# Heylight vs ISS Tracker

The clearest difference is review sentiment: ISS Tracker at 100% against Heylight's 11%. ISS Tracker also leads on update cadence (weekly vs every 3 weeks). Heylight's advantage is iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Heylight ships an update every 3 weeks, ISS Tracker weekly. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Heylight | ISS Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (19 ratings)](https://appshunter.io/ios/app/iss-tracker-space-station/id6740058138/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | 11.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 92 MB | 15 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Laixin Electronic technology CO.,Ltd](https://appshunter.io/developer/1459369092) | [Lucent Enterprises Ltd.](https://appshunter.io/developer/1448644115) |

## What reviewers say

### Heylight

[App page](https://appshunter.io/ios/app/heylight/id1454998115)

Control and customize your Christmas lights with this application. It offers features for automatic installation, grouping, sharing, and scheduling. Explore various display effects to create the perfect holiday ambiance.

**Highlights:** Automatic installation, Grouping lights, Sharing features, Timing and scheduling, Collection management, Various display effects

**Features:** macOS Compatibility

**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 Heylight free?

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

### Is ISS Tracker free?

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

### Do Heylight or ISS Tracker have ads?

Neither Heylight nor ISS Tracker shows ads.

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

Heylight ships an update every 3 weeks, and ISS Tracker weekly. Most recently, Heylight was updated on October 16, 2026 and ISS Tracker 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.*