# Data Leek vs C.SIGN

The clearest difference is ads: C.SIGN at none against Data Leek's shown. C.SIGN also leads on update cadence (every 2 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Data Leek ships an update every 3 months, C.SIGN every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Data Leek | C.SIGN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/data-leek/id1465854454/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 39 MB | 162 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Devrush](https://appshunter.io/developer/1135880647) | [CMC Technology and Solution Company Limited](https://appshunter.io/developer/1498575851) |

## What reviewers say

### Data Leek

[App page](https://appshunter.io/ios/app/data-leek/id1465854454)

Check if your email addresses or passwords have been compromised in online data breaches. Receive timely notifications to stay informed about potential security risks. The app supports offline access and multiple languages.

**Highlights:** Check email breaches, Check password breaches, Breach notifications, Dark Mode, Offline access, Multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none


### C.SIGN

[App page](https://appshunter.io/ios/app/csign/id6443462181)

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

**In-app purchases:** none


## Frequently asked questions

### Is Data Leek free?

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

### Is C.SIGN free?

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

### Do Data Leek or C.SIGN have ads?

Data Leek shows ads; C.SIGN does not.

### Which is updated more often, Data Leek or C.SIGN?

Data Leek ships an update every 3 months, and C.SIGN every 2 weeks. Most recently, Data Leek was updated on October 24, 2026 and C.SIGN on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*