# VerbinderApp Calendar vs Modbus Viewer

The clearest difference is update cadence: Modbus Viewer at every 2 days against VerbinderApp Calendar's fortnightly. Modbus Viewer also leads on iOS requirement (18.5 vs 26.0). 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.

VerbinderApp Calendar ships an update fortnightly, Modbus Viewer every 2 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | VerbinderApp Calendar | Modbus Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/verbinderapp-calendar/id6736867611/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | — |
| Size | 45 MB | 7 MB |
| Requires iOS | 26.0 | **18.5** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [VerbinderApp UG (haftungsbeschraenkt)](https://appshunter.io/developer/1773578106) | [Erdem Bilgicer](https://appshunter.io/developer/1824808762) |

## What reviewers say

### VerbinderApp Calendar

[App page](https://appshunter.io/ios/app/verbinderapp-calendar/id6736867611)

Easily schedule events with people from your phone contacts without needing email addresses or usernames. Send invitations directly, allow recipients to accept or decline, and sync plans with existing calendars. Ideal for coordinating casual meetups, appointments, and family gatherings.

**Highlights:** Invite from phonebook, Accept/decline event invitations, Create time polls, Use existing calendars, Private by design, Free for everyday planning

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

**In-app purchases:** none


### Modbus Viewer

[App page](https://appshunter.io/ios/app/modbus-viewer/id6748247211)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VerbinderApp Calendar free?

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

### Is Modbus Viewer free?

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

### Do VerbinderApp Calendar or Modbus Viewer have ads?

Neither VerbinderApp Calendar nor Modbus Viewer shows ads.

### Which is updated more often, VerbinderApp Calendar or Modbus Viewer?

VerbinderApp Calendar ships an update fortnightly, and Modbus Viewer every 2 days. Most recently, VerbinderApp Calendar was updated on October 25, 2026 and Modbus Viewer on October 28, 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.*