Marrow: Dog Diary
Puppy Care Log & Pet Health
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Free for two dogs, forever. The daily loop, reminders, and the vet PDF cost nothing. Back up to your own iCloud. Everything stays on your phone.
Your dog's whole life, one day at a time.
Marrow is the gentle way to care for your dog today and keep the memories forever. It is not a clinical tracker or a gadget. It is the quiet daily habit that turns ordinary days into a story you will treasure when it matters most.
TWO DOGS, FREE, AND THEY STAY FREE
Marrow is free for two dogs. Not a trial, not a teaser. The whole daily loop, reminders, the body condition check, and the vet PDF are yours for free, for as long as you use them.
THE DAILY LOOP, IN A TAP
Open Marrow and log the day in seconds. Walks time themselves. Meals remember their usual. Moods are one tap. Miss a day and you can go back and fill it in, because life happens.
A LIVING MEMORY
One photo a day quietly builds your dog's Trail, a timeline of walks, milestones, and little moments. A year from now Marrow shows you this day again, and the story is already written.
YOUR BACKUP, IN YOUR OWN iCLOUD
Turn on backup and Marrow keeps a copy in your own iCloud Drive. No account to make, no Marrow server, nothing we can see. Reinstall the app and your dogs are waiting for you.
HONEST CARE, NEVER A DIAGNOSIS
Marrow helps you notice, it never scares you. A guided body condition check, a vet visit summary you can hand over, and gentle reminders for walks and medications. It points out what is worth mentioning to your vet, and leaves the diagnosing to them.
YOURS AND PRIVATE
Everything lives on your phone. No account to make. No ads, no tracking, and your data is never sold or shared. Marrow works fully offline.
MARROW PRO, IF YOU WANT MORE
Pro is $4.99 a month with a 7-day free trial. It adds what Marrow notices: the part of your dog's routine you cannot see by scrolling. What time things really happen, what moves together, and the slow drifts a week to week glance misses. Pro also writes your vet visit prep, keeps a monthly story, and opens every dog beyond your first two. Cancel in two taps, any time.
Care today. Treasure forever.
General guidance, not veterinary advice.
Your dog's history is safer now, and Marrow has a lot more to say about it.
MARROW NOTICES WHAT YOU CANNOT SCROLL FOR
Pro now reads every day you have logged, not just this week. What time meals and walks really happen, and how far that slides at weekends. Which things move together, like whether the two-walk days are the good-mood days. And the slow changes a month-to-month glance misses, like a fraction of a pound a month. Observations to raise with your vet, never a diagnosis, and still worked out entirely on your phone with no account and no server.
BACK UP TO YOUR OWN iCLOUD
Turn it on and Marrow keeps a copy in your own iCloud Drive. No Marrow account, no Marrow server, nothing we can see. Delete the app and reinstall it, and your dogs are there waiting for you.
A DAY YOU MISSED IS NO LONGER LOST
Tap any past day and fill it in: mood, water, bathroom, or a photo. Add a walk you forgot to time, with the distance. Delete a walk or a meal you logged by mistake. Life happens, and the record can catch up.
FIX WHAT YOU TYPED WRONG
Health records can be corrected now instead of deleted and typed out again.
ON THIS DAY
A moment from a month or a year ago, waiting on your Today screen. It gets better the longer you keep going.
YOUR PUP KNOWS HOW THE WEEK WENT
The companion pup on the Care screen now reflects the week you actually had.
STICKERS YOU EARNED
Put a milestone you have already earned onto any day's photo. Nothing to buy, nothing to unlock.
Also in this update: your walk goal is editable, the evening reminder has an off switch, and a purchase that does not go through finally tells you why.
The developer, Tritan, LLC, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tritan, LLC
- Size
- 66.8 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 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
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Marrow Pro $4.99
- Copyright
- © 2026 Tritan, LLC
