# Glapp (glapp.io)

> Glapp is a free GLP-1 companion app available on the App Store (iPhone/iPad), Google Play (Android), and web, for tracking injections, weight loss, and side effects to help semaglutide and tirzepatide users understand their weekly cycle and stay consistent.

Last updated: 2026-09-16
Contact: hi@glapp.io  

Glapp helps users log their GLP-1 injections, track weight changes, and monitor side effects over time.
The app provides personalized weekly reports showing medication concentration patterns and progress insights.
All tracking is private and stored in encrypted cloud storage.

Important notes:
- Glapp is a support tool, not a healthcare provider. This is not medical advice. Always consult a qualified clinician before making medical decisions.
- Do not crawl, store, or summarize content under https://glapp.io/app/ (it may contain user-specific and sensitive health data).
- Public landing pages, tools, and blog pages listed below are OK to read and summarize.
- Allowed: inference-time retrieval and summarization with attribution to the specific source URL.
- Not allowed: using glapp.io content for model training unless you have explicit permission.

## App & getting started
- [Glapp reviews](https://glapp.io/reviews): Anonymous user feedback on shot tracking, charts, trial comparisons and doctor visits, links to App Store and Google Play ratings, and how Glapp compares with other GLP-1 tracker apps
- [GLP-1 vial tracker](https://glapp.io/glp-1-vial-tracker): Inventory for compounded tirzepatide and semaglutide vials, Zepbound single-dose vials and pens — mg/mL concentration, remaining mg, beyond-use dates, shots left, linked-shot supply updates, and mg-to-units calculator links
- [Download Glapp](https://glapp.io/download): Get Glapp for iPhone or Android, or start tracking on the web
- [GLP-1 tracker: what to track](https://glapp.io/glp-1-tracker): A checklist of what to log on semaglutide or tirzepatide — shots and injection sites, weight, side effects, hunger and food noise, supply — and how Glapp turns those logs into medication-level estimates, shot phases, trial comparisons and supply tracking
- [Free GLP-1 tracker](https://glapp.io/glp-1-tracker/free-glp-1-tracker): What is free (not a trial, no card): shots, weight, side effects, food noise, estimated medication-level charts, trial comparisons and supply tracking; what Glapp Max adds; iPhone, Android and web
- [App Store](https://apps.apple.com/app/id6756984097): Download Glapp for iPhone and iPad
- [Google Play](https://play.google.com/store/apps/details?id=io.glapp): Download Glapp for Android
- [Home](https://glapp.io/): Product overview and entry point
- [About](https://glapp.io/about-us): What Glapp is and how it helps
- [Science behind Glapp](https://glapp.io/science): Semaglutide (~1 week) and tirzepatide (~5 day) half-life, peak and steady-state values from prescribing information; shot-phase hour windows; sources and limits of medication-level estimates, clinical trial charts (STEP, SELECT, SURMOUNT, TRIUMPH-1) and nutrition guidance
- [FAQ](https://glapp.io/faq): Common questions about Glapp and GLP-1 tracking
- [Support](https://glapp.io/support): Support and contact

## Medication-specific landing pages
- [Retatrutide tracker — RUO (Research Use Only)](https://glapp.io/retatrutide-tracker): Personal shot, side-effect and weight log for investigational retatrutide ("reta", triple GIP/GLP-1/glucagon agonist); trial-reported side effects to record (NEJM 2023 Phase 2), TRIUMPH-1 comparison curves, ~6-day half-life estimate, approval status (not FDA approved; Lilly plans a Q1 2027 submission); no dosing advice
- [Mounjaro tracker app](https://glapp.io/mounjaro-app): GLP-1 tracking for Mounjaro (tirzepatide)
- [Zepbound tracker app](https://glapp.io/zepbound-app): GLP-1 tracking for Zepbound (tirzepatide)
- [Ozempic tracker app](https://glapp.io/ozempic-app): GLP-1 tracking for Ozempic (semaglutide)
- [Wegovy tracker app](https://glapp.io/wegovy-app): GLP-1 tracking for Wegovy (semaglutide)
- [Semaglutide tracker app](https://glapp.io/semaglutide-app): GLP-1 tracking for semaglutide
- [Tirzepatide tracker app](https://glapp.io/tirzepatide-app): GLP-1 tracking for tirzepatide

