For Ozempic/Wegovy/Mounjaro/Zepbound/compounded meds/retatrutide/peptides

The GLP-1 tracker that spots what you'd miss.

Log your shots, weigh-ins, meals and how you're feeling. Tirzing keeps an eye out for patterns, like hungrier days after short sleep or water weight before your period, and tells you when it spots one. Free, no time limit.

A week of tracking

One week on a GLP-1, and what Tirzing does with each day of it

Day1

Shot day Free

Two taps, and the week begins.

Log the dose your prescriber set, the site and the time. Tirzing remembers where you injected last and keeps your rotation, and counts down whatever it came from: a single-dose pen, a KwikPen or a vial.

  • Every medication you take, each on the schedule you enter
  • A reminder on shot day, on your phone or watch
  • Your old logs imported, including a Shotsy export
Quick actions card from the app: the recommended next injection site, a weight box, and buttons to log a shot, open the daily log or add a vial.
Day2

How you feel Paid plans

Your days, side by side.

Log how you feel in a few taps, and Tirzing lays your own entries out by day of your shot cycle. If something repeats for you, you will see it there.

  • Nausea, energy, appetite, mood and more
  • Seen next to your shots, in your own data
Day4

Meals Free

Food and water, without the homework.

Search a food, pick a favorite or add your own recipe. Calories, protein, fiber and water add up against targets you choose.

  • Restaurant chains in the same search
  • Scan a barcode off the packPaid plans
  • Describe a meal, or snap your plate, a recipe or a labelPaid plans
  • Custom meals, repeats, supplements and vitaminsPaid plans
1,684 of 2,050 cal EATEN TODAY Snap a photo Macros filled in for you PROTEIN 126 / 150 g CARBS 148 / 190 g FAT 52 / 68 g Protein is a floor to hit, never a ceiling to stay under ENERGY BALANCE 1,684 in 2,410 out -726 CAL WATER 6 of 8 glasses Next: bench 5×5, up 5 lb

Example screen, made-up numbers

Day6

Your estimate Paid plans

An estimate, drawn from your own shots.

Tirzing estimates the medication in your system from the shots you logged and a half-life you can edit, and lets you line it up with how you felt. It is a picture of your own logs, not medical information.

  • Every medication you add, on one chart
  • Not a lab result, and never a reason to change a dose
ESTIMATED MEDICATION LEVEL Tirzepatide 4.2 mg Half-life 120 h, editable 0 2 4 6 2.5 → 5 mg Day 7 trough, 2.4 mg now YOUR LOGGED SHOTS 2.5 wk 1 2.5 wk 2 2.5 wk 3 2.5 wk 4 5 wk 5 5 wk 6 5 wk 7 5 wk 8 Bateman one-compartment estimate. For your own records, not medical advice.

Example screen, made-up numbers

Day7

Weigh-in Paid plans

A stall, or just a Tuesday?

Weigh in whenever you like. Tirzing reads your trend rather than one morning, shows when your loss has slowed against your own pace, and projects a goal date with a range either side.

  • Day-to-day swings smoothed out of the trend
  • Weekly and monthly reports on your own patterns
Weight and shots chart from the app: weight falling over three months, each shot marked as a dot, with a smoothed trend line.

On track. 2.3% over 4 weeks.

Day28

Reorder day Paid plans

Know when you will run out.

Your pens or vials count down as you log. Tirzing walks the schedule you entered forward to the day your supply runs out, and gives you a date to reorder by.

  • Sharing a vial with someone? Their doses count too
  • Cost per pound, from what each vial actually cost
YOUR SUPPLY RUNS OUT Sat 12 Sep 10 weeks · 14 shots left A flat-dose calculator says Wed 14 Oct 32 days out DOSE 5 mg 7.5 mg 10 mg Stock Empty EMPTY Reorder by Today +4 wks +8 wks +12 wks +16 wks Your schedule, overfill counted Flat-dose guess

Example screen, made-up numbers

Everyday

Companion Free

Someone small who is glad you showed up.

Adopt a firefly, axolotl or otter that grows when you log your day, weigh in or take a shot on time. Miss a week and they are right where you left them. Never rewarded for eating less, and never for sale.

Meet the companions
zzz

Works with

Ozempic Wegovy Mounjaro Zepbound Saxenda & Victoza Compounded semaglutide Compounded tirzepatide Retatrutide Other peptides Lipo+ & MIC NAD+ B12 Glutathione and anything else you inject, in the units and on the schedule you enter.

Tirzing is a tracking app. It does not give medical advice, and it does not prescribe, sell, recommend or endorse any medication. Tracking guides

See it first

Take the three-minute tour

What it costs

What's free, and what isn't

Tracking is free for as long as you want it, with no card. Paid plans add the analysis.

