CastLog: Carp Fishing Diary

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Everyone
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Everyone
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About this app

CastLog is a fishing diary for UK anglers. Log every catch, see if this weekend is worth going, and build a record of what works at your water.

Open the app and start logging straight away. No account needed. Sign in later with Google or email and your diary comes with you.

YOUR FISHING LOG
• Log catches with photo, weight, length, bait, method and swim
• Personal bests by species, water and method, worked out for you
• Stats that show what is working: bait, conditions and time of day
• A species log for carp, pike, perch, tench, bream, roach, barbel, bass and more
• Works on the bank with no signal and syncs when you are back

WORTH GOING THIS WEEKEND?
• Weather, pressure trend and a bite score for your water
• Saturday and Sunday forecast on the home screen, with a Friday reminder if you want one
• River levels from the Environment Agency, rising or falling
• High and low tides for coastal and sea fishing spots
• Moon phase

PHOTO FISH ID
Not sure what you caught? Take a photo and CastLog suggests the species and estimates its size. 3 free photo IDs a day.

TRIP PLANNER
Pick a water and a day and CastLog builds a session plan: likely windows, tactics, bait and a tackle list, using your own log and the forecast. 1 free plan a day.

AM I LEGAL?
Rod licence reminder, close seasons for coarse fishing, and bass rules, so you know what you can keep.

MY DOCUMENTS
Keep your rod licence and club cards in one place, ready to show a bailiff.

SHARE YOUR CATCH
Turn a catch into a picture for Instagram, Facebook or TikTok, and read spot notes from other anglers.

PRIVACY
Your catches, photos and notes are yours. Photos are only sent for identification when you tap Identify, and are not used to train models. We do not sell your data.

Questions or ideas: anthony@ajsoftwaredev.org
Privacy policy: https://castlog.co.uk/privacy
Fishing log for carp, pike and coarse anglers: catches, weather, river levels
Updated on
Nov 4, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Location, Personal info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

CastLog is now on Android. Log your catches, check this weekend's weather, tides and river levels, and sign in with Google to bring your diary across.
Content rating
Everyone
Users Interact, In-App Purchases
Learn more

App support

About the developer
AJ SOFTWARE DEVELOPMENT LIMITED
anthony@ajsoftwaredev.org
19 Vale Gardens Ince WIGAN WN3 4JD United Kingdom
+44 7429 197104

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