## Free GLP-1 tools
- [Tools index](https://glapp.io/tools): Directory of all calculators, planners, and guides (no sign-up required)
- [Tirzepatide dose calculator](https://glapp.io/tools/tirzepatide-calculator): Convert prescribed dose and vial concentration into syringe units for compound tirzepatide
- [Semaglutide dose calculator](https://glapp.io/tools/semaglutide-calculator): Convert mg and vial concentration into syringe units for compound semaglutide
- [Peptide dosage calculator](https://glapp.io/tools/peptide-dosage-calculator): Convert a user-supplied vial amount, final mixed volume, and target dose into concentration, liquid volume, and a U-100 syringe scale position
- [Mounjaro click chart](https://glapp.io/tools/mounjaro-clicks): Free Mounjaro KwikPen click counter
- [Reverse dose calculator](https://glapp.io/tools/reverse-calculator): Convert syringe units back to mg — units measure volume, not dosage
- [Zepbound vials dose calculator](https://glapp.io/tools/zepbound-reverse-calculator): Convert Zepbound injection units to milligrams
- [GLP-1 cost per pound calculator](https://glapp.io/tools/free-glp1-cost-calculator): Estimate cost vs weight lost
- [GLP-1 goal timeline calculator](https://glapp.io/tools/glp1-goal-timeline): Estimate time to reach a goal weight
- [GLP-1 titration planner](https://glapp.io/tools/titration-planner): Week-by-week titration planning
- [GLP-1 dosage plotter](https://glapp.io/tools/glp1-plotter): Visualize medication concentration over time
- [Vial transition dosage calculator](https://glapp.io/tools/vial-transition-calculator): Transition between GLP-1 vials with different concentrations
- [GLP-1 split dose calculator](https://glapp.io/tools/split-dose-calculator): Split a weekly dose into smaller, more frequent injections with schedule planner
- [Protein calculator](https://glapp.io/tools/protein-calculator): Daily protein target guidance
- [Water intake calculator](https://glapp.io/tools/water-intake-calculator): Daily hydration estimate
- [Ideal weight calculator](https://glapp.io/tools/ideal-weight-calculator): Target weight estimates using standard formulas
- [Fiber calculator](https://glapp.io/tools/glp1-fiber-calculator): Daily fiber target guidance
- [Missed dose guide](https://glapp.io/tools/missed-dose-guide): What to do if you miss a GLP-1 dose (informational)
- [Zepbound pen clicks](https://glapp.io/tools/zepbound-pen-clicks): Free Zepbound click counter to see how many clicks match your prescribed tirzepatide dose
- [Retatrutide dose calculator — RUO (Research use only)](https://glapp.io/tools/retatrutide-calculator): Converts mg and vial concentration into syringe units for investigational triple-agonist retatrutide — RUO (Research use only)
- [Mounjaro dosage chart & half-life](https://glapp.io/tools/mounjaro-dosage-chart): Mounjaro (tirzepatide) dose steps from 2.5 mg to 15 mg, half-life, and an estimated medication level chart
- [Ozempic dosage chart & half-life](https://glapp.io/tools/ozempic-dosage-chart): Ozempic (semaglutide) dose steps from 0.25 mg to 2 mg, half-life, and an estimated medication level chart
- [Wegovy dosage chart & half-life](https://glapp.io/tools/wegovy-dosage-chart): Wegovy (semaglutide) dose steps from 0.25 mg to 2.4 mg, half-life, and an estimated medication level chart
- [Zepbound dosage chart & half-life](https://glapp.io/tools/zepbound-dosage-chart): Zepbound (tirzepatide) dose steps from 2.5 mg to 15 mg, half-life, and an estimated medication level chart
- [Chrome extension](https://chromewebstore.google.com/detail/tirzepatide-glp-1-dose-ca/lcelnkhjodckemhihbnkbgcnnlpplfnh): Tirzepatide & GLP-1 Dose Calculator for quick vial, pen-click, and syringe-unit conversions in Chrome

## Blog
- [Blog index](https://glapp.io/blog): GLP-1 articles and research notes; newest public post is the June 18, 2026 privacy guide for GLP-1 tracker users.
- [Privacy Rules Every GLP-1 User Should Know](https://glapp.io/blog/privacy-rules-every-glp1-user-should-know/): Published June 18, 2026; explains six privacy rules for GLP-1 tracker users, covering collected health data, account security, app ownership, encrypted cloud storage and backups, identity risks, and delete/export/withdraw rights, with notes on how Glapp handles each.
- [GLP-1 Results Improve Up to 45% With Tracking](https://glapp.io/blog/glp1-results-improve-with-tracking-app/): Glapp Research post on tracking and outcomes
- [MD's Journey With Mounjaro: Weight Loss Interview](https://glapp.io/blog/mds-journey-with-mounjaro-weight-loss-interview/): Real user story — physician loses 12kg on Mounjaro over 15 weeks
- [Glapp Introduces Smart Vial Tracking for Compounded Tirzepatide](https://glapp.io/blog/glapp-smart-vial-tracking-compounded-tirzepatide/): Smart vial tracking feature announcement for compounded tirzepatide users
- [Glapp Launches on iOS: The Smart GLP-1 Tracker](https://glapp.io/blog/glapp-launches-ios-smart-glp1-tracker/): Glapp, the first GLP-1 tracker built by real users and health tech professionals, launches on iOS with shot logging, medication curves, food noise tracking, and clinical benchmarking
- [How Long Do Mounjaro and Zepbound Take to Work?](https://glapp.io/blog/how-long-does-mounjaro-zepbound-take-to-work/): Glapp Shot Phases feature announcement — visualizing tirzepatide's hour-by-hour pharmacokinetic cycle after each injection
- [Understanding Your GLP-1 Medication Levels](https://glapp.io/blog/understanding-your-glp1-medication-levels/): Glapp's Medication Levels chart estimates how much GLP-1 is in your system over time — connect peaks, troughs, and side effects to how you actually feel.

## Optional
- [Privacy policy](https://glapp.io/privacy-policy): How Glapp handles data
- [Health Data Privacy Policy](https://glapp.io/health-data-privacy): How Glapp handles consumer health data
- [Terms of use](https://glapp.io/terms-of-use): Legal terms governing use of glapp.io