Free

  • Shots and dosesDose, site and time in a couple of taps, with site rotation and a reminder for every medication.
  • Weight, side effects, check-insHunger, mood, energy and side effects, charted against your shots.
  • Pens, vials and supplySingle-dose pens, KwikPens, vials with overfill, and compounded blends.
  • Blood pressure and blood sugarSeveral readings a day, fasting or after meals, plus A1c results.
  • Apple Health and Health ConnectWeight, steps, workouts and sleep from your phone or watch.
  • Food and waterSearch a food or pick a favorite, against your calorie, protein and water targets.
  • Menstrual cycleYour period and symptoms on the daily log, a predicted next period, and how your weight moves around it.
  • RemindersWater, protein, meals, weigh-ins and workouts, skipped once you have already logged it.
  • Accounta-BuddiesSmall private groups with weekly check-ins and challenges scored on showing up.
  • Sleep and recoverySleep logged or synced, and how it lines up with hunger and the scale.
  • Maintenance modeA target band to hold, and an early warning if the weight starts to come back.
  • CompanionA small creature that grows when you log. Never rewarded for eating less.
  • Progress photosPrivate photos with measurements, and a before/after that blurs faces.

Paid plans add

  • Barcode scanningScan a packaged food to pull its nutrition facts off the pack.
  • Supply runway and medication levelsThe day your supply runs out with your dose plan counted, and an estimate of the medication in you.
  • Stall detectionTells a real plateau from a noisy week by reading your trend.
  • Weekly and monthly reportsPatterns in your own data, like short sleep before hungry days or salt before a scale jump.
  • Goal dateThe date your weigh-ins point to, with a range either side.
  • AI food loggingDescribe a meal, or photograph your plate, a recipe or a nutrition label.
  • Exercise and strengthGuided workouts and programs that progress your lifts, with muscle checks.
  • Cost per poundVials, visits and labs, divided by the results you are getting.
  • Report for your prescriberA printable summary of doses, weight and side effects.

Create a free account See every feature Compare plans and prices

01

Arrive with your history

Paste or upload your old shot, weight and side-effect logs, including a Shotsy export. Tirzing works out the format, and you check every row before anything is saved.

02

Let your phone fill it in

Weight, steps, workouts and sleep from Apple Health or Health Connect. Get the Android app, or add it to your home screen from any browser.

03

Leave whenever you like

No ads, and your data is never sold. Export everything in one click, and deleting your account deletes your data and photos with it.

A note from the founder

I built Tirzing because I'm on tirzepatide too.

I kept tracking everything in Excel, then asking the same questions every week: Am I in a stall? Why did I lose more or less? Why am I hungrier? What's actually working?

So I built Tirzing to do that digging automatically and help uncover the hidden patterns behind your progress.

From members on Reddit

Been loving Tirzing so far! I downloaded the Android app, and it functions well with what I want to do with it. I definitely enjoy the water and protein reminders because I'm terrible at keeping up with water throughout the day.

I also like how the daily log is structured to collect as much data as possible in one spot rather than having to go to different tabs. I can track weight, side effects, mood/energy, and menstrual stuff all at once, and it's all within one app rather than having to open four different ones like I had been previously.

u/fledgling_angel

This app has allowed me to drop four other subscriptions because all the features I was paying for in other apps are consolidated into one. And it's a whole lot cheaper than a single one of my others. And the more I tinker into it, I'm finding more features that I didn't know about.

u/Anti_colonialist

Love Tirzing! Really enjoy all the insights.

u/danigiggles24

Made with the people who use it

Most of what is in Tirzing started as a member saying "this would be useful" or "this part is annoying", in support chat or on Reddit. It is a tracking app: not a pharmacy, a telehealth company or a medical provider, and it never tells you what dose to take.

Questions

Questions we hear a lot

More in the help center.

Which medications does Tirzing work with?

Any injectable GLP-1: Ozempic, Wegovy, Mounjaro and Zepbound, compounded semaglutide or tirzepatide from a vial, and investigational ones such as retatrutide. You can add any other medication or peptide with its own unit, schedule and half-life, including B12, MIC or NAD+. Tirzing tracks what you take. It does not sell, recommend or endorse any medication.

Is it really free?

Yes. The free plan has no time limit and needs no card. It includes shots and doses, weight, side effects, check-ins, pens, vials and supply, blood pressure and blood sugar, apple health and health connect, food and water, menstrual cycle, reminders and accounta-buddies. Paid plans add the deeper insights, such as barcode scanning, supply runway and medication levels, stall detection and weekly and monthly reports.

Is there an app?

Tirzing works in any browser and installs to your home screen like an app. There is an Android app with Health Connect sync, and on iPhone you can bring in your Apple Health data today while the iOS app is on its way.

Can I bring my history from Shotsy or another tracker?

Yes. Paste or upload your old shot, weight and side-effect logs, including a Shotsy export, and Tirzing works out the format. You see every row before anything is saved.

Who can see my data?

You. There are no ads and your data is never sold. You can export everything in one click at any time, and deleting your account deletes your data, photos included. Cycle data is never shared with buddies or put on share images.

How does it estimate the medication in my system?

From the shots you actually logged and each medication's half-life, which you can edit. It is an estimate for your own records, not a lab result and not medical advice.

Does Tirzing tell me what dose to take?

No. It tracks what you and your prescriber decide and shows you the effects over time. Always follow your prescriber and the product label.

Can I cancel a paid plan?

Any time, from your account. You keep all your data and drop back to the free plan.

Free, with no time limit

Start with one weigh-in.

Set up takes a few minutes: your medication, the schedule you were given and your first pen or vial. The patterns start showing up from there.