# NASA SpaceTime vs ISS Tracker

The clearest difference is update cadence: ISS Tracker at weekly against NASA SpaceTime's every 4 weeks. NASA SpaceTime's advantage is rating (5.0 vs 4.8) and device support (5 vs 2). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NASA SpaceTime holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 7 and 20 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

NASA SpaceTime ships an update every 4 weeks, ISS Tracker weekly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | NASA SpaceTime | ISS Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/nasa-spacetime/id1553555795/reviews)** | [4.8 (20 ratings)](https://appshunter.io/ios/app/iss-tracker-space-station/id6740058138/reviews) |
| Number of ratings | 7 | **20** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 38 MB | 15 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jet Propulsion Laboratory](https://appshunter.io/developer/347075767) | [Lucent Enterprises Ltd.](https://appshunter.io/developer/1448644115) |

## What reviewers say

### NASA SpaceTime

[App page](https://appshunter.io/ios/app/nasa-spacetime/id1553555795)

Track the current time on Mars for NASA's Perseverance and Curiosity rovers. View mission event schedules and operational meetings. Supports Siri integration for quick time queries.

**Highlights:** Mars time display, Earth time display, Rover mission schedules, Operational meeting views, Siri integration

**In-app purchases:** none


### 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


## Frequently asked questions

### Is NASA SpaceTime free?

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

### Is ISS Tracker free?

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

### Which has better reviews, NASA SpaceTime or ISS Tracker?

NASA SpaceTime is rated higher. NASA SpaceTime averages 5.0 out of 5 from 7 ratings, while ISS Tracker averages 4.8 from 20 ratings.

### Do NASA SpaceTime or ISS Tracker have ads?

Neither NASA SpaceTime nor ISS Tracker shows ads.

### Which is updated more often, NASA SpaceTime or ISS Tracker?

NASA SpaceTime ships an update every 4 weeks, and ISS Tracker weekly. Most recently, NASA SpaceTime was updated on November 3, 2026 and ISS Tracker on November 4, 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.*