# ZZL vs e

The clearest difference is update cadence: ZZL at every 2 weeks against e's every 22 months. ZZL also leads on iOS requirement (15.6 vs 17.2). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

ZZL ships an update every 2 weeks, e every 22 months. The most recent releases landed on September 13, 2026 and July 17, 2026 respectively.

## The numbers

| Metric | ZZL | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.6 (5 ratings)](https://appshunter.io/ios/app/e-kartoteka/id1440618758/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | **13.3% of reviews** | 11.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 22 months |
| Monetization | Free | Free |
| Size | 77 MB | 9 MB |
| Requires iOS | **15.6** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kamsoft S.A.](https://appshunter.io/developer/988750703) | [MIESZCZANIN INFORMATYKA Sp. z o. o.](https://appshunter.io/developer/1440618757) |

## What reviewers say

### ZZL

[App page](https://appshunter.io/ios/app/zzl/id1067311096)

This mobile application allows users to access and manage reports from the KS-ZZL system. It provides a convenient way to view financial and operational data on the go.

**Highlights:** Access KS-ZZL system reports, Mobile report management, View financial data, View operational data

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

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-kartoteka/id1440618758)

Manage your property finances and communicate with your building management and neighbors. Access billing information, report issues, and stay updated on community announcements and documents.

**Highlights:** Property and community information, Billing and payment tracking, Media fee settlements, Communication with property manager, Issue reporting, Community bulletin board and forum, Access to documents and resolutions

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

**In-app purchases:** none


## Frequently asked questions

### Is ZZL free?

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

### Is e free?

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

### Do ZZL or e have ads?

Neither ZZL nor e shows ads.

### Which is updated more often, ZZL or e?

ZZL ships an update every 2 weeks, and e every 22 months. Most recently, ZZL was updated on September 13, 2026 and e on July 17, 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.*