SPRINGviewer vs StarLoc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SPRINGviewer
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SPRINGviewer enables users to visualize and share model results with both geologists and non-geologists. The app provides an intuitive way to explore datasets generated by the SPRING groundwater model, including finite element meshes, geological structures, and various plots.
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.
Screenshots
Verdict
The clearest difference is update cadence: SPRINGviewer at weekly against StarLoc's every 2 months. SPRINGviewer also leads on device support (3 vs 1). StarLoc's advantage is iOS requirement (17.0 vs 26.0). On price, 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.
SPRINGviewer ships an update weekly, StarLoc every 2 months. The most recent releases landed on September 12, 2026 and August 19, 2026 respectively.
| Parameter | SPRINGviewer | StarLoc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 73 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Torsten Seidel | Daniel Schaich |
In-app purchases
SPRINGviewer
No in-app purchases
StarLoc
No in-app purchases
