Cat Weight - Health Tracker

MAKINO SHII

About this app

A cat's weight is the most accessible health signal you can track at home.
But cats don't sit on scales, and logs don't get kept. So this app is built to make it stick: weight only, three seconds per entry, and a quiet eye on both the gains and the losses.

Please note: the app interface is currently in Japanese only. An English interface is planned for a future update.


[ Weigh while holding your cat ]

Pick your cat up and step on the scale. Enter the total, and the app subtracts your registered weight to get your cat's. Readings from pet scales, baby scales, and your vet all go into the same graph.


[ Three seconds per entry ]

The last value is pre-filled, so a few taps on +10 g / -10 g is all it takes; hold to move faster. The record button sits at the bottom centre of every screen, and a home-screen widget shows the latest weight and the change since last time.


[ Loss matters more than gain ]

Unlike people, weight loss is the more worrying sign in cats. This app never congratulates a drop. It watches both directions with the same care.

Working from a trend line that smooths out day-to-day noise, it gently flags changes such as:

- a loss of 3% or more over 4 weeks
- a loss of 5% or more over 8 weeks
- a drop of 10% or more from the six-month high
- a weight-loss pace faster than 2% per week
- a gain of more than 2% in 30 days

The thresholds and their sources (WSAVA, AAHA and others) are published in full on the "Basis and sources" page inside the app.

Alerts are not a diagnosis. If something concerns you, please consult your veterinarian.


[ Body condition score ]

A number alone cannot tell you whether your cat is heavy or light. Answer three questions - how the ribs feel, the waist seen from above, the belly line from the side - and the app suggests a score on the 9-point scale, estimates an ideal weight, and lets you set it as a target in one tap.


[ Any number of cats. No purchases. ]

There is no limit on how many cats you can register. No paid plan, no cat limit, no locked features.


[ No ads. Your data stays yours. ]

- No advertising of any kind
- No account required - we never ask for your email or your name
- No behavioural analytics
- Records are stored on your device
- Cloud backup is off by default, and only turned on if you want it
- Export to CSV at any time, readable in any spreadsheet
- Cloud data can be deleted completely from the settings screen


[ Main features ]

- Weight logging (direct or while holding, +/-10 g stepper, notes)
- Line chart with trend line, target weight, healthy range band and kitten growth band (1 month / 3 months / 1 year / all time)
- Calendar view and a forgiving logging streak
- Body condition check (9-point BCS) and ideal weight estimate
- Cat profiles (photo, birthday, sex, neuter status, target weight, kitten growth mode)
- Memories (archive) - put a cat's records away gently without deleting them
- Logging reminders (weekly or daily, by day and time)
- CSV export, optional cloud backup, home-screen widget


[ Permissions ]

- Camera / Photos: used only when you set a profile photo. Photos never leave your device.
- Notifications: local notifications for logging reminders. Every feature works with this turned off.
- Internet: used only when you enable cloud backup, which is off by default.


[ Disclaimer ]

The alerts and estimates shown by this app are informational, based on general veterinary guidelines. They are not a diagnosis or a treatment recommendation. Always consult your veterinarian for diagnosis and treatment. This app is not a substitute for veterinary examination.


[ Contact ]
[e-mail]

Privacy policy: https://tmpacc100.github.io/catweight-support/privacy.html
Data deletion: https://tmpacc100.github.io/catweight-support/delete.html

Small records add up to big health. Start today, together.

What’s new

Cat Weight is now available in English.

- The app follows your device language, in Japanese or English
- You can also choose a language in Settings > Display > Language
- Fixed a layout issue on the body condition row of the cat card
- Fixed the weight wheel so screen readers announce the value correctly