Paper, spreadsheet or app: which GLP-1 log fits you?

What is the real difference between paper, a spreadsheet and an app?

The difference is who does the work. On paper, you do everything: writing, adding up and remembering. A spreadsheet does the math once you set it up. An app does the setup, the math and the reminding for you, and asks for your data and your attention in return.

All three can hold the same facts. A useful GLP-1 log records the date and time of each dose, the medication as the label names it, the injection site if you use one, and the things you want to talk about at appointments: side effects, weight, meals and questions. Our GLP-1 medication tracker guide walks through those fields one by one. This guide is about where to keep them.

How do paper, spreadsheets and apps compare side by side?

Here is the short version. Paper wins on setup and privacy, spreadsheets win on flexibility, and apps win on reminders, charts and reports. “Effort” here means the time it takes you each week, not money.

One honest caveat about apps: they differ a lot. Some focus on doses, some on food, and they handle data in different ways. Our side-by-side of the best GLP-1 tracker apps for iPhone compares several of them feature by feature, with sources.

Who does a paper log suit best?

Paper suits people who want a simple, private record and don’t need totals. If you mainly want to note each dose and site and jot down how you felt, a printed sheet does the job with nothing to install.

• You like writing by hand. A sheet on the fridge is hard to ignore.
• A caregiver helps. Anyone in the house can read and add to it.
• You want a fresh start. A blank week can feel lighter than an app full of history.
• Your appointments like paper. A clinician can scan a printed sheet in seconds.

Site rotation is a good fit for paper, too. MedlinePlus says to use a different site for each semaglutide injection, and with a weekly dose last week’s spot is easy to forget. A body map on the sheet makes the last site visible at a glance.

The trade-off: paper can’t remind you, add up protein or draw a weight trend, and sheets get lost. If you want to try it, our free printable GLP-1 log sheets include a shot and site log with a body map, and a weekly side effect and meal log.

Who does a spreadsheet suit best?

A spreadsheet suits people who like control and already live in Excel, Numbers or Google Sheets. You choose every column, you can chart anything, and the file is yours to move.

• You track something unusual. A column for a supplement, a sleep score or a custom symptom scale takes seconds to add.
• You like your own charts. Weight over time, weekly protein averages, days with a side effect: all a formula away.
• You log at a computer. Spreadsheets are comfortable on a big screen and fiddly on a small one.

The trade-off: no reminders, no body map, and setup is on you. Spreadsheets also make it tempting to add formulas that predict things. Keep yours a record. Leave out formulas that try to work out how much medicine is in your body or suggest the next dose. Those questions belong to your prescriber, not a cell.

Who does a tracker app suit best?

An app suits people who want reminders and want the adding-up done for them, especially once a log runs for months. It’s also the easiest way to keep doses, meals, water and symptoms on one timeline.

• You forget when your next dose is. A reminder beats a sticky note.
• You care about protein and fiber. Totals by meal and by day are hard to keep on paper.
• You want a report before visits. A summary for the dates you choose saves an evening of copying.
• Your phone already knows things. On iPhone, some apps can bring in steps, weight or water from Apple Health.

The trade-off is privacy and fit. An app keeps your data in its own systems, so check where it’s stored, what it shares and what it asks to access. The FTC suggests reviewing an app’s permissions in your phone’s privacy settings and turning off the ones it doesn’t need. If an app connects to Apple Health, Apple requires it to have a privacy policy that explains how it uses that health data. Our guide on how GLP-1 tracking apps work has more questions worth asking first.

What columns should a GLP-1 spreadsheet have?

Start with one row per day and nine columns. That covers doses, sites, weight, food, water and symptoms without turning the sheet into a chore. Copy the header row below into a new spreadsheet, then delete any column you won’t use.

The rows above are made up, and the medication name is a placeholder. A few habits keep the sheet useful:

• Copy the label. Write the medication and strength exactly as your pharmacy label shows them.
• Use one word per symptom. “Nausea” every time, not “queasy” one day and “sick” the next, so you can filter later.
• Use the same scale. Mild, moderate or severe works well for side effects.
• Leave quiet days in. A row with “none” shows what normal looks like for you.
• Freeze the header row so the column names stay put as the sheet grows.
• Add a “Questions” tab for things to bring up at your next appointment.

Protein and fiber can be rough guesses. The “~” is there on purpose: a steady estimate tells you more over a month than a perfect number you gave up on in week two.

Can you mix paper, a spreadsheet and an app?

Yes, and plenty of people do. A common setup is paper for doses and sites, kept next to the medication, and an app or spreadsheet for meals and weight. Just pick one home for each kind of entry so nothing gets logged twice or not at all.

If you switch later, you don’t need to move your whole history. Keep the old sheets or file, note the date you switched, and bring both to your next visit. Before you change methods, write down your last dose date, your last site and anything your care team asked you to track, so the new log starts in the right place.

How does PenPal handle the same log?

PenPal is the app option, built for GLP-1 logs. It covers the same columns as the template above, and fills some of them in for you. It doesn’t decide doses or give medical advice.

• Doses and reminders: log the medication, amount, time and site, and set a reminder for the next one.
• Site rotation: tap the site on a body map. PenPal remembers where each dose went and suggests the next site.
• Meals: snap a photo or describe a meal. PenPal estimates calories, protein, fiber and macros, and you can edit anything it gets wrong.
• Side effects: a quick check-in rated mild, moderate or severe.
• Charts and report: weekly insights show your weight trend, protein, fiber and water, and a PDF report covers the dates and data you choose.
• Apple Health: optional. It can bring in steps, workouts, active energy, weight and water.

See how the GLP-1 shot tracker works, or keep the printable sheets as a backup. They’re a fine pair.