How to Track Your Pet's Health: Spreadsheet vs App vs Paper

You're at the vet clinic, and the vet asks when your cat last had their rabies vaccination. Or what your dog weighed six months ago. Or which of your three cats had that urinary issue last summer.

If you're fumbling for answers, you're not alone. Most pet parents don't have a system for tracking health information — so when they need it, it isn't there.

The good news: you have options. Paper, apps, and spreadsheets all work. The question is which one works best for your life and your pets.

Paper tracking: simple, but limited

Pros: Paper requires zero tech skills. You don't need a phone, laptop, internet connection, or account login. It's tactile—some pet parents genuinely prefer writing. You can print it, bring it to the vet, take notes during appointments, and leave it with a pet sitter. No risk of losing your data to a company going out of business.

Cons: Here's where the limits become clear. You can't search a notebook. If you need your cat's weight from March 2024, you're flipping through pages. You can't calculate your dog's next vaccination due date—the vet gives you a date, you write it down, you miss it. Paper is easy to lose, tear, or leave at home exactly when you need it. If you have multiple pets, a single notebook gets chaotic. You can't send it to another family member or a pet sitter electronically. And writing is slow—taking notes during an appointment takes longer than clicking and typing.

Paper works if you have one pet, you see the same vet every time, and you're comfortable managing everything in your head. Beyond that, limitations add up quickly.

App tracking: convenient, but risky

Pros: Pet health apps are designed to be easy. They often include reminders for vaccinations, medications, and appointments. Some are free or have generous free tiers. They're on your phone, so they're always with you. Many have nice interfaces and make the experience feel polished.

Cons: This is where things get complicated. Apps rely on the company staying in business. Many pet health apps have shut down over the years, leaving pet parents with no way to access their data. Even if the app survives, the company might decide to raise prices or change the feature set—once your data is in their system, you're locked in. Export options are often limited or non-existent. If you switch phones or operating systems, transferring your data can be painful. Apps often don't handle multi-pet households well—you might need separate accounts or hit limits on the number of pets you can track. Subscription fatigue is real: a $2.99/month app doesn't sound like much until you're paying for three different pet trackers. And customization is limited—the app tracks what the company decided you need to track, nothing more.

The deeper problem: apps are designed to lock you in. Your data lives on their servers. If you want to leave, good luck getting your information out in a usable format.

Spreadsheet tracking: the practical sweet spot

Pros: Spreadsheets are fully customizable. Need to track something the app companies never thought of? Add a column. Works in Excel, Google Sheets, LibreOffice, Numbers—basically any platform you're already using. No subscriptions, no lock-in, no company to shut down. You own the file completely. Works offline. You can share it with family members, vets, or pet sitters instantly as an email attachment or shared link. Spreadsheets handle multi-pet households beautifully—one file tracks all your cats, dogs, or other pets. Formulas auto-calculate your next vaccination due date, medication refill date, or age in years. Print whenever you need a paper copy. Import old records from other pets or other spreadsheets. The learning curve is minimal—if you've ever used a spreadsheet, you can do this.

Cons: You need to set it up yourself. That takes maybe 30 minutes if you're starting from scratch. Not as visually polished as an app—there's no cute pet avatars or animations. You have to remember to update it (though the same is true of any tracking system). If you're not comfortable with spreadsheets at all, there's a tiny learning curve—but it's not steep.

Honestly? The "cons" are minimal. The setup time is a one-time cost. Visual polish doesn't help you remember your pet's medication history. And if you're comparing a spreadsheet to paper or an unreliable app, a spreadsheet is clearly superior.

Why spreadsheets win for most people

The key difference: you own your data. You're not renting access to a system that could disappear tomorrow. Your information is portable—you can share it, print it, export it, or move it anywhere you want. It works for one pet or five. It's free after the initial setup.

For multi-pet households especially, a spreadsheet is hard to beat. You get one file with separate tabs for each pet, shared information like vet clinic contact details, a vaccination schedule view, and a medication log. Formulas remind you when vaccines are due. You can print it before a vet visit in 60 seconds.

An app might feel more convenient in the moment, but that convenience comes with invisible costs: lock-in, subscription fees, limited customization, and the risk that the service shuts down. A spreadsheet trades a tiny bit of polish for complete control and portability.

How to actually stick with it

The honest truth: the best tracking system is the one you'll use consistently. Paper, app, or spreadsheet—it only works if you update it.

Set a recurring reminder for the first of every month to log your pet's weight. Update the spreadsheet or app the same day as a vet visit, while details are fresh. Print a copy before every appointment. If you do these three things, you'll have records that are genuinely useful.

The friction should be minimal. If you're dreading opening your tracking system, it's the wrong system for you. A spreadsheet should feel easy—open it, type a date, done. An app should send timely reminders. Paper should be in a place you actually see it.

The combination approach

The best approach isn't either-or. Use a spreadsheet as your primary record—it's the most reliable and flexible. Print a copy before vet visits. Keep a small notebook in the car for appointment details you want to jot down. This combination gives you searchable digital records, portability, and the tactile backup of paper when you need it.

You're not locked into anything. You own everything. And your pet's health information is safe.