StarLoc vs AstroPup Sky
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StarLoc
This app provides precise GPS coordinates, altitude, and time data in a night-friendly interface for astronomers. It offers essential information for telescope alignment and observation, with a focus on preserving night vision.
- Night-friendly dark theme
- Accurate latitude and longitude (DMS)
- Decimal coordinate support
- Real-time GPS updates
- Local, UTC, and offset time
- Elevation in meters and feet
- Horizontal and vertical accuracy
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StarLoc is a clean, distraction-free GPS tool designed specifically for stargazing. Get accurate latitude, longitude, altitude, and time in formats ready for telescope alignment all in a night-friendly interface. Built for the Night Sky • Unlike standard GPS apps, StarLoc uses a dark theme with red and green text to help preserve your night vision during astronomy sessions. Accurate Location Data • Latitude & Longitude (DMS format) • Decimal coordinates for quick entry • Real-time GPS updates • High-accuracy positioning data Time & Alignment Ready • Local time (12-hour & 24-hour) • UTC time and offset • Date display for precise telescope setup Altitude & Accuracy • Elevation in meters and feet • Horizontal and vertical accuracy readings Simple, focused and reliable. StarLoc provides the essential data you need to align your telescope and start observing. Perfect for backyard astronomers and dark-sky explorers alike.
AstroPup Sky
This application provides a unique sky chart for astrophotographers, displaying celestial object visibility for an entire night. It allows users to personalize their view with custom horizons and receive clear-sky notifications for preferred observing locations.
- All-sky, all-night object visibility
- Object rise and set times
- Personalized horizon views
- Clear-sky notifications
- Supports custom horizon files
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AstroPup Sky is a unique sky chart for astrophotographers. Instead of displaying a single point in time, AstroPup Plan displays the entire sky for an entire night. Celestial objects are fixed but the horizon is in motion, allowing you to determine the time and hours every object is visible. * All-sky, all-night views of object visibility, rise and set times * Personalize your view by adding a horizon file from AstroPup Horizon, N.I.N.A. or Stellarium. * Clear-sky notifications for your favorite observing locations
Screenshots
Verdict
The clearest difference is monetization model: AstroPup Sky at free against StarLoc's paid. AstroPup Sky also leads on update cadence (weekly vs every 2 months). StarLoc's advantage is ratings volume (3 vs 1) and iOS requirement (17.0 vs 26.0). On price, rating, ads and in-app purchases 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.
On the App Store both sit at effectively the same score — 5.0 for StarLoc against 5.0 for AstroPup Sky. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
StarLoc ships an update every 2 months, AstroPup Sky weekly. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.
| Parameter | StarLoc | AstroPup Sky |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Schaich | Aaron Freimark |
Customer experience
StarLoc
AstroPup Sky
In-app purchases
StarLoc
No in-app purchases
AstroPup Sky
No in-app purchases
