Side by side.
| Feature | Pip Body Scan | Pep |
|---|---|---|
| Main job | Seeing your body change, with your treatment record | Tracking shots, food, weight and photos in one place |
| Shot log | Dose, unit, site, site reaction and a note. Shots, pills or creams | Shots or pills in one tap, with dose increases tracked |
| Injection sites | Shows your last site. Doesn’t suggest the next one | Site rotation that shows where the next shot goes |
| Estimated medication level chart | No | Yes |
| Side effects | Daily feeling, symptoms and appetite | Nausea, constipation, fatigue or your own, rated for severity, on a calendar with your doses |
| Food | Type or say a meal for protein and calorie estimates. No photos or barcodes | AI photo scanner, barcodes and a food database, with calorie, protein, fibre and water goals |
| Photos | Four guided photos a week, made into a 3D body | Progress photos side by side, and a shareable Progress Card |
| Measurements | Waist, body-fat range and fat-free mass range. All AI estimates | Weight and the body measurements you enter |
| Strength training | Log workouts in a few words, or bring them in from Apple Health | Pep Strength, a free companion app with short sessions planned around shot day |
| Backup | Kept on your iPhone and left out of backups. Export as a folder | Cloud backup when you sign in. Photos are encrypted on your phone first |
| Phones | iPhone only (iOS 17 or later) | iPhone, iPad and Android |
| Free to use | No free tier or trial. Your first scan is free to take; join to see your results | Free to download with core tracking. Pep Pro is optional |
| US App Store rating | Not on the App Store yet | 4.7 (955) |
Where they differ
Pep covers more of the day. It plans site rotation, tracks dose increases, estimates your medication level, reads meals from a photo and keeps your weight, measurements and photos together. It also links to a free strength-training app. Its core tracking is free, on iPhone, iPad and Android.
Pip Body Scan’s photos work differently. Instead of flat before-and-after pictures, it takes four guided photos and makes a 3D model you can turn to any angle, so two weeks can be compared from the same side. Pip checks each photo as you take it and asks for a retake if the light, pose or framing is off.
Two apps called Pep
Pep, by Shred Apps, and Pep AI, by Zode Development, are different apps from different companies. This page compares Pep (App Store ID 6504788281). On the UK App Store the same app is listed as “Mounjaro Tracker”.
Choose Pep or Pip Body Scan
- Choose Pep if
- you want one free app for shots, food photos, measurements and progress photos, with cloud backup, on iPhone, iPad or Android.
- Choose Pip Body Scan if
- you want a weekly 3D body you can turn and compare, next to your shots and symptoms, with no account, on an iPhone, once it launches.
Questions people ask.
Is Pep a peptide tracker?
Pep’s site and listing describe a GLP-1 tracker for medicines such as Ozempic, Wegovy, Mounjaro and Zepbound, plus compounded semaglutide, tirzepatide and retatrutide. If you run several peptides on different schedules, see our peptide tracker comparison.
Is Pep free?
Pep’s site says it’s free to download, with core tracking included. Pep Pro is an optional subscription that keeps every device you use in sync and adds more.
Where these facts come from.
Rival websites and App Store listings read on 26 October 2026. Ratings are from the US App Store, using Apple’s public lookup, on the date shown for each app. Features are what the developers advertise, not results from hands-on testing or an independent security or clinical assessment. Free and paid access can change; check the app before choosing.
- Pip Body Scan Pip Body Scan facts sheet, checked against the current iPhone build on 25 October 2026. How Pip estimates work
- Pep pepglp1.com home page and FAQ; App Store listing (“GLP-1 Weight Loss Tracker: Pep” in the US, “Mounjaro Tracker” in the UK). Website · App Store · Free download. Rating checked 26 October 2026.
Pip Body Scan is a personal progress-record tool. It does not provide medical advice, diagnose conditions or recommend treatment or doses. Body-fat and waist figures are AI estimates, not medical measurements. Speak to a qualified healthcare professional about medical concerns or changes to a treatment plan. Other app names are trademarks of their owners and are used here only to compare.