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  • Weight Trekker screenshot 1
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About Weight Trekker

WEIGHT TREKKER Built by drug experts, Weight Trekker is the most advanced app to track and predict your weight changes with Zepbound®, Mounjaro®, Wegovy®, or Ozempic®. Use our advanced, science-based, models to better understand your personal weight loss trajectory, side effects risks, and drug concentration levels. You can also compare your progress - all in one simple, free app. Key Benefits & Features: BUILT FOR REAL LIFE • Track your progress from Starting Weight → Goal Weight. • Monitor 4 key GI side effects and 3 Patient-Reported Outcomes (PROs). • Enter your data in under a minute each week - effortless and intuitive. ADVANCED INSIGHTS • Get personalized weight loss predictions powered by our advanced, science-based, prediction model. • Visualize how semaglutide or tirzepatide levels increase with repeated and higher dosing. • Understand your side-effect trends via our state-of-the-art graphics, predictions and summaries. JOIN THE WEIGHT TREKKER COMMUNITY • Everyone tracks the same way, so you can see how your results align with real-world data from other GLP-1 users. • Weight Changes - See how your weight loss journey compares to other GLP-1 users in the Weight Trekker community. • GI Side Effects - What GI side effects are most common among GLP-1 users? Are they rated as Mild, Moderate or Severe? How do they change over time? • Patient Reported Outcomes - Are other GLP-1 users rating their Weight Loss, Tolerability and Overall Satisfaction like you? Excellent? Poor? CUSTOMIZE TO YOUR PERSONAL REQUIREMENTS • Add optional notes and metrics like injection site, fatigue, calories, protein, and water intake. • Fully customizable dose levels. • Personalize your Table & Graph views for clearer insights. CHECK OUT OUR LATEST 5 STAR REVIEWS! • “Great Analytics and Graphs. Excited to see an app with predictive modeling being developed. Data entry is user friendly. Seeing the progression of the dosage concentration is helpful. As I entered portions of my data and played around with my data set, the app accurately predicted the progression of my weight loss.” GLP1_SavesLives: 01/03/2025 • “Invaluable. This is a great app which helps with identifying trends and increases motivation! Love it!” Yamit55: 01/23/2025 DOWNLOAD TODAY! Download today and join a community of Weight Trekker members looking to track and scientifically predict their weight loss journey with Zepbound®, Mounjaro®, Wegovy®, or Ozempic®. PHYSICAL HARM DISCLAIMER The information and data provided by this app are intended for personal weight, GI side effects and PRO tracking purposes. While our app offers predictions based on your data, these predictions are not a substitute for professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare professional before making any decisions related to your health or weight management. PRIVACY We value and respect your privacy. You can delete your account at any time via the “Delete Account” button in the Settings menu. This will completely delete all your data from our database. Privacy Policy: https://weighttrekker.com/privacy/ Terms of Use: https://weighttrekker.com/terms/

Ratings & reviews

4.3

28 ratings

5 ★ 71% 4 ★ 11% 3 ★ 4% 2 ★ 4% 1 ★ 11%

What’s new

Version 3.0.0 · Updated November 6, 2025

The Weight Trekker Community results have been analysed and incorporated into the app via both the Community and Simulate buttons. Further improvements to better support large font sizes and devices (e.g. fixed minor text rendering issues on iPad).

App privacy

The developer, Alan Maloney, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Health & Fitness: Health
  • Contact Info: Email Address, Name
  • Identifiers: User ID, Device ID
  • Sensitive Info: Sensitive Info
  • Diagnostics: Crash Data, Other Diagnostic Data

Used for: App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Diagnostics: Performance Data

Used for: App Functionality

Alternatives to Weight Trekker

Looking for apps like Weight Trekker? Here are 6 similar apps on the App Store. The highest rated is GLPeak: GLP-1 Shot Tracker (4.7/5), and all 6 are free to download.

Weight Trekker vs. alternatives
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Weight Trekker 4.3 / 5 (28 ratings) Free November 6, 2025
Loomie: GLP-1 Shot Tracker 4.1 / 5 (24) Free Jan 29, 2025 Compare
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Glippie 4.5 / 5 (2) Free Oct 12, 2026 Compare
GLP-1 Tracker 3.9 / 5 (7) Free Jul 9, 2025 Compare
Glia: GLP-1 Tracker & Dose Log 4.3 / 5 (27) Free Oct 6, 2026 Compare
GLPeak: GLP-1 Shot Tracker 4.7 / 5 (155) Free Sep 24, 2026 Compare

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