# Z21Updater vs Bedlog

The clearest difference is update cadence: Bedlog at fortnightly against Z21Updater's every 28 months. Z21Updater's advantage is iOS requirement (13.4 vs 18.0). 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.

Z21Updater ships an update every 28 months, Bedlog fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Z21Updater | Bedlog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/z21updater/id1463533460/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 29 MB | 21 MB |
| Requires iOS | **13.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Modelleisenbahn GmbH](https://appshunter.io/developer/533805542) | [Alessandro Emrich](https://appshunter.io/developer/1840016670) |

## What reviewers say

### Z21Updater

[App page](https://appshunter.io/ios/app/z21updater/id1463533460)

Easily update your Z21, z21, z21start, and smartRail devices. The app automatically detects connected hardware and fetches the latest firmware directly from the server when online, simplifying the update process.

**Highlights:** Automatic device recognition, Direct server updates, Simple and functional update process, Supports Z21, z21, z21start, smartRail

**In-app purchases:** none


### Bedlog

[App page](https://appshunter.io/ios/app/bedlog-date-journal/id6782464993)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Z21Updater free?

Z21Updater is free to download, with no in-app purchases.

### Is Bedlog free?

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

### Do Z21Updater or Bedlog have ads?

Neither Z21Updater nor Bedlog shows ads.

### Which is updated more often, Z21Updater or Bedlog?

Z21Updater ships an update every 28 months, and Bedlog fortnightly. Most recently, Z21Updater was updated on November 3, 2026 and Bedlog on November 5, 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.*