Planisphere vs Crab Identifier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planisphere
Explore the cosmos with an interactive sky map. Discover constellations, stars, and celestial objects with detailed information. Track celestial bodies and view the sky from any location and time.
- Interactive sky map with pinch-to-zoom
- Detailed information on celestial objects
- Compass and accelerometer integration
- Searchable database of stars and objects
- Adjustable date, time, and location
- Night Light mode for red tint viewing
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Planisphere is an astronomy application that lets you use pinch and finger gestures to manipulate a map of the sky. As you zoom in finer detail comes into view. You can double tap on objects to get more information. You can use the compass and accelerometer to show the sky in the direction the phone is being held for the selected time. Planisphere shows all 88 constellations and their boundaries, 6096 naked eye stars, the Messier deep sky catalogue, bright NGC objects, the Sun, Moon, planets and the now dwarf planet Pluto. These can be searched and then displayed if above the horizon for the selected time. Rise and setting times are available for all named objects. The date, time and location can be changed. With Location Services you can show the sky as it appears from your exact location or you can click on a world map or select a city. There is also a realtime mode that will update to the current time. You can also set a Night Light' which gives the map a red tint for nighttime viewing. Moon, Mercury, Mars, Venus, Jupiter and Saturn atlases are also available on the App Store.
Crab Identifier
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Discover the fascinating world of marine crustaceans with our powerful AI-powered species recognition app. Whether you're walking along the beach, exploring tide pools, or studying marine life, our app helps you instantly learn about any species you encounter. INSTANT SPECIES RECOGNITION Simply take a photo or upload an image, and our advanced AI technology will analyze it and provide detailed information about the species, including its common name, scientific name, habitat, diet, and fascinating facts. KEY FEATURES Unlimited Recognition Take as many photos as you want and get instant results with our AI-powered analysis engine. Detailed Information Learn about each species' habitat, diet, behavior, and unique characteristics with comprehensive species profiles. Identification History Keep track of all your discoveries with automatic history saving. Revisit past identifications anytime and build your personal species collection. Share Your Discoveries Share your findings with friends, family, or fellow marine enthusiasts directly from the app. Beautiful Interface Enjoy a clean, modern design that makes species recognition simple and enjoyable. Ad-Free Experience Focus on your discoveries without distractions or interruptions. HOW IT WORKS 1. Take a photo with your camera or select one from your library 2. Our AI analyzes the image in seconds 3. Get detailed species information instantly 4. Save to your history and share with others PERFECT FOR - Beach walkers and coastal explorers - Marine biology students and educators - Nature photographers - Tide pool enthusiasts - Ocean lovers and conservation advocates - Families learning about marine life - Fishermen and seafood enthusiasts SUBSCRIPTION INFORMATION Access unlimited species recognition with a subscription: - Weekly: GBP 5.99 per week - Yearly: GBP 19.99 per year (save over 60%) Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription and turn off auto-renewal in your Account Settings after purchase. WHY CHOOSE OUR APP Our app uses the latest artificial intelligence technology to provide accurate species recognition. With a comprehensive database and constantly improving AI models, you'll get reliable information every time. The intuitive interface makes it easy for anyone to use, whether you're a marine biology expert or just curious about ocean life. Start your marine discovery journey today and unlock the secrets of the ocean's most fascinating creatures! Privacy Policy: https://angelapplications.co.uk/privacy-policy/ Terms of Use: https://angelapplications.co.uk/terms-of-use/ Support: support@angelapplications.co.uk
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Verdict
The clearest difference is price: Crab Identifier at Free against Planisphere's $1.99. Planisphere's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement 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
Crab Identifier is free to download; Planisphere costs $1.99 up front. Crab Identifier sells 2 in-app purchases, starting at $5.99 per 7 days. Planisphere asks for nothing beyond the download.
| Parameter | Planisphere | Crab Identifier |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.0 (4 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18 |
| Further details — not scored | ||
| Size | 74 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Julian James | Angel App Publishing Ltd. |
In-app purchases
Planisphere
No in-app purchases
Crab Identifier
- Crab Pro Weekly$5.997 Days
- Crab Pro Yearly$19.991 Year






