Your water. Your record.

Your fishing, better understood.

CastMate brings your catches, places, sessions and conditions into one private journal. See what your own history can tell you before the next trip.

Android: closed testingiPhone: external TestFlight beta

Illustrative CastMate journal screen with sample catches and weather. The current app may differ.
Made for the way you fish

Keep the detail. Find the pattern.

A useful record takes seconds to start and keeps paying off over time. CastMate connects each outing to the place and conditions around it.

01 / Record

Log the catch

Save species, size, notes, photos and location in your own journal.

02 / Explore

Know your places

Return to saved waters and see your catches on a map.

03 / Plan

Read the conditions

Put weather beside your catch history to help decide when to head out.

04 / Fish

Run a session

Start a trip, follow its duration and keep the day’s catches together.

05 / Together

Share the water

In a shared session, invited anglers can see participants and catches on one live map.

06 / Learn

Use your own history

Insights and forecasts are grounded in the catches you have recorded, and need enough history to be useful.

Privacy by design

Your journal belongs to you.

Catches, saved places and photos are stored on your device. Optional backup puts a copy in your own Google Drive. Shared sessions and services such as weather involve limited data leaving the phone.

Read the privacy policy
A clear boundary

Private by default, shared by choice.

Your journal is not a public profile or social feed. In a shared session, other participants can see your position and session catches; ghost mode can hide your position. The privacy policy explains every external service and data flow.

From today to next time

Simple in the moment. Valuable later.

CastMate is built around the angler’s routine: catch the moment, finish the session, then look back with context.

  1. 01
    Start fishingOpen a solo trip or invite others into a shared session.
  2. 02
    Record what happenedAdd a catch and keep its place, time and conditions together.
  3. 03
    Learn from your recordRevisit the map and compare conditions against your own catches.
Availability

Early access, clearly marked.

Android

In closed testing

CastMate is available to selected Android testers through Google Play closed testing. There is no public Google Play download yet. Contact us to ask about testing access.

Ask about Android testing

Email: info@castmatefishing.com

iPhone

External TestFlight beta available

Apple has approved the external TestFlight beta for iPhone testing. Join through TestFlight; there is no public App Store download yet.

Join iPhone beta on TestFlight
Frequently asked

Good to know.

Do I need an account to keep a fishing journal?

CastMate keeps the journal on your device. The app creates an anonymous Firebase identity for shared sessions. A Google sign-in is used only if you choose Drive backup.

Where does my backup go?

If you enable backup, CastMate writes its backup to an app folder in your own Google Drive. You control that Google account. See the privacy policy for details.

Can my friends see all my catches?

No. In a shared session, participants see the catches you log during that session, along with the information described in the privacy policy. Your full private journal is not a shared feed.

Does the forecast know where fish will bite?

No forecast can promise a catch. CastMate compares conditions with your own logged history; it needs enough catches before it can offer a useful comparison.

How can I delete my data?

Use the deletion action in the app, or follow the steps on the data deletion page if the app is no longer installed.

Go with your own record

Make every day on the water count.

Ask about Android or iPhone testing, or explore how CastMate handles your data first.