# Callsign vs Marthoma App

The clearest difference is update cadence: Marthoma App at weekly against Callsign's every 2 months. Callsign's advantage is iOS requirement (12.4 vs 16.0). 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.

Callsign ships an update every 2 months, Marthoma App weekly. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Callsign | Marthoma App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (6 ratings)](https://appshunter.io/ios/app/callsign/id811368225/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 15 MB | 33 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Callsign Inc](https://appshunter.io/developer/720208183) | [Marthoma](https://appshunter.io/developer/1639657996) |

## What reviewers say

### Callsign

[App page](https://appshunter.io/ios/app/callsign/id811368225)

This app allows users to securely sign into their organization's protected applications. It is designed to keep your identity and data safe. Setup typically takes 3-5 minutes.

**Highlights:** Securely sign into applications, Identity and data protection, Employer-specific access, In-app support, Quick setup

**In-app purchases:** none


### Marthoma App

[App page](https://appshunter.io/ios/app/marthoma-app/id6752260482)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Callsign free?

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

### Is Marthoma App free?

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

### Do Callsign or Marthoma App have ads?

Neither Callsign nor Marthoma App shows ads.

### Which is updated more often, Callsign or Marthoma App?

Callsign ships an update every 2 months, and Marthoma App weekly. Most recently, Callsign was updated on October 21, 2026 and Marthoma App on October 6, 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.*