Fin's Fish Guide
Identify fish, log your catch
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Fin's Fish Guide is your personal fish guide for diving, snorkelling, fishing and spearfishing, with a database of 12,500+ species worldwide.
Works offline too: every species is built into the app, so your guide comes along wherever you go. At sea, at the waterside or on holiday.
IDENTIFY YOUR FISH
Describe what you saw in your own words ("snake-shaped, slippery, in the Rhine") and Fin finds the species. Take a photo and let Fin recognise it. Or answer seven multiple-choice questions and work your way to the answer.
YOUR LOGBOOK
Record every sighting with a spot on the map, a date, details and your own photo. Build your own lists (Spotted, Caught, Favourites or create your own) and watch your progress grow.
BUDDIES
Follow other fish lovers, share your sightings and react to theirs. Your exact spot stays private: others only see the area, unless you choose to share it with your approved buddies. Start a club with your diving school or fishing crew.
EXPLORE BY AREA
Draw an area on the world map and discover which species live there, from the North Sea to the Mediterranean and far beyond.
LEARN WITH FIN
Practise identifying species with quizzes, by collection or by area. Fin gives you tips along the way.
Every species page is packed with details: identification features, habitat, season, edibility, conservation status (IUCN) and even first aid for dangerous species.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Challenge a friend: share a quiz on WhatsApp and your friend gets exactly the same questions.
- A fresh look for the Learn page.
- Guess the fish now explains the rules before you start.
- Search by area: type a sea, river, country or region on Home.
The developer, Sevenster Growth BV, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Contact Info
- User Content
- Search History
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Sevenster Growth BV
- Size
- 107 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contests
Contains
Messaging and Chat
User-Generated Content
Social Media
- Copyright
- © 2026 Sevenster Growth BV