AimSat vs Tracker APRS
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
AimSat
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Point your phone - or your antenna - at any satellite in real time. AimSat gives you live azimuth and elevation for over 50 satellites: the International Space Station, MUOS military UHF birds, WGS broadband relays, amateur AMSAT passes, weather satellites, and more. WHAT IT DOES - Live sky position (azimuth + elevation) updated every second from your GPS - SGP4/SDP4 orbital propagation - the same math NASA uses, running on-device - Antenna alignment mode: hold your phone like a tray, tilt it up, and the crosshair tells you exactly where to point - Pass notifications: get alerted before a satellite rises over your horizon - Garmin watch support: az/el values mirror to your wrist hands-free - Filter by category: ISS, Amateur, Weather, GEO, MUOS, WGS - Pin, hide, and sort satellites to match your workflow - Full ground-track map with sub-satellite point AIMSAT PRO Upgrade once ($2.99) and unlock the 7-day pass planner - see every satellite window for the full week ahead, export passes to your calendar, and plan before you're in the field. No subscription, ever. BUILT FOR OPERATORS Whether you're a ham radio operator chasing FM satellites, a SATCOM technician aligning a terminal, or just someone who wants to wave at the ISS - AimSat has the precision you need without the bloat you don't. PRIVACY Your location never leaves your device. No accounts, no analytics, no tracking. Orbital data is fetched from CelesTrak and Space-Track; everything else runs offline. Map data (c) OpenStreetMap contributors, under the Open Database License (ODbL).
Tracker APRS
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Stay visible. Stay connected. Tracker APRS is the essential tool for amateur radio operators, geolocation enthusiasts, and Civil Defense volunteer teams. Designed for simplicity and efficiency, our app allows you to send your GPS coordinates directly to the global APRS-IS (Automatic Packet Reporting System) network via mobile internet. Whether on field expeditions, ham radio events, or critical humanitarian aid operations, Tracker APRS ensures your position is reported reliably and constantly. Key Features: Intuitive Configuration: Get up and running in minutes. Enter your Callsign and Passcode to start tracking. Icon Customization: Choose the table (primary or secondary) and the symbol that best represent your activity or vehicle. Status Messages: Customize the text that accompanies your position to report your current situation or mission. Real-Time Monitoring: Follow all TCP/IP communication with the APRS server directly on the app screen, ensuring total transparency over packet delivery. Robust Connection: Integrated automatic reconnection system, ensuring that tracking continues even after temporary signal drops. Optimized for Civil Defense: The ideal tool for search, rescue, and mapping operations, allowing the Command Center to monitor volunteer teams in the field. Why use Tracker APRS? Minimalist Interface: Focused on what matters most to the operator in the field. Low Consumption: Designed to work efficiently while maintaining connection stability. Safety & Security: Keep central coordination informed about the exact location of each unit in real time. Note: Continued use of GPS running in the background can dramatically decrease battery life.
Screenshots
Verdict
The clearest difference is device support: AimSat at 3 against Tracker APRS's 1. AimSat also leads on iOS requirement (13.0 vs 18.6). On price, update cadence, ads and in-app purchases 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.
Both ship on a similar rhythm, roughly daily. The most recent releases landed on September 12, 2026 and July 20, 2026 respectively.
| Parameter | AimSat | Tracker APRS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily | Daily |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 13.0 β better | 18.6 |
| Further details β not scored | ||
| Size | 23 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | ZACHARY AARON CALDWELL | Ricardo Aurelio Seco |
In-app purchases
AimSat
No in-app purchases
Tracker APRS
No in-app purchases





