# Sidus Link vs 4th Ave Train Spotter

The clearest difference is review sentiment: 4th Ave Train Spotter at 100% against Sidus Link's 62%. 4th Ave Train Spotter also leads on rating (4.9 vs 4.3) and iOS requirement (13.0 vs 15). Sidus Link's advantage is update cadence (every 2 weeks vs every 19 months) and ratings volume (626 vs 27). 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.

4th Ave Train Spotter holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Sidus Link has 626 ratings behind it against 27, so its average is the more settled of the two. Written reviews point the same way: 62% of Sidus Link's written reviews are positive against 100% of 4th Ave Train Spotter's.

Sidus Link ships an update every 2 weeks, 4th Ave Train Spotter every 19 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sidus Link | 4th Ave Train Spotter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (626 ratings)](https://appshunter.io/ios/app/sidus-link/id1471951977/reviews) | **[4.9 (27 ratings)](https://appshunter.io/ios/app/4th-ave-train-spotter/id1490706781/reviews)** |
| Number of ratings | **626** | 27 |
| Positive reviews | 61.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 19 months |
| Monetization | Free | Free |
| Size | 381 MB | 11 MB |
| Requires iOS | 15 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sidus Link Ltd.](https://appshunter.io/developer/1546027954) | [Cohub, LLC](https://appshunter.io/developer/1400475289) |

## What reviewers say

### Sidus Link

[App page](https://appshunter.io/ios/app/sidus-link/id1471951977)

Control film lighting fixtures directly from your mobile device. This app offers advanced modes for white light, gels, color, and effects, with features for scene setup and collaboration. It supports over 100 fixtures and simplifies complex lighting workflows.

**Highlights:** Sidus Mesh Intelligent Lighting Network, White Light, Gel, Color, and Effect Modes, Unlimited Presets and QuickShots, On-set Workflow Management, Multi-device Control, Sidus Cloud and Creative Collaboration

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Intuitive and easy to use
- 🔒 Seamless connectivity
- 💡 Powerful lighting control features
- 🎨 Excellent color management
- 🌟 Comprehensive ecosystem integration

**What reviewers complain about**

- 🐛 Occasional connectivity issues
- 🔁 Frequent need to reconnect
- 🕰️ Slow response times
- 🔒 Unnecessary password requirements
- 🤯 Confusing UI for advanced features

**Reported bugs**

- App crashes on launch
- Inability to save/restore light settings
- Inconsistent behavior when switching devices

**Requested features**

- Artnet support for lighting automation
- Siri/voice control integration
- Dedicated desktop/tablet app
- Improved background operation and reconnection
- More comprehensive tutorials and documentation


### 4th Ave Train Spotter

[App page](https://appshunter.io/ios/app/4th-ave-train-spotter/id1490706781)

This app alerts Nashville residents when trains are blocking 4th Ave or Chestnut St. It uses deep learning and statistical models to monitor rail traffic and provide advance warnings, helping you avoid delays and reroute effectively.

**Highlights:** Real-time train crossing alerts, Monitors 4th Ave and Chestnut St., Deep learning traffic analysis, Advance warning system, Helps avoid delays, iOS device notifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sidus Link free?

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

### Is 4th Ave Train Spotter free?

4th Ave Train Spotter is free to download, with no in-app purchases.

### Which has better reviews, Sidus Link or 4th Ave Train Spotter?

4th Ave Train Spotter is rated higher. Sidus Link averages 4.3 out of 5 from 626 ratings, while 4th Ave Train Spotter averages 4.9 from 27 ratings.

### Do Sidus Link or 4th Ave Train Spotter have ads?

Neither Sidus Link nor 4th Ave Train Spotter shows ads.

### Which is updated more often, Sidus Link or 4th Ave Train Spotter?

Sidus Link ships an update every 2 weeks, and 4th Ave Train Spotter every 19 months. Most recently, Sidus Link was updated on October 21, 2026 and 4th Ave Train Spotter 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.*