 54 months. The most recent releases landed on June 1, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | ZDL | D1 Journal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zdl/id1415744847/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 54 months |
| Monetization | Free | — |
| Size | 23 MB | 4 MB |
| Requires iOS | 14.0 | **12.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Blackwired Pte Ltd.](https://appshunter.io/developer/1642378647) | [Ankush Girotra](https://appshunter.io/developer/1330355495) |

## What reviewers say

### ZDL

[App page](https://appshunter.io/ios/app/zdl/id1415744847)

This platform offers real-time cyber-attack prevention by providing a unique view of adversary preparations. It aims to proactively safeguard enterprises from cyber threats before they occur.

**Highlights:** Proactive cyber-attack prevention, Real-time adversary monitoring, Global cyber observatory, Enterprise-level cyber-warfare capability, Performance updates and bug fixes

**Features:** macOS Compatibility

**In-app purchases:** none


### D1 Journal

[App page](https://appshunter.io/ios/app/d1-journal/id1477148454)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZDL free?

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

### Is D1 Journal free?

D1 Journal is free to download, with no in-app purchases.

### Do ZDL or D1 Journal have ads?

Neither ZDL nor D1 Journal shows ads.

### Which is updated more often, ZDL or D1 Journal?

ZDL ships an update every 4 months, and D1 Journal every 54 months. Most recently, ZDL was updated on June 1, 2026 and D1 Journal on May 19, 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.*