ISS Detector review
A focused astronomy app for ISS, Starlink, and satellite alerts.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
ISS Detector is a mobile astronomy app for predicting visible passes of the International Space Station and other satellites from a user’s location. It suits casual skywatchers, astronomy enthusiasts, and amateur-radio operators who want timely alerts, pass information, and practical conditions for observing objects overhead. The app covers Android, iOS, and macOS, with features including location-based pass predictions, alarms, local weather checks, and orbital information.
The published plans show a Free option with ISS pass predictions, pass alerts, and weather checks. Premium Access adds additional satellite and astronomy tracking features, while ISS Detector Pro includes all extensions, removes ads, and adds satellite, planet, and comet tracking. The paid tiers extend the app beyond basic ISS alerts, but the plan structure varies by platform and region. That makes the Free plan a straightforward entry point, while Premium Access and Pro are intended for users who want broader object coverage or the complete feature set.
ISS Detector’s strongest fit is focused observation rather than general sky exploration. Alongside ISS and Starlink tracking, it supports famous objects, planets, comets, amateur-radio satellites, weather satellites, Doppler-shift information, transmitter details, and satellite pass and orbital data. This breadth within satellite tracking gives radio-oriented observers and satellite watchers useful depth. However, people seeking a broad full-sky astronomy experience may prefer an app centered on wider celestial exploration. Choose ISS Detector for alerts and orbital visibility planning; choose an alternative if satellite observation is not your primary interest.
ISS Detector pros and cons
- Where it wins
- Location-based ISS pass predictions with notifications and alarms
- Weather checks help assess conditions before a sighting
- Tracks Starlink, planets, comets, and amateur-radio satellites
- Where it doesn't
- Its focus is satellite observation rather than full-sky exploration
- Premium purchase structure differs by platform and region
- Advanced tracking features are divided across paid access options
ISS Detector fact sheet, pricing and score →
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