# Signal Watcher vs Interra

The clearest difference is update cadence: Interra at weekly against Signal Watcher's every 6 weeks. 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.

Signal Watcher ships an update every 6 weeks, Interra weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Signal Watcher | Interra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/interra/id6792973468/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 7 MB | 47 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [DefenseGraph, Inc.](https://appshunter.io/developer/6782604612) | [HAKOB DARBINYAN](https://appshunter.io/developer/6792973470) |

## What reviewers say

### Signal Watcher

[App page](https://appshunter.io/ios/app/signal-watcher-defense-graph/id6782604610)

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

**In-app purchases:** none


### Interra

[App page](https://appshunter.io/ios/app/interra/id6792973468)

Explore global events through an interactive 3D globe. Get AI-generated news summaries and dive into local coverage. Track major stories, disasters, and country data.

**Highlights:** Interactive 3D globe exploration, AI-generated news summaries, Country-specific news and data, Breaking news and disaster alerts, Save stories for later, Search by country and topic

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

**In-app purchases:** none


## Frequently asked questions

### Is Signal Watcher free?

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

### Is Interra free?

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

### Do Signal Watcher or Interra have ads?

Neither Signal Watcher nor Interra shows ads.

### Which is updated more often, Signal Watcher or Interra?

Signal Watcher ships an update every 6 weeks, and Interra weekly. Most recently, Signal Watcher was updated on October 23, 2026 and Interra on October 24, 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.*