# Satellite Tracker ISS Live Map vs Muster

The clearest difference is in-app purchases: Muster at none against Satellite Tracker ISS Live Map's 9. Muster also leads on ads (none vs shown) and update cadence (every 2 days vs monthly). Satellite Tracker ISS Live Map's advantage is ratings volume (388 vs 2). On price and device support there is nothing between them.

Both are free to download. Satellite Tracker ISS Live Map sells 9 in-app purchases, starting at $6.99 per 7 days. Muster asks for nothing beyond the download.

Muster holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Satellite Tracker ISS Live Map has 388 ratings behind it against 2, so its average is the more settled of the two.

Satellite Tracker ISS Live Map ships an update monthly, Muster every 2 days. The most recent releases landed on October 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Satellite Tracker ISS Live Map | Muster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (388 ratings)](https://appshunter.io/ios/app/satellite-tracker-iss-live-map/id6746504191/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/muster-readiness-tracker/id6786010473/reviews)** |
| Number of ratings | **388** | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 91 MB | 28 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Phong Pham](https://appshunter.io/developer/1731047500) | [Muster Readiness LLC](https://appshunter.io/developer/6786010475) |

## What reviewers say

### Satellite Tracker ISS Live Map

[App page](https://appshunter.io/ios/app/satellite-tracker-iss-live-map/id6746504191)

Track satellites and the International Space Station in real-time with accurate orbital paths and visibility forecasts. Learn about space missions and receive custom alerts for upcoming passes. Designed for space enthusiasts and stargazers of all levels.

**Highlights:** Live Satellite & ISS Tracking, Satellite Visibility & Pass Forecasts, Educational Insights, User-Friendly Interface, Custom Alerts

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $6.99 | per 7 days |
| Premium Weekly | $7.99 | per 7 days |
| Premium Monthly | $12.99 | per month |
| Premium Monthly | $14.99 | per month |
| Premium Yearly | $39.99 | per year |
| Premium Yearly | $49.99 | per year |
| Premium Yearly | $59.99 | per year |
| Premium Lifetime | $49.99 | one-time |
| Premium Lifetime | $59.99 | one-time |


### Muster

[App page](https://appshunter.io/ios/app/muster-readiness-tracker/id6786010473)

This app helps U.S. Army Reserve soldiers track their readiness across personnel, training, and medical requirements. It provides a quick overview of what's current, due soon, or overdue, and directs users to the necessary systems for completion. Leaders can also use it to build squad readiness pictures via QR code sharing.

**Highlights:** Readiness tracking (personnel, security, training, fitness, medical), Status at a glance (current, due soon, overdue), Directs to required systems and steps, Logs completed tasks and dates, Leader mode for squad/platoon readiness, QR code status sharing, Local data storage, no account or server

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

**In-app purchases:** none


## Frequently asked questions

### Is Satellite Tracker ISS Live Map free?

Satellite Tracker ISS Live Map is free to download, with in-app purchases available.

### Is Muster free?

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

### Which has better reviews, Satellite Tracker ISS Live Map or Muster?

Muster is rated higher. Satellite Tracker ISS Live Map averages 4.7 out of 5 from 388 ratings, while Muster averages 5.0 from 2 ratings.

### Do Satellite Tracker ISS Live Map or Muster have ads?

Satellite Tracker ISS Live Map shows ads; Muster does not.

### Which is updated more often, Satellite Tracker ISS Live Map or Muster?

Satellite Tracker ISS Live Map ships an update monthly, and Muster every 2 days. Most recently, Satellite Tracker ISS Live Map was updated on October 17, 2026 and Muster on September 30, 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.*