Astro Kit vs ScopeTool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Astro Kit
This utility app assists in telescope setup by providing essential information like GPS coordinates and universal time. It also includes a compass and calculates the local hour angle for Polaris. Designed for amateur astronomers, it simplifies the alignment process.
- GPS coordinates
- Compass functionality
- Universal time display
- Polaris local hour angle computation
- Telescope alignment assistance
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Astro Kit is intended to provide useful informations while setting up a telescope. - gps coordinates - compass - universal time - compute polaris local hour angle
ScopeTool
This app assists with telescope setup and alignment, providing tools like a compass, level, and calculators for celestial objects. It allows manual or GPS-based location input and offers customizable tool visibility for use in low light.
- Compass and level
- Polaris hour angle calculator
- Jupiter and Saturn moon positions
- Red/white flashlight with timer
- Manual or GPS location input
- Customizable tool visibility
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ScopeTool by Krydo helps as you set up, align and use your telescope for a good night's viewing. It includes the tools • Compass & level • Polaris hour angle and transit calculator • Positions for the main satellite moons of Jupiter and Saturn* • Red or white flashlight, with screen lock and timer functions ScopeTool can find your location by either using your device's location services (eg GPS), or you can enter your coordinates manually. The Settings tool allows you to tailor the app to your needs; turn off tools you don't use so it's easy to select the ones you want in the dark. More tools are coming; visit http://scopetool.krydo.com or tweet us on @KrydoDev to keep up with their progress, and let us know what would be useful to you! * For Jupiter, the four Galilean moons are shown. For Saturn, satellites I-VIII are included. A limiting magnitude control allows you to hide objects that are too faint to be seen, so you can match the diagram to what you can see. The location of Jupiter's Great Red Spot and attitude of Saturn's rings are also included.
Screenshots
Verdict
The clearest difference is rating: Astro Kit at 4.6 against ScopeTool's 3.8. Astro Kit also leads on review sentiment (87% vs 50%) and update cadence (every 3 months vs every 9 months). ScopeTool's advantage is iOS requirement (9.0 vs 17.6). On price, ads, in-app purchases and monetization model 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.
Astro Kit holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: Astro Kit has 51 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 87% of Astro Kit's written reviews are positive against 50% of ScopeTool's.
Astro Kit ships an update every 3 months, ScopeTool every 9 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Astro Kit | ScopeTool |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (51 ratings) — better | 3.8 (4 ratings) |
| Positive reviews | 86.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 51 — better | 4 |
| Update frequency | Every 3 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Jérôme Diaz | H Crossley |
Customer experience
Astro Kit
ScopeTool
In-app purchases
Astro Kit
No in-app purchases
ScopeTool
No in-app purchases
