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How GLP-1 and peptide tracker apps compare

Checked on October 22, 2026. Shotsy and MeAgain are both well loved, at 4.8 stars from tens of thousands of ratings. Shotsy is strong on charts and reports, MeAgain on food logging and its chat companion. PeptideUp is new: built around no account, site rotation and vials, and not in the App Store yet.

Every fact about another app comes from its own App Store page, website or privacy policy on that date, linked below. "Not stated" means we could not find it there. Not medical advice; follow your prescriber and your medicine's leaflet.

Side by side

 PeptideUpShotsyMeAgain
Account neededNo. Open the app and start.No on iPhone. Android needs Google sign-in. [3]Not stated on the App Store. Its privacy policy describes accounts with login details, including Google sign-in. [6]
Price (US)Free: logging and reminders for one medicine, one Vault item with its freshness alert, site rotation and the share card. Pro: $59.99 a year with a 3-day free trial, or $12.99 a month.Free to download, "most features free". Subscriptions listed at $9.99 or $14.99 a month and $39.99 to $59.99 a year. [1] [2]Free to download; some features need MeAgain Premium. In-app purchases listed from $14.99 to $119.99, period not stated. [4] [5]
Injection site rotationSite Rotation Compass: four belly zones, thighs and arms, with the next spot ready. Free.Yes. A visual map that suggests the next site. [2]Tracks injection sites so you can rotate them. [5]
VialsPens, vials and tablets. The Cold Vault keeps each mixed vial on its freshness clock.Supports compounded medicines. Vial tracking not stated. [2]Supports compounded medicines. Vial tracking not stated. [5]
AIAsk Pengu (Pro) answers from your own logs and never suggests a dose. Meal photo estimates (Pro).Not stated.An AI chatbot, per its privacy policy, and Capy, a companion you can ask anything, with unlimited chat in Premium. Food logging by photo or voice. [5] [6]
Where your data livesOn your iPhone and in your private iCloud. No analytics on health data.iPhone: on your device and in your private iCloud, plus optional anonymous trend data in the US. Android: Google Firebase. [3]Collected by MeAgain. Its App Store privacy label lists health and contact data as linked to you, and identifiers and usage data as used to track you. [4]
PlatformsiPhone, coming soon.iPhone and Android. [2]iPhone and Android. [5]
App Store ratingNot in the App Store yet.4.8 from about 34,000 ratings. [1]4.8 from about 39,000 ratings. [4]
 Checked October 22, 2026. Apps change often; check each App Store page before you choose.

What each one does well

Shotsy

  • Estimated medication level charts for semaglutide, tirzepatide, liraglutide and dulaglutide.
  • PDF reports to share with your care team.
  • Shots and pills, with weight, calories, protein and water from Apple Health.
  • No account on iPhone, with your data in your private iCloud.
  • 17 languages, and an Android app.

MeAgain

  • Food logging by photo, voice, barcode or search, with protein, fiber and water goals.
  • Food guidance built by a registered dietitian.
  • Capy, a chat companion with its own widget.
  • Progress photos, Journey Cards, a side-effect journal and community features.
  • An Android app.

PeptideUp

  • No account, ever. Your logs stay on your iPhone and in your private iCloud.
  • The Site Rotation Compass, free.
  • Pens, vials and tablets in one Cold Vault, each on its freshness clock.
  • A one-page summary for your prescriber.
  • Still to come: the App Store release, ratings, and Android.

What they agree on

All three say they are for tracking, not medical advice. Whichever you choose, your prescriber decides your medicine and your dose.

Try PeptideUp's demoHow to choose a tracker

Sources

  1. Shotsy GLP-1 Tracker on the App Store (US), version 3.4.0: description, in-app purchases, ratings, privacy label. Checked October 22, 2026. apps.apple.com
  2. Shotsy website: features, supported medicines, FAQ. Checked October 22, 2026. shotsyapp.com
  3. Shotsy privacy policy, last updated March 6, 2026. shotsyapp.com/privacy
  4. MeAgain: GLP-1 Tracker App on the App Store (US), version 2.3.0: description, in-app purchases, ratings, privacy label. Checked October 22, 2026. apps.apple.com
  5. MeAgain website: features and FAQ. Checked October 22, 2026. meagain.com
  6. MeAgain privacy policy, effective June 19, 2026. meagain.com/privacy

Something out of date? Write to support@peptideup.app and we will fix it. PeptideUp is a tracker, not medical advice.