Cat Journal Apps Compared: Litterboxd, Cat Collector, and More

Quick answer

• Want a private diary of cats you meet: Litterboxd
• Want a collection your friends can collect too: Cat Collector
• Want a map and field notes on community cats: Whisker Tracker
• Want a social feed with breed guesses: catch (cat tracker)

Litterboxd: the quiet cat diary

Litterboxd is a cat journal in the truest sense, and the name is a cat-nerd pun on the film-logging app. You log each cat you meet with a photo, a star rating, and where you found it, then look back on the record over time. You can create a profile for a cat you see regularly so every encounter with it gathers in one place, and there is a light social layer for following friends and seeing cats from other cities.

It is clean, calm, and personal. The free tier covers the basics, and a paid Pro tier adds extras like up to five photos per encounter, short video clips, and an ad-free view.

Best for: someone who wants a well-kept private record and their own ratings, and who cares less about other people collecting their finds. Where it falls short: the payoff stays with you. Your log is not something friends join in on, and there is no game to it.

Cat Collector: a collection other people join

Cat Collector starts from a different question. Not "how do I record this cat," but "what if this cat became something I keep and share." You photograph a real cat you meet, the app confirms there is a genuine cat in the shot, and it becomes a hand-drawn die-cut trading card carrying your photo, the place you met it, and your name as the finder.

The part that makes it more than a journal is the collecting. Every card has a link. Text it or drop it on your story, and anyone who taps it adds that cat to their own collection. There is a weekly neighborhood Top Cat board for the most-collected local cats, you can see who caught a cat first, and your cats turn into iMessage stickers you can send from the keyboard. It is real cats only, not AI, it is free, and there is no email sign-up.

Best for: someone who wants the cats they meet to become a shareable, collectible set with a bit of friendly neighborhood competition. Where it falls short: it is not on Android, and it is not a caretaker or medical tool. If you need colony health records or a lost-pet database, look at Whisker Tracker or a dedicated lost-pet service.

Whisker Tracker: the field map for caretakers

Whisker Tracker is the most serious of the four about data, and it is the only one on both iPhone and Android. It uses cat facial recognition to help you catalog the same cat across sightings, pins each cat on a map, and stores a photo album, notes, and health or behavior status per cat. It has walk tracking, badges, and a leaderboard. It never makes cat locations public, and each map is private to you.

Best for: anyone semi-serious about the community cats around them, especially colony caretakers and trap-neuter-return volunteers who want structured records and a real map. Where it falls short: all that structure can feel like fieldwork. If you just want the fun of catching and sharing, it may be more form-filling than you were after.

catch (cat tracker): the social feed

catch (cat tracker) is an iPhone app that logs each encounter with a photo, location, and caption, tries to identify the breed on device, drops your finds on a map, and lets you follow friends and like or comment on their cats. It is the most social-network-shaped of the four, a feed built around cat encounters.

The breed guessing is its signature feature and also the thing to hold loosely. Most cats you meet on the street are not pedigreed, so a breed label is usually a confident guess about a cat that is simply a domestic shorthair. If a following-and-liking feed of cat sightings sounds fun, catch delivers exactly that.

Best for: someone who wants a social feed of cat encounters with friends. Where it falls short: take the breed calls with a grain of salt, and know that the encounter is a feed post rather than a keepsake card or a private diary.

A note on CatchCat

You may have seen CatchCat, the game that launched on Android in June 2026 as "Pokemon GO, but for real cats" and began a region-by-region iOS rollout July 16. It photographs a real cat, runs an on-device check that it is a real cat, and turns it into a playable card with AI-generated stats. It looks like fun, but the card is a game object with generated stats rather than your own photo as the keepsake. If you want the real cat you met to be the card, Cat Collector is the closer match. There is a fuller breakdown in our guide on CatchCat on iPhone.

Which cat journal app should you pick?

There is no single winner, because the four apps are answering different questions.

• If you want a private diary to look back on, start with Litterboxd.
• For a collection friends can collect too, on iPhone, start with Cat Collector.
• For a map and field notes on community cats, on either platform, start with Whisker Tracker.
• And for a social feed of encounters, try catch.

Plenty of people happily keep two, like Litterboxd as the diary and Cat Collector as the shareable set. The best cat journal app is the one whose payoff matches why you stopped to photograph that cat in the first place.

For more, see our roundup of the best cat spotting apps, our guide to keeping track of every neighborhood cat you meet, and how to photograph street cats without scaring them off.

Sources and further reading

• litterboxd.org
• apps.apple.com/us/app/litterboxd-your-cat-journal/id6757833859
• whiskertrackerapp.com
• apps.apple.com/us/app/whisker-tracker-cat-finder/id6651852332
• apps.apple.com/us/app/catch-cat-tracker/id6760037273
• catchcat.lol
• apps.apple.com/app/id6783591388

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