Space Station Passes vs TurtleOps
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Space Station Passes
This app predicts when the International Space Station and Tiangong will pass over your location. It offers detailed sky charts, timely notifications, and a night mode for optimal viewing. Track over 4000 satellites with real-time sky views.
- Satellite pass prediction
- Interactive sky chart
- Customizable notifications
- Night mode
- Real-time satellite tracking
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Know when to look up—and where to look. Space Station Passes helps you spot the International Space Station, Tiangong, and other satellites from your chosen location. Plan your next observation with pass forecasts, interactive sky charts, and reminders. • Find your next visible pass: See upcoming passes, their timing, and how high each satellite will appear above the horizon. • Follow the path across the sky: Explore interactive charts with stars, constellations, the Milky Way, and the Moon. • Know the key moments: Check when a satellite rises, reaches its highest visible point, and disappears from view. • Set a reminder: Schedule an alert for the pass you want to watch. • Explore beyond the space stations: Browse thousands of satellites, including bright satellites and recent launches. Explore the live planetarium in the Sky now tab. Search passing satellites, filter by distance or illumination, follow their paths, and report the brightness you observe.
TurtleOps
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TurtleOps is a professional field tool for sea turtle monitoring and conservation. Built for nighttime beach surveys, multi-volunteer teams, and research-grade data. Designed for conservation organizations, research teams, and authorized volunteers participating in permitted sea turtle monitoring programs. • Dark, red-light interface optimized to preserve night vision in the field • Structured turtle encounter forms with three-state tag inspection, PIT barcode scanning, photo capture, and GPS-tagged observations • Offline-first: drafts auto-save and sync when coverage returns • Multi-organization support with role-based access and Row-Level-Security data isolation • Bob, an in-app AI assistant for turtle lookups, research notes, and live weather/tide/moon context • Auto-generated one-page PDF report for every observation, emailed to your team • Survey session tracking with check-in / check-out, team activity feed, and Beach Chat for coordination • Photos saved locally with iOS Files app access for redundant backup
Screenshots
Verdict
The clearest difference is update cadence: Space Station Passes at every 2 days against TurtleOps's every 5 weeks. TurtleOps's advantage is iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support 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.
Space Station Passes ships an update every 2 days, TurtleOps every 5 weeks. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.
| Parameter | Space Station Passes | TurtleOps |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 216 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Sihao Lu | Christopher Johnson |
In-app purchases
Space Station Passes
No in-app purchases
TurtleOps
No in-app purchases
Questions
Is Space Station Passes free?
Is TurtleOps free?
Do Space Station Passes or TurtleOps have ads?
Which is updated more often, Space Station Passes or TurtleOps?
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