# ISS Tracker vs HamSat

The clearest difference is in-app purchases: ISS Tracker at none against HamSat's 1. ISS Tracker also leads on review sentiment (100% vs 67%) and rating (4.7 vs 4.5). HamSat's advantage is update cadence (every 2 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. HamSat sells 1 one-off in-app purchase. ISS Tracker asks for nothing beyond the download.

ISS Tracker holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 19 and 6 respectively. Written reviews point the same way: 100% of ISS Tracker's written reviews are positive against 67% of HamSat's.

ISS Tracker ships an update weekly, HamSat every 2 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ISS Tracker | HamSat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (19 ratings)](https://appshunter.io/ios/app/iss-tracker-space-station/id6740058138/reviews)** | [4.5 (6 ratings)](https://appshunter.io/ios/app/hamsat-ham-satellite-tracker/id6762450814/reviews) |
| Number of ratings | **19** | 6 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 11 MB |
| Requires iOS | **26.0** | 26.4 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Lucent Enterprises Ltd.](https://appshunter.io/developer/1448644115) | [Vasco Barreiros](https://appshunter.io/developer/1451715392) |

## What reviewers say

### ISS Tracker

[App page](https://appshunter.io/ios/app/iss-tracker-space-station/id6740058138)

Monitor the International Space Station's live position and vital telemetry data in real-time. Track its orbit, altitude, velocity, and internal environmental systems. Ideal for space enthusiasts and students interested in space exploration.

**Highlights:** Real-time ISS position tracking, Interactive world map, Altitude and velocity data, Comprehensive telemetry monitoring, Environmental and power system data, Dark mode support

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

**In-app purchases:** none


### HamSat

[App page](https://appshunter.io/ios/app/hamsat-ham-satellite-tracker/id6762450814)

Track satellite passes with real-time azimuth, elevation, and Doppler-corrected frequencies. Features an Apple Watch companion for wrist-based aiming and pass tracking, and allows users to stamp photos with operational data.

**Highlights:** Apple Watch companion for pass tracking and antenna aiming, Live sky dome with real-time satellite arcs, Aim mode with phone compass and haptic feedback, Doppler-corrected frequencies for operating during passes, Photo stamping with callsign, grid, satellite, and UTC time, Offline satellite tracking and propagation, Geostationary satellite tracking

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HamSat Pro | $9.99 | one-time |


## Frequently asked questions

### Is ISS Tracker free?

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

### Is HamSat free?

HamSat is free to download, with in-app purchases available.

### Which has better reviews, ISS Tracker or HamSat?

ISS Tracker is rated higher. ISS Tracker averages 4.7 out of 5 from 19 ratings, while HamSat averages 4.5 from 6 ratings.

### Do ISS Tracker or HamSat have ads?

Neither ISS Tracker nor HamSat shows ads.

### Which is updated more often, ISS Tracker or HamSat?

ISS Tracker ships an update weekly, and HamSat every 2 days. Most recently, ISS Tracker was updated on October 28, 2026 and HamSat on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*