Sidus Link vs 4th Ave Train Spotter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sidus Link
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.
- 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
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Sidus Link provides a brand-new solution for film lighting control. Based on proprietary Sidus Mesh technology, it enables direct connection and control of over 100 film lighting fixtures using mobile devices like smartphones. Sidus Link integrates the most widely used and professional control functions and modes in the lighting field, including White Light Mode, Gel Mode, Color Mode, Effect Mode, and unlimited preset functions. With built-in Sidus Cloud and Creative Collaboration Group features, it simplifies workflows to help gaffers, DPs, and filmmakers quickly complete scene and lighting setups. Language Support: English Simplified Chinese Traditional Chinese Japanese Portuguese French Russian Vietnamese German 1. Sidus Mesh Intelligent Lighting Network 1.Decentralized film lighting network – No additional network equipment (gateways or routers) required; connect and control lighting fixtures directly via smartphones or other smart devices. 2.Multi-layer encryption ensures a secure and reliable lighting network, preventing interference and misoperation. 3.Supports 100+ professional lighting fixtures. 4.Multiple control devices (smartphones or other smart devices) can simultaneously control the same lighting network. 2. Basic Functions Supports four major control modes: White / Gel / Color / Effect. 2.1. White Light 1.CCT – Supports quick adjustment and touchpad-based control. 2.Source Type – Built-in common white light source library for fast selection. 3.Source Match – Quickly match any scene or cct 2.2. Gel Mode 1.Supports traditional CTO/CTB adjustments used in the film industry. 2.300+ Rosco® & Lee® lighting gels.Rosco® and Lee® trademarks and copyrights belong to their respective owners. 2.3. Color Mode 1.HSI & RGB modes for quick color adjustments. 2.XY Chromaticity Mode supports A Gamut (similar to BT.2020), DCI-P3, and BT.709 color spaces. 3.Color Picker – Instantly sample any visible color. 2.4. Effects Supports fine-tuning and control of all built-in lighting effects in Aputure fixtures. 2.5. Presets & QuickShots 1.Unlimited local presets. 2.QuickShot Scene Snapshots – Save and recall lighting setups instantly. 3. Advanced Effects Sidus Link App supports: PICKER FX MANUAL MUSIC FX Magic Program Pro/Go Magic Infinity FX 4. Compatibility 1.Sidus Link App supports connection and control of all new Aputure film lights, such as LS 300d II, MC, etc. 2.Legacy Aputure lights will require additional accessories for app connectivity and control.* 3.Supports OTA management – Network firmware and lighting updates for continuous optimization. 5. Sidus On-Set Lighting Workflow On-set workflow management – Create scenes, add devices, and quickly complete lighting setups. Console Workspace Mode – Quickly configure scenes and lighting. Group Management – Fast grouping and control of multiple fixtures. Power Management – Real-time monitoring of battery levels and remaining runtime. Device-Controller Parameter Sync – Instantly retrieve detailed device status and settings. QuickShot Scene Snapshots – Save and recall lighting setups. CC Collaboration Group Workflow Supports multi-user collaboration for controlling and adjusting lighting setups. 6. Sidus Cloud Services Free cloud storage for presets, scenes, and effects (requires compatible hardware/software; existing devices will be supported via firmware updates). CC Collaboration Group Workflow Share lighting networks with group members. Supports quick sharing via temporary verification codes. 7. UX Design Dual UI modes – Precise parameter control & WYSIWYG (What You See Is What You Get). Fixture Locator Button – Added to device lists and group management for quick identification. Onboarding guides – Clear instructions on adding/resetting devices.
4th Ave Train Spotter
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.
- Real-time train crossing alerts
- Monitors 4th Ave and Chestnut St.
- Deep learning traffic analysis
- Advance warning system
- Helps avoid delays
- iOS device notifications
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Nashville residents — Know in advance if trains are blocking 4th Ave or Chestnut St. Cohub's deep learning systems continuously monitor train traffic at these busy rail crossings. Statistical models evaluate the present situation looking for train signals and/or the presence of actual trains. When true positives are detected, the system sends alerts to your iOS device, giving you time to reroute. Saves time and minimizes expletive outbursts.
Screenshots
Verdict
The clearest difference is rating: 4th Ave Train Spotter at 4.8 against Sidus Link's 4.3. 4th Ave Train Spotter also leads on review sentiment (100% vs 70%) 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 24). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Sidus Link has 626 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 70% 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 August 26, 2026 and July 5, 2026 respectively.
| Parameter | Sidus Link | 4th Ave Train Spotter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (626 ratings) | 4.8 (24 ratings) — better |
| Positive reviews | 69.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 626 — better | 24 |
| Update frequency | Every 2 weeks — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15 | 13.0 — better |
| Further details — not scored | ||
| Size | 381 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Sidus Link Ltd. | Cohub, LLC |
Customer experience
Sidus Link
4th Ave Train Spotter
Bugs and requests
Sidus Link
Reported bugs
3 issues- App crashes on launch
- Inability to save/restore light settings
- Inconsistent behavior when switching devices
Requested features
5 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sidus Link
No in-app purchases
4th Ave Train Spotter
No in-app purchases
Questions
Is Sidus Link free?
Is 4th Ave Train Spotter free?
Which has better reviews, Sidus Link or 4th Ave Train Spotter?
Do Sidus Link or 4th Ave Train Spotter have ads?
Which is updated more often, Sidus Link or 4th Ave Train Spotter?
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