# Iridium Chat vs CatchApp | Availability Toggle

The clearest difference is update cadence: CatchApp | Availability Toggle at every 3 weeks against Iridium Chat's every 6 months. CatchApp | Availability Toggle also leads on iOS requirement (16 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.

Iridium Chat ships an update every 6 months, CatchApp | Availability Toggle every 3 weeks. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Iridium Chat | CatchApp | Availability Toggle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/iridium-chat/id6476648492/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 99 MB | 67 MB |
| Requires iOS | 18.0 | **16** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Iridium](https://appshunter.io/developer/634954979) | [Tomer Fayer](https://appshunter.io/developer/1549715713) |

## What reviewers say

### Iridium Chat

[App page](https://appshunter.io/ios/app/iridium-chat/id6476648492)

This app enables real-time, app-to-app instant messaging and image sharing globally via a satellite Wi-Fi device. It offers an always-on messaging experience, group chats, and location sharing.

**Highlights:** Real-time app-to-app messaging, Global satellite network access, Group chats up to 50 people, Image sharing with compression, Location sharing via clickable link, Contact syncing

**In-app purchases:** none


### CatchApp | Availability Toggle

[App page](https://appshunter.io/ios/app/catchapp-availability-toggle/id6738431468)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Iridium Chat free?

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

### Is CatchApp | Availability Toggle free?

CatchApp | Availability Toggle is free to download, with no in-app purchases.

### Do Iridium Chat or CatchApp | Availability Toggle have ads?

Neither Iridium Chat nor CatchApp | Availability Toggle shows ads.

### Which is updated more often, Iridium Chat or CatchApp | Availability Toggle?

Iridium Chat ships an update every 6 months, and CatchApp | Availability Toggle every 3 weeks. Most recently, Iridium Chat was updated on October 21, 2026 and CatchApp | Availability Toggle on October 27, 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.*