Lumen vs ISS Tracker
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Lumen
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Lumen is a beginner-focused telescope guide designed for real observation sessions. It helps you set up your telescope correctly, choose what to observe, and use the right magnification β without overwhelming you. - Set up your telescope properly Follow a guided setup wizard to reduce common beginner mistakes like poor leveling or incorrect mount configuration. - Choose what to observe Start with beginner-friendly objects like the Moon, Jupiter, and Saturn. - Use the right eyepiece Based on your telescope and accessories, Lumen calculates all possible magnification combinations and recommends the most suitable one. - Understand what youβre seeing Get short, clear explanations connected directly to your current observation. - Preserve your night vision Optional red light mode designed for outdoor night use. If you bought a telescope and want to actually see something meaningful, Lumen helps you get there.
ISS Tracker
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ISS Tracker is a beautifully designed way to follow the International Space Station (ISS) in real time. Built for space enthusiasts, sky watchers, students, and anyone curious about what is passing overhead, ISS Tracker brings live orbital tracking, visible pass predictions, live camera feeds, and real-time telemetry into a clean, futuristic experience. Follow the ISS on a live map, see where it is above Earth right now, and explore its orbit with a cyber-inspired interface designed for clarity. From glowing orbit paths to live space views and precise telemetry, ISS Tracker makes complex orbital data feel simple, visual, and easy to understand at a glance. Key Features β’ Live ISS Tracking See the real-time position of the International Space Station on a map and follow its orbital path around Earth. β’ Visible Pass Predictions Check when the ISS may be visible from your location, including pass time, duration, and viewing elevation. β’ Live Space Camera Feeds Watch live video streams from cameras aboard the ISS when feeds are available, including breathtaking views of Earth and sunrise from orbit. β’ Real-Time Telemetry View current altitude, speed, latitude, and longitude in a simple, readable format. β’ Futuristic Space-Focused Design ISS Tracker is designed with a clean sci-fi dashboard style, making orbital data feel focused, immersive, and easy to explore. Whether you want to catch the ISS passing overhead, watch Earth from orbit, or simply know where the station is right now, ISS Tracker makes space feel closer.
Screenshots
Verdict
The clearest difference is ads: Lumen at none against ISS Tracker's shown. ISS Tracker's advantage is iOS requirement (16.0 vs 18.6). On price, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Lumen | ISS Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | β |
| Ads | No β better | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 | 16.0 β better |
| Further details β not scored | ||
| Size | 1 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Francesco Chiusolo | Beijing Zhongmeng Intelligent Technology Co., Ltd |
In-app purchases
Lumen
No in-app purchases
ISS Tracker
No in-app purchases









