For GLP-1 and peptide shots

Your GLP-1s and peptides, tracked properly.

Log every pen and every vial, rotate injection sites, snap a meal for its protein, and see your estimated level between doses. Sign in with Apple and your history follows you to any iPhone. No ads, never sold.

Coming soon to theApp StoreSee pricing
  • Free forever core
  • Sign in with Apple
  • Synced and backed up
  • Light and dark
Logging a shot with dose, time and injection siteLinea Today screen with next shot countdown and estimated levelLinea tools, including reconstitution and syringe unit calculators

Three promises

Built the way a tracker should be.

1

The price, up front

The tracker is free forever. Pro is $49.99 a year after a 7-day trial, and you see that before you start. No surprise paywall halfway through setup.

2

Never lose your data

Sign in with Apple and every log syncs to your private Linea account. New phone, reinstall, dropped in the sink: sign in and your history comes back.

3

Log any dose your way

Weekly pens, daily injections, peptides by vial, nasal spray or cream, or a stack of several. Backdate a dose you forgot and edit anything later.

Features

Everything between one shot and the next.

Linea tracks what you and your provider decide. It never suggests a medication or a dose.

Shot log and site rotation

Dose, time and injection site in a few taps. Linea shows when each site was last used, so rotating is easy.

Log shot sheet with injection sites and when each was last used

Estimated level chart

A model of your medication level built from your logged doses and each drug's published half-life. An estimate, not a lab value.

Progress screen with weight trend and estimated medication level

Peptides and vials

Injection, nasal, topical or oral, each logged the right way. Track a vial from mixing to its last dose, with reconstitution math built in.

  • BPC-157
  • TB-500
  • GHK-Cu
  • Semax
  • Selank
  • CJC-1295 + Ipamorelin
  • MOTS-c
  • NAD+

Your account, synced

Sign in with Apple, no password. Every log and progress photo syncs to your private Linea account, encrypted at rest.

11 tools, all free

The math you would otherwise do on a napkin, built in.

  • Reconstitution calculator
  • Syringe units converter
  • Supply tracker
  • Cost per dose
  • Label dose schedules
  • Half-life explorer
  • Travel shot planner
  • Protein target
  • Water goal
  • BMI calculator
  • Unit converter

Insights and a doctor report

See patterns across doses, weight and side effects, then share a clean PDF with your prescriber, with the sections you choose.

AI meal scan

Snap your plate and Linea AI estimates protein, fiber and calories, item by item. The photo is analyzed, then discarded.

Linea AI

Ask about side effects, protein or your next appointment, with your logs if you choose. It never recommends a dose.

Progress photos

Front, side and back with a ghost overlay to line up each shot. Locked with Face ID by default, never in your camera roll.

Dose schedule calendar

Weekly, every few days, weekdays only, twice daily, or cycles of weeks on and off. See every planned dose at a glance.

Discreet reminders

Turn on discreet mode and reminders just say “Time for your dose”, with no medication name on your lock screen.

Daily affirmations

A kind line on your Today screen each morning. Save your favourites and share them as a card.

Pricing

Free to track. Pro when you want more.

Everything you need to log your shots is free forever. Pro adds depth for stacks and appointments.

Free

$0forever

No trial clock, no ads.

Includes

  • Shot log with injection site rotation
  • Estimated level chart
  • Shot reminders, discreet if you like
  • Dose schedule calendar
  • Weight tracking
  • Symptom log
  • Protein and water tracking
  • Progress photos
  • Daily affirmations
  • Synced to your account
  • All 11 tools
  • CSV export

Linea Pro 7 days free

$49.99/ year

After a 7-day free trial. Or $9.99 a month. Billed by Apple, cancel any time.

Everything in Free, plus

  • AI meal scan
  • Linea AI, your tracking assistant
  • Multiple medications and stacks
  • Insights across your logs
  • Progress photo compare
  • Doctor report PDF
  • Full-history charts

Prices in US dollars. Your local App Store price may differ. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period.

FAQ

Questions, answered.

Something else? Visit support, we reply within one business day.

What can I track with Linea?

Weekly GLP-1 pens like Mounjaro, Zepbound, Ozempic and Wegovy, daily injections, and peptides by injection, nasal spray, topical or oral. Linea logs what you enter. It never suggests a medication, a dose or where to get one.

Why do I need an account?

So your history is never stuck on one phone. You sign in with Apple (you can hide your email), and your logs sync to your private Linea account. Get a new iPhone, sign in, and everything comes back.

Who can see my health data?

Only you. Your logs are stored in Linea's account database, encrypted at rest and locked to your account. We never sell or share them, we don't show ads, and our team can't browse what you log.

How does the AI meal scan work?

Snap your plate and Linea AI estimates protein, fiber and calories for each item. The photo is sent through our server to a third-party AI provider for analysis and then discarded. Neither of us keeps it. It's part of Linea Pro, and you agree before you use it the first time.

What is Linea AI?

A chat assistant for questions about side effects, protein, and getting ready for appointments. If you turn it on, it can read your recent logs to answer. It never recommends or changes a dose, and your conversations stay on your iPhone.

What is the estimated level chart?

A model of how much medication may be in your body over time, built from the doses you log and each medication's published half-life. It is an estimate to help you see your rhythm, not a lab value.

How much does Linea cost?

The core tracker is free forever. Linea Pro is $49.99 a year after a 7-day free trial, or $9.99 a month. Apple bills it, and you can cancel any time in your Apple ID settings.

Does Linea replace my prescriber?

No. Linea is a tracking tool. Follow the plan from your prescriber, and bring your Linea doctor report to appointments if it helps the conversation.

Can I get my data out, or delete it?

Yes. Export everything to CSV for free at any time. Settings › Delete account removes your account and every log, photo and setting from our servers and your iPhone.

Every shot, accounted for.

Linea is almost here. Free to start, private from day one.

Coming soon to theApp Store
Linea welcome